System Security Command Reference Guide for Cisco NCS 6000 Routers - Authentication, Authorization, and Accounting Commands [Cisco Network Convergence System 6000 Series Routers]

aaa accounting

To create a method list for accounting, use the aaa accounting command. To remove a list name from the system, use the no form of this command.

aaa accounting { commands | exec | network } { default | list-name } { start-stop | stop-only } { none | method }

no aaa accounting { commands | exec | network } { default | list-name }

Syntax Description

commands	Enables accounting for XR EXEC shell commands.
exec	Enables accounting of a XR EXEC session.
network	Enables accounting for all network-related service requests, such as Internet Key Exchange (IKE) and Point-to-Point Protocol (PPP).
event manager	Sets the authorization list for XR EXEC.

Command Default

AAA accounting is disabled.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the aaa accounting command to create default or named method lists defining specific accounting methods and that can be used on a per-line or per-interface basis. You can specify up to four methods in the method list. The list name can be applied to a line (console,, or vty template) to enable accounting on that particular line.

The Cisco IOS XR software supports both TACACS+ and RADIUS methods for accounting. The router reports user activity to the security server in the form of accounting records, which are stored on the security server.

Note

This command cannot be used with TACACS or extended TACACS.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to define a default commands accounting method list, where accounting services are provided by a TACACS+ security server, with a stop-only restriction:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa accounting commands default stop-only group tacacs+

Related Commands

Command	Description
aaa authorization (XR-VM)	Creates a method list for authorization.

aaa accounting system default

To enable authentication, authorization, and accounting (AAA) system accounting, use the aaa accounting system default command. To disable system accounting, use the no form of this command.

aaa accounting system default { start-stop | stop-only } { none | method }

no aaa accounting system default

Syntax Description

start-stop	Sends a “start accounting” notice during system bootup and a “stop accounting” notice during system shutdown or reload.
stop-only	Sends a “stop accounting” notice during system shutdown or reload.
none	Uses no accounting.
method	Method used to enable AAA system accounting. The value is one of the following options: group tacacs+—Uses the list of all TACACS+ servers for accounting. group radius—Uses the list of all RADIUS servers for accounting. group named-group—Uses a named subset of TACACS+ or RADIUS servers for accounting, as defined by the aaa group server tacacs+ or aaa group server radius command.

Command Default

AAA accounting is disabled.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

System accounting does not use named accounting lists; you can define only the default list for system accounting.

The default method list is automatically applied to all interfaces or lines. If no default method list is defined, then no accounting takes place.

You can specify up to four methods in the method list.

Task ID

Task ID	Operations
aaa	read, write

This example shows how to cause a “start accounting” record to be sent to a TACACS+ server when a router initially boots. A “stop accounting” record is also sent when a router is shut down or reloaded.

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa accounting system default start-stop group tacacs+

Related Commands

Command	Description
aaa authentication (XR-VM)	Creates a method list for authentication.
aaa authorization (XR-VM)	Creates a method list for authorization.

aaa accounting update

To enable periodic interim accounting records to be sent to the accounting server, use the aaa accounting update command. To disable the interim accounting updates, use the no form of this command.

aaa accounting update { newinfo | periodic minutes }

no aaa accounting update

Syntax Description

newinfo	(Optional) Sends an interim accounting record to the accounting server whenever there is new accounting information to report relating to the user in question.
periodic minutes	(Optional) Sends an interim accounting record to the accounting server periodically, as defined by the minutes argument, which is an integer that specifies the number of minutes. The range is from 1 to 35791394 minutes.

Command Default

AAA accounting update is disabled.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

If the newinfo keyword is used, interim accounting records are sent to the accounting server every time there is new accounting information to report. An example of this report would be when IP Control Protocol (IPCP) completes IP address negotiation with the remote peer. The interim accounting record includes the negotiated IP address used by the remote peer.

When used with the periodic keyword, interim accounting records are sent periodically as defined by the minutes argument. The interim accounting record contains all the accounting information recorded for that user up to the time the accounting record is sent.

When using both the newinfo and periodic keywords, interim accounting records are sent to the accounting server every time there is new accounting information to report, and accounting records are sent to the accounting server periodically as defined by the minutes argument. For example, if you configure the aaa accounting update command with the newinfo and periodic keywords, all users currently logged in continue to generate periodic interim accounting records while new users generate accounting records based on the newinfo algorithm.

Caution

Using the aaa accounting update command with the periodic keyword can cause heavy congestion when many users are logged into the network.

Both periodic and newinfo keywords are mutually exclusive; therefore, only one keyword can be configured at a time.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to send periodic interim accounting records to the RADIUS server at 30-minute intervals:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa accounting update periodic 30

The following example shows how to send interim accounting records to the RADIUS server when there is new accounting information to report:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa accounting update newinfo

Related Commands

Command	Description
aaa accounting	Creates a method list for accounting.
aaa authorization (XR-VM)	Creates a method list for authorization.

aaa authentication (XR-VM)

To create a method list for authentication, use the aaa authentication command. To disable this authentication method, use the no form of this command.

aaa authentication { login | ppp } { default | list-name | remote } method-list

no aaa authentication { login | ppp } { default | list-name | remote } method-list

Syntax Description

login

Sets authentication for login.

ppp

Sets authentication for Point-to-Point Protocol.

default

Uses the listed authentication methods that follow this keyword as the default list of methods for authentication.

list-name

Character string used to name the authentication method list.

remote

Uses the listed authentication methods that follow this keyword as the default list of methods for administrative authentication on a remote non-owner secure domain router. The remote keyword is used only with the login keyword and not with the ppp keyword.

Note

The remote keyword is available only on the administration plane.

method-list

Method used to enable AAA system accounting. The value is one of the following options:

group tacacs+—Specifies a method list that uses the list of all configured TACACS+ servers for authentication.
group radius—Specifies a method list that uses the list of all configured RADIUS servers for authentication.
group named-group —Specifies a method list that uses a named subset of TACACS+ or RADIUS servers for authentication, as defined by the aaa group server tacacs+ or aaa group server radius command.
local—Specifies a method list that uses the local username database method for authentication. AAA method rollover happens beyond the local method if username is not defined in the local group.
line—Specifies a method list that uses the line password for authentication.

Command Default

Default behavior applies the local authentication on all ports.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the aaa authentication command to create a series of authentication methods, or method list. You can specify up to four methods in the method list. A method list is a named list describing the authentication methods (such as TACACS+ or RADIUS) in sequence. The subsequent methods of authentication are used only if the initial method is not available, not if it fails.

The default method list is applied for all interfaces for authentication, except when a different named method list is explicitly specified—in which case the explicitly specified method list overrides the default list.

For console and vty access, if no authentication is configured, a default of local method is applied.

Note

The group tacacs+, group radius, and group group-name forms of this command refer to a set of previously defined TACACS+ or RADIUS servers.
Use the tacacs-server host or radius-server host command to configure the host servers.
Use the aaa group server tacacs+ or aaa group server radius command to create a named subset of servers.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to specify the default method list for authentication, and also enable authentication for console in XR config mode:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa authentication login default group tacacs+

Related Commands

Command	Description
aaa accounting	Creates a method list for accounting.
aaa authorization (XR-VM)	Creates a method list for authorization.
aaa group server radius	Groups different RADIUS server hosts into distinct lists and distinct methods.
aaa group server tacacs+	Groups different TACACS+ server hosts into distinct lists and distinct methods.
login authentication	Enables AAA authentication for logins.
tacacs-server host	Specifies a TACACS+ host.

aaa authorization (XR-VM)

To create a method list for authorization, use the aaa authorization command. To disable authorization for a function, use the no form of this command.

aaa authorization { commands | eventmanager | exec | network } { default | list-name } { none | local | group { tacacs | + | radius | group-name } }

no aaa authorization { commands | eventmanager | exec | network } { default | list-name }

Syntax Description

commands	Configures authorization for all XR EXEC shell commands.
eventmanager	Applies an authorization method for authorizing an event manager (fault manager).
exec	Configures authorization for an interactive (XR EXEC) session.
network	Configures authorization for network services, such as PPP or Internet Key Exchange (IKE).
default	Uses the listed authorization methods that follow this keyword as the default list of methods for authorization.
list-name	Character string used to name the list of authorization methods.
none	Uses no authorization. If you specify none, no subsequent authorization methods is attempted. However, the task ID authorization is always required and cannot be disabled.
local	Uses local authorization. This method of authorization is not available for command authorization.
group tacacs+	Uses the list of all configured TACACS+ servers for authorization.
group radius	Uses the list of all configured RADIUS servers for authorization. This method of authorization is not available for command authorization.
group group-name	Uses a named subset of TACACS+ or RADIUS servers for authorization as defined by the aaa group server tacacs+ or aaa group server radius command.

Command Default

Authorization is disabled for all actions (equivalent to the method none keyword).

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the aaa authorization command to create method lists defining specific authorization methods that can be used on a per-line or per-interface basis. You can specify up to four methods in the method list.

Note

The command authorization mentioned here applies to the one performed by an external AAA server and not for task-based authorization.

Method lists for authorization define the ways authorization will be performed and the sequence in which these methods will be performed. A method list is a named list describing the authorization methods (such as TACACS+), in sequence. Method lists enable you to designate one or more security protocols for authorization, thus ensuring a backup system in case the initial method fails. Cisco IOS XR software uses the first method listed to authorize users for specific network services; if that method fails to respond, Cisco IOS XR software selects the next method listed in the method list. This process continues until there is successful communication with a listed authorization method or until all methods defined have been exhausted.

Note

Cisco IOS XR software attempts authorization with the next listed method only when there is no response (not a failure) from the previous method. If authorization fails at any point in this cycle—meaning that the security server or local username database responds by denying the user services—the authorization process stops and no other authorization methods are attempted.

The Cisco IOS XR software supports the following methods for authorization:

none—The router does not request authorization information; authorization is not performed over this line or interface.
local—Use the local database for authorization.
group tacacs+—Use the list of all configured TACACS+ servers for authorization.
group radius—Use the list of all configured RADIUS servers for authorization.
group group-name—Uses a named subset of TACACS+ or RADIUS servers for authorization.

Method lists are specific to the type of authorization being requested. Cisco IOS XR software supports four types of AAA authorization:

Commands authorization—Applies to the XR EXEC mode commands a user issues. Command authorization attempts authorization for all XR EXEC mode commands.

Note

“Command” authorization is distinct from “task-based” authorization, which is based on the task profile established during authentication.
XR EXEC authorization—Applies authorization for starting an XR EXEC session.
Network authorization—Applies authorization for network services, such as IKE.
Event manager authorization—Applies an authorization method for authorizing an event manager (fault manager). You are allowed to use TACACS+ or locald.

When you create a named method list, you are defining a particular list of authorization methods for the indicated authorization type. When defined, method lists must be applied to specific lines or interfaces before any of the defined methods are performed.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to define the network authorization method list named listname1, which specifies that TACACS+ authorization is used:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa authorization commands listname1 group tacacs+

Related Commands

Command	Description
aaa accounting	Creates a method list for accounting.

aaa default-taskgroup

To specify a task group for both remote TACACS+ authentication and RADIUS authentication, use the aaa default-taskgroup command. To remove this default task group, enter the no form of this command.

aaa default-taskgroup taskgroup-name

no aaa default-taskgroup

Syntax Description

taskgroup-name

Name of an existing task group.

Command Default

No default task group is assigned for remote authentication.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the aaa default-taskgroup command to specify an existing task group for remote TACACS+ authentication.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to specify taskgroup1 as the default task group for remote TACACS+ authentication:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa default-taskgroup taskgroup1

aaa group server radius

To group different RADIUS server hosts into distinct lists, use the aaa group server radius command. To remove a group server from the configuration list, enter the no form of this command.

aaa group server radius group-name

no aaa group server radius group-name

Syntax Description

group-name

Character string used to name the group of servers.

Command Default

This command is not enabled.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the aaa group server radius command to group existing server hosts, which allows you to select a subset of the configured server hosts and use them for a particular service. A server group is used in conjunction with a global server-host list. The server group lists the IP addresses or hostnames of the selected server hosts.

Server groups can also include multiple host entries for the same server, as long as each entry has a unique identifier. The combination of an IP address and User Datagram Protocol (UDP) port number creates a unique identifier, allowing different ports to individually defined as RADIUS hosts providing a specific authentication, authorization, and accounting (AAA) service. In other words, this unique identifier enables RADIUS requests to be sent to different UDP ports on a server at the same IP address. If two different host entries on the same RADIUS server are configured for the same service, for example, accounting, the second host entry acts as an automatic switchover backup to the first host entry. Using this example, if the first host entry fails to provide accounting services, the network access server tries the second host entry on the same device for accounting services. The RADIUS host entries are tried in the order in which they are configured in the server group.

All members of a server group must be the same type, that is, RADIUS.

The server group cannot be named radius or tacacs.

This command enters server group configuration mode. You can use the server command to associate a particular RADIUS server with the defined server group.

Task ID

Task ID	Operations
aaa	read, write

The following example shows the configuration of an AAA group server named radgroup1, which comprises three member servers:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa group server radius radgroup1
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.0.0.5 auth-port 1700 acct-port 1701
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.0.0.10 auth-port 1702 acct-port 1703
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.0.0.20 auth-port 1705 acct-port 1706

Note

If the auth-port port-number and acct-port port-number keywords and arguments are not specified, the default value of the port-number argument for the auth-port keyword is 1645 and the default value of the port-number argument for the acct-port keyword is 1646.

Related Commands

Command	Description
key (RADIUS)	Specifies the authentication and encryption key that is used between the router and the RADIUS daemon running on the RADIUS server.
radius source-interface	Forces RADIUS to use the IP address of a specified interface or subinterface for all outgoing RADIUS packets.
retransmit (RADIUS)	Specifies the number of times a RADIUS request is resent to a server if the server is not responding or is responding slowly.
server (RADIUS)	Associates a RADIUS server with a defined server group.
server-private (RADIUS)	Configures the IP address of the private RADIUS server for the group server.
timeout (RADIUS)	Specifies the number of seconds the router waits for the RADIUS server to reply before retransmitting.
vrf (RADIUS)	Configures the Virtual Private Network (VPN) routing and forwarding (VRF) reference of an AAA RADIUS server group.

aaa group server tacacs+

To group different TACACS+ server hosts into distinct lists, use the aaa group server tacacs+ command. To remove a server group from the configuration list, enter the no form of this command.

aaa group server tacacs+ group-name

no aaa group server tacacs+ group-name

Syntax Description

group-name

Character string used to name a group of servers.

Command Default

This command is not enabled.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The AAA server-group feature introduces a way to group existing server hosts. The feature enables you to select a subset of the configured server hosts and use them for a particular service.

The aaa group server tacacs+ command enters server group configuration mode. The server command associates a particular TACACS+ server with the defined server group.

A server group is a list of server hosts of a particular type. The supported server host type is TACACS+ server hosts. A server group is used with a global server host list. The server group lists the IP addresses or hostnames of the selected server hosts.

The server group cannot be named radius or tacacs.

Note

Group name methods refer to a set of previously defined TACACS+ servers. Use the tacacs-server host command to configure the host servers.

Task ID

Task ID	Operations
aaa	read, write

The following example shows the configuration of an AAA group server named tacgroup1, which comprises three member servers:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa group server tacacs+ tacgroup1
RP/0/RP0/CPU0:router(config-sg-tacacs)# server 192.168.200.226
RP/0/RP0/CPU0:router(config-sg-tacacs)# server 192.168.200.227
RP/0/RP0/CPU0:router(config-sg-tacacs)# server 192.168.200.228

Related Commands

Command	Description
aaa accounting	Creates a method list for accounting.
aaa authentication (XR-VM)	Creates a method list for authentication.
aaa authorization (XR-VM)	Creates a method list for authorization.
server (TACACS+)	Specifies the host name or IP address of an external TACACS+ server.
tacacs-server host	Specifies a TACACS+ host.

accounting (line)

To enable authentication, authorization, and accounting (AAA) accounting services for a specific line or group of lines, use the accounting command. To disable AAA accounting services, use the no form of this command.

accounting { commands | exec } { default | list-name }

no accounting { commands | exec }

Syntax Description

commands	Enables accounting on the selected lines for all XR EXEC shell commands.
exec	Enables accounting of XR EXEC session.
default	The name of the default method list, created with the aaa accounting command.
list-name	Specifies the name of a list of accounting methods to use. The list is created with the aaa accounting command.

Command Default

Accounting is disabled.

Command Modes

Line template configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

After you enable the aaa accounting command and define a named accounting method list (or use the default method list) for a particular type of accounting, you must apply the defined lists to the appropriate lines for accounting services to take place. Use the accounting command to apply the specified method lists to the selected line or group of lines. If a method list is not specified this way, no accounting is applied to the selected line or group of lines.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to enable command accounting services using the accounting method list named listname2 on a line template named configure:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template configure
RP/0/RP0/CPU0:router(config-line)# accounting commands listname2

Related Commands

Command	Description
aaa accounting	Creates a method list for accounting.

authorization

To enable authentication, authorization, and accounting (AAA) authorization for a specific line or group of lines, use the authorization command in line template configuration mode. To disable authorization, use the no form of this command.

authorization { commands | exec } { default | list-name }

no authorization { commands | exec }

Syntax Description

commands	Enables authorization on the selected lines for all commands.
exec	Enables authorization for an interactive (EXEC) session.
default	Applies the default method list, created with the aaa authorization command.
list-name	Specifies the name of a list of authorization methods to use. If no list name is specified, the system uses the default. The list is created with the aaa authorization command.

Command Default

Authorization is not enabled.

Command Modes

Line template configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

After you use the aaa authorization command to define a named authorization method list (or use the default method list) for a particular type of authorization, you must apply the defined lists to the appropriate lines for authorization to take place. Use the authorization command to apply the specified method lists (or, if none is specified, the default method list) to the selected line or group of lines.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to enable command authorization using the method list named listname4 on a line template named configure:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template configure
RP/0/RP0/CPU0:router(config-line)# authorization commands listname4

Related Commands

Command	Description
aaa authorization (XR-VM)	Creates a method list for authorization.

deadtime (server-group configuration)

To configure the deadtime value at the RADIUS server group level, use the deadtime command in server-group configuration mode. To set deadtime to 0, use the no form of this command.

deadtime minutes

no deadtime

Syntax Description

minutes

Length of time, in minutes, for which a RADIUS server is skipped over by transaction requests, up to a maximum of 1440 (24 hours). The range is from 1 to 1440.

Command Default

Deadtime is set to 0.

Command Modes

Server-group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The value of the deadtime set in the server groups overrides the deadtime that is configured globally. If the deadtime is omitted from the server group configuration, the value is inherited from the master list. If the server group is not configured, the default value of 0 applies to all servers in the group. If the deadtime is set to 0, no servers are marked dead.

Task ID

Task ID	Operations
aaa	read, write

The following example specifies a one-minute deadtime for RADIUS server group group1 when it has failed to respond to authentication requests for the deadtime command:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa group server radius group1
RP/0/RP0/CPU0:router(config-sg-radius)# server 1.1.1.1 auth-port 1645 acct-port 1646
RP/0/RP0/CPU0:router(config-sg-radius)# server 2.2.2.2 auth-port 2000 acct-port 2001
RP/0/RP0/CPU0:router(config-sg-radius)# deadtime 1

Related Commands

Command	Description
aaa group server tacacs+	Groups different RADIUS server hosts into distinct lists and distinct methods.
radius-server dead-criteria time	Forces one or both of the criteria that is used to mark a RADIUS server as dead.
radius-server deadtime	Defines the length of time in minutes for a RADIUS server to remain marked dead.

description (AAA)

To create a description of a task group or user group during configuration, use the description command in task group configuration or user group configuration mode. To delete a task group description or user group description, use the no form of this command.

description string

no description

Syntax Description

string

Character string describing the task group or user group.

Command Default

None

Command Modes

Task group configuration

User group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the description command inside the task or user group configuration submode to define a description for the task or user group, respectively.

Task ID

Task ID	Operations
aaa	read, write

The following example shows the creation of a task group description:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# taskgroup alpha
RP/0/RP0/CPU0:router(config-tg)# description this is a sample taskgroup

The following example shows the creation of a user group description:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# usergroup alpha
RP/0/RP0/CPU0:router(config-ug)# description this is a sample user group

Related Commands

Command	Description
taskgroup	Accesses task group configuration mode and configures a task group by associating it with a set of task IDs.
usergroup	Accesses user group configuration mode and configures a user group by associating it with a set of task groups.

group (AAA)

To add a user to a group, use the group command in username configuration mode. To remove the user from a group, use the no form of this command.

group { root-system | root-lr | netadmin | sysadmin | operator | cisco-support | serviceadmin | group-name } no group { root-system | root-lr | netadmin | sysadmin | operator | cisco-support | serviceadmin | group-name }

Syntax Description

root-system	Adds the user to the predefined root-system group. Only users with root-system authority may use this option.
root-lr	Adds the user to the predefined root-lr group. Only users with root-system authority or root-lr authority may use this option.
netadmin	Adds the user to the predefined network administrators group.
sysadmin	Adds the user to the predefined system administrators group.
operator	Adds the user to the predefined operator group.
cisco-support	Adds the user to the predefined Cisco support personnel group.
serviceadmin	Adds the user to the predefined service administrators group.
group-name	Adds the user to a named user group that has already been defined with the usergroup command.

Command Default

None

Command Modes

Username configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The predefined group root-system may be specified only by root-system users while configuring administration.

Use the group command in username configuration mode. To access username configuration mode, use the username command in XR Config mode.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to assign the user group operator to the user named user1:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# username user1
RP/0/RP0/CPU0:router(config-un)# group operator

Related Commands

Command	Description
password (AAA)	Creates a login password for a user.
usergroup	Configures a user group and associates it with a set of task groups.
username	Accesses username configuration mode, configures a new user with a username, and establishes a password and permissions for that user.

inherit taskgroup

To enable a task group to derive permissions from another task group, use the inherit taskgroup command in task group configuration mode.

inherit taskgroup { taskgroup-name | netadmin | operator | sysadmin | cisco-support | root-lr | root-system | serviceadmin }

Syntax Description

taskgroup-name	Name of the task group from which permissions are inherited.
netadmin	Inherits permissions from the network administrator task group.
operator	Inherits permissions from the operator task group.
sysadmin	Inherits permissions from the system administrator task group.
cisco-support	Inherits permissions from the cisco support task group.
root-lr	Inherits permissions from the root-lr task group.
root-system	Inherits permissions from the root system task group.
serviceadmin	Inherits permissions from the service administrators task group.

Command Default

None

Command Modes

Task group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the inherit taskgroup command to inherit the permissions (task IDs) from one task group into another task group. Any changes made to the taskgroup from which they are inherited are reflected immediately in the group from which they are inherited.

Task ID

Task ID	Operations
aaa	read, write

In the following example, the permissions of task group tg2 are inherited by task group tg1:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# taskgroup tg1
RP/0/RP0/CPU0:router(config-tg)# inherit taskgroup tg2
RP/0/RP0/CPU0:router(config-tg)# end

inherit usergroup

To enable a user group to derive characteristics of another user group, use the inherit usergroup command in user group configuration mode.

inherit usergroup usergroup-name

Syntax Description

usergroup-name

Name of the user group from which permissions are to be inherited.

Command Default

None

Command Modes

User group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Each user group is associated with a set of task groups applicable to the users in that group. A task group is defined by a collection of task IDs. Task groups contain task ID lists for each class of action. The task permissions for a user are derived (at the start of the EXEC or XML session) from the task groups associated with the user groups to which that user belongs.

User groups support inheritance from other user groups. Use the inherit usergroup command to copy permissions (task ID attributes) from one user group to another user group. The “destination” user group inherits the properties of the inherited group and forms a union of all task IDs specified in those groups. For example, when user group A inherits user group B, the task map of the user group A is a union of that of A and B. Cyclic inclusions are detected and rejected. User groups cannot inherit properties from predefined groups, such as root-system users, root-sdr users, netadmin users, and so on. Any changes made to the usergroup from which it is inherited are reflected immediately in the group from which it is inherited.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to enable the purchasing user group to inherit properties from the sales user group:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# usergroup purchasing
RP/0/RP0/CPU0:router(config-ug)# inherit usergroup sales

Related Commands

Command	Description
description (AAA)	Creates a description of a task group in task group configuration mode, or creates a description of a user group in user group configuration mode.
taskgroup	Configures a task group to be associated with a set of task IDs.
usergroup	Configures a user group to be associated with a set of task groups.

key (TACACS+)

To specify an authentication and encryption key shared between the AAA server and the TACACS+ server, use the key (TACACS+) command in TACACS host configuration mode. To disable this feature, use the no form of this command.

key { 0 clear-text-key | 7 encrypted-key | auth-key }

no key { 0 clear-text-key | 7 encrypted-key | auth-key }

Syntax Description

0 clear-text-key	Specifies an unencrypted (cleartext) shared key.
7 encrypted-key	Specifies an encrypted shared key.
auth-key	Specifies the unencrypted key between the AAA server and the TACACS+ server.

Command Default

None

Command Modes

TACACS host configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The TACACS+ packets are encrypted using the key, and it must match the key used by the TACACS+ daemon. Specifying this key overrides the key set by the tacacs-server key command for this server only.

The key is used to encrypt the packets that are going from TACACS+, and it should match with the key configured on the external TACACS+ server so that the packets are decrypted properly. If a mismatch occurs, the result fails.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to set the encrypted key to anykey

RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226
RP/0/RP0/CPU0:router(config-tacacs-host)# key anykey

Related Commands

Command	Description
tacacs-server host	Specifies a TACACS+ host.
tacacs-server key	Globally sets the authentication encryption key used for all TACACS+ communications between the router and the TACACS+ daemon.

login authentication

To enable authentication, authorization, and accounting (AAA) authentication for logins, use the login authentication command in line template configuration mode. To return to the default authentication settings, use the no form of this command.

login authentication { default | list-name }

no login authentication

Syntax Description

default	Default list of AAA authentication methods, as set by the aaa authentication login command.
list-name	Name of the method list used for authenticating. You specify this list with the aaa authentication login command.

Command Default

This command uses the default set with the aaa authentication login command.

Command Modes

Line template configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The login authentication command is a per-line command used with AAA that specifies the name of a list of AAA authentication methods to try at login.

Caution

If you use a list-name value that was not configured with the aaa authentication login command, the configuration is rejected.

Entering the no form of the login authentication command has the same effect as entering the command with the default keyword.

Before issuing this command, create a list of authentication processes by using the aaa authentication login command.

Task ID

Task ID	Operations
aaa	read, write
tty-access	read, write

The following example shows that the default AAA authentication is used for the line template template1:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template template1
RP/0/RP0/CPU0:router(config-line)# login authentication default

The following example shows that the AAA authentication list called list1 is used for the line template template2:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template template2
RP/0/RP0/CPU0:router(config-line)# login authentication list1

Related Commands

Command	Description
aaa authentication (XR-VM)	Creates a method list for authentication.

password (AAA)

To create a login password for a user, use the password command in username configuration mode or line template configuration mode. To remove the password, use the no form of this command.

password { [0] | 7 password }

no password { 0 | 7 password }

Syntax Description

0

(Optional) Specifies that an unencrypted clear-text password follows.

7

Specifies that an encrypted password follows.

password

Specifies the unencrypted password text to be entered by the user to log in, for example, “lab”. If encryption is configured, the password is not visible to the user.

Can be up to 253 characters in length.

Command Default

The password is in unencrypted clear text.

Command Modes

Username configuration

Line template configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

You can specify one of two types of passwords: encrypted or clear text.

When an XR EXECprocess is started on a line that has password protection, the process prompts for the password. If the user enters the correct password, the process issues the prompt. The user can try three times to enter a password before the process exits and returns the terminal to the idle state.

Passwords are two-way encrypted and should be used for applications such as PPP that need decryptable passwords that can be decrypted.

Note

The show running-config command always displays the clear-text login password in encrypted form when the 0 option is used.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to establish the unencrypted password pwd1 for user. The output from the show command displays the password in its encrypted form.

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# username user1
RP/0/RP0/CPU0:router(config-un)# password 0 pwd1
RP/0/RP0/CPU0:router(config-un)# commit
RP/0/RP0/CPU0:router(config-un)# show running-config
Building configuration...
username user1
 password 7 141B1309

Related Commands

Command	Description
group (AAA)	Adds a user to a group.
usergroup	Accesses user group configuration mode and configures a user group, associating it with a set of task groups.
username	Accesses username configuration mode and configures a new user with a username, establishing a password and granting permissions for that user.
line	Enters line template configuration mode for the specified line template. For more information, see the Cisco IOS XR System Management Command Reference.

radius-server dead-criteria time

To specify the minimum amount of time, in seconds, that must elapse from the time that the router last received a valid packet from the RADIUS server to the time the server is marked as dead, use the radius-server dead-criteria time command in XR Config mode. To disable the criteria that were set, use the no form of this command.

radius-server dead-criteria time seconds

no radius-server dead-criteria time seconds

Syntax Description

seconds

Length of time, in seconds. The range is from 1 to120 seconds. If the seconds argument is not configured, the number of seconds ranges from 10 to 60, depending on the transaction rate of the server.

Note

The time criterion must be met for the server to be marked as dead.

Command Default

If the seconds argument is not configured, the number of seconds ranges from 10 to 60 seconds, depending on the transaction rate of the server.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Note

If you configure the radius-server dead-criteria time command before the radius-server deadtime command, the radius-server dead-criteria time command may not be enforced.

If a packet has not been received since the router booted and there is a timeout, the time criterion is treated as though it were met.

If the seconds argument is not indicated, the time is set to the defaults.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to establish the time for the dead-criteria conditions for a RADIUS server to be marked as dead for the radius-server dead-criteria time command:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server dead-criteria time 5

Related Commands

Command	Description
radius-server dead-criteria tries	Specifies the number of consecutive timeouts that must occur on the router before the RADIUS server is marked as dead.
radius-server deadtime	Defines the length of time, in minutes, for a RADIUS server to remain marked dead.
show radius dead-criteria	Displays information for the dead-server detection criteria.

radius-server dead-criteria tries

To specify the number of consecutive timeouts that must occur on the router before the RADIUS server is marked as dead, use the radius-server dead-criteria tries command. To disable the criteria that were set, use the no form of this command.

radius-server dead-criteria tries

no radius-server dead-criteria tries

Syntax Description

tries

Number of timeouts from 1 to 100. If the tries argument is not configured, the number of consecutive timeouts ranges from 10 to 100, depending on the transaction rate of the server and the number of configured retransmissions.

Note

The tries criterion must be met for the server to be marked as dead.

Command Default

If the tries argument is not configured, the number of consecutive timeouts ranges from 10 to 100, depending on the transaction rate of the server and the number of configured retransmissions.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

If the server performs both authentication and accounting, both types of packet are included in the number. Improperly constructed packets are counted as though they were timeouts. All transmissions, including the initial transmit and all retransmits, are counted.

Note

If you configure the radius-server dead-criteria tries command before the radius-server deadtime command, the radius-server dead-criteria tries command may not be enforced.

If the tries argument is not indicated, the number of tries is set to the default.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to establish the number of tries for the dead-criteria conditions for a RADIUS server to be marked as dead for the radius-server dead-criteria tries command:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server dead-criteria tries 4

Related Commands

Command	Description
radius-server dead-criteria time	Defines the length of time in seconds that must elapse from the time that the router last received a valid packet from the RADIUS server to the time the server is marked as dead.
radius-server deadtime	Defines the length of time, in minutes, for a RADIUS server to remain marked dead.
show radius dead-criteria	Displays information for the dead-server detection criteria.

radius-server deadtime

To improve RADIUS response times when some servers are unavailable and cause the unavailable servers to be skipped immediately, use the radius-server deadtime command. To set deadtime to 0, use the no form of this command.

radius-server deadtime value

no radius-server deadtime value

Syntax Description

value

Length of time, in minutes, for which a RADIUS server is skipped over by transaction requests, up to a maximum of 1440 (24 hours). The range is from 1 to 1440. The default value is 0.

Command Default

Dead time is set to 0.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

A RADIUS server marked as dead is skipped by additional requests for the duration of minutes unless all other servers are marked dead and there is no rollover method.

Task ID

Task ID	Operations
aaa	read, write

This example specifies five minutes of deadtime for RADIUS servers that fail to respond to authentication requests for the radius-server deadtime command:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server deadtime 5

radius-server key

To set the authentication and encryption key for all RADIUS communications between the router and the RADIUS daemon, use the radius-server key command. To disable the key, use the no form of this command.

radius-server key { 0 clear-text-key | 7 encrypted-key | clear-text-key }

no radius-server key

Syntax Description

0 clear-text-key	Specifies an unencrypted (cleartext) shared key.
7 encrypted-key	Specifies a encrypted shared key.
clear-text-key	Specifies an unencrypted (cleartext) shared key.

Command Default

The authentication and encryption key is disabled.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The key entered must match the key used on the RADIUS server. All leading spaces are ignored, but spaces within and at the end of the key are used. If you use spaces in your key, do not enclose the key in quotation marks unless the quotation marks themselves are part of the key.

Task ID

Task ID	Operations
aaa	read, write

This example shows how to set the cleartext key to “samplekey”

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server key 0 samplekey

This example shows how to set the encrypted shared key to “anykey”

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server key 7 anykey

radius-server retransmit

To specify the number of times the Cisco IOS XR software retransmits a packet to a server before giving up, use the radius-server retransmit command. To disable retransmission, use the no form of this command.

radius-server retransmit retries

no radius-server retransmit

Syntax Description

retries

Maximum number of retransmission attempts. The range is from 1 to 100. Default is 3.

Command Default

The RADIUS servers are retried three times, or until a response is received.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The RADIUS client tries all servers, allowing each one to time out before increasing the retransmit count.

Task ID

Task ID	Operations
aaa	read, write

This example shows how to specify a retransmit counter value of five times:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# radius-server retransmit 5

Related Commands

Command	Description
radius-server key	Sets the authentication and encryption key for all RADIUS communications between the router and the RADIUS daemon.

radius-server timeout

To set the interval for which a router waits for a server host to reply before timing out, use the radius-server timeout command. To restore the default, use the no form of this command.

radius-server timeout seconds

no radius-server timeout

Syntax Description

seconds

Number that specifies the timeout interval, in seconds. Range is from 1 to 1000.

Command Default

The default radius-server timeout value is 5 seconds.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the radius-server timeout command to set the number of seconds a router waits for a server host to reply before timing out.

Task ID

Task ID	Operations
aaa	read, write

This example shows how to change the interval timer to 10 seconds:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# radius-server timeout 10

radius source-interface

To force RADIUS to use the IP address of a specified interface or subinterface for all outgoing RADIUS packets, use the radius source-interface command. To prevent only the specified interface from being the default and not from being used for all outgoing RADIUS packets, use the no form of this command.

radius source-interface interface [ vrf vrf_name ]

no radius source-interface interface

Syntax Description

interface-name	Name of the interface that RADIUS uses for all of its outgoing packets.
vrf vrf-id	Specifies the name of the assigned VRF.

Command Default

If a specific source interface is not configured, or the interface is down or does not have an IP address configured, the system selects an IP address.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the radius source-interface command to set the IP address of the specified interface or subinterface for all outgoing RADIUS packets. This address is used as long as the interface or subinterface is in the up state. In this way, the RADIUS server can use one IP address entry for every network access client instead of maintaining a list of IP addresses.

The specified interface or subinterface must have an IP address associated with it. If the specified interface or subinterface does not have an IP address or is in the down state, then RADIUS reverts to the default. To avoid this, add an IP address to the interface or subinterface or bring the interface to the up state.

The radius source-interface command is especially useful in cases in which the router has many interfaces or subinterfaces and you want to ensure that all RADIUS packets from a particular router have the same IP address.

Task ID

Task ID	Operations
aaa	read, write

This example shows how to make RADIUS use the IP address of subinterface s2 for all outgoing RADIUS packets:

RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius source-interface Loopback 10 vrf -

secret

To configure an MD5-encrypted secret to be associated with an encrypted username, use the secret command in username configuration mode or line template configuration mode. To remove the secure secret, use the no form of this command.

secret { [0] secret-login | 5 secret-login }

no secret { 0 | 5 } secret-login

Syntax Description

0

(Optional) Specifies that an unencrypted (clear-text) password follows. The password will be encrypted for storage in the configuration using an MD5 encryption algorithm. Otherwise, the password is not encrypted.

5

Specifies that an encrypted MD5 password (secret) follows.

secret-login

Text string in alphanumeric characters that is stored as the MD5-encrypted password entered by the user in association with the user’s login ID.

Can be up to 253 characters in length.

Note

The characters entered must conform to MD5 encryption standards.

Command Default

No password is specified.

Command Modes

Username configuration

Line template configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Cisco IOS XR software allows you to configure Message Digest 5 (MD5) encryption for username logins and passwords. MD5 encryption is a one-way hash function that makes reversal of an encrypted password impossible, providing strong encryption protection. Using MD5 encryption, you cannot retrieve clear-text passwords. Therefore, MD5 encrypted passwords cannot be used with protocols that require the clear-text password to be retrievable, such as Challenge Handshake Authentication Protocol (CHAP).

You can specify one of two types of secure secret IDs: encrypted (5) or clear text (0). If you do not select either 0 or 5, the clear-text password you enter is not be encrypted.

When an XR EXEC process is started on a line that has password protection, the process prompts for the secret. If the user enters the correct secret, the process issues the prompt. The user can try entering the secret thrice before the terminal returns to the idle state.

Secrets are one-way encrypted and should be used for login activities that do not require a decryptable secret.

To verify that MD5 password encryption has been enabled, use the show running-config command. If the “username name secret 5” line appears in the command output, enhanced password security is enabled.

Note

The show running-config command does not display the login password in clear text when the 0 option is used to specify an unencrypted password. See the “Examples” section.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to establish the clear-text secret “lab” for the user user2:

RP/0//CPU0:router# configure 
RP/0//CPU0:router(config)# username user2   
RP/0//CPU0:router(config-un)# secret 0 lab   
RP/0//CPU0:router(config-un)# commit 
RP/0//CPU0:router(config-un)# show running-config 
Building configuration...
username user2
 secret 5 $1$DTmd$q7C6fhzje7Cc7Xzmu2Frx1
!
end

Related Commands

Command	Description
group (AAA)	Adds a user to a group.
password (AAA)	Creates a login password for a user.
usergroup	Accesses user group configuration mode and configures a user group, associating it with a set of task groups.
username	Accesses username configuration mode and configures a new user with a username, establishing a password and granting permissions for that user.

server (RADIUS)

To associate a particular RADIUS server with a defined server group, use the server command in RADIUS server-group configuration mode. To remove the associated server from the server group, use the no form of this command.

server ip-address [ auth-port port-number ] [ acct-port port-number ]

no server ip-address [ auth-port port-number ] [ acct-port port-number ]

Syntax Description

ip-address	IP address of the RADIUS server host.
auth-port port-number	(Optional) Specifies the User Datagram Protocol (UDP) destination port for authentication requests. The port-number argument specifies the port number for authentication requests. The host is not used for authentication if this value is set to 0. Default is 1645.
acct-port port-number	(Optional) Specifies the UDP destination port for accounting requests. The port-number argument specifies the port number for accounting requests. The host is not used for accounting services if this value is set to 0. Default is 1646.

Command Default

If no port attributes are defined, the defaults are as follows:

Authentication port: 1645
Accounting port: 1646

Command Modes

RADIUS server-group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the server command to associate a particular RADIUS server with a defined server group.

There are two different ways in which you can identify a server, depending on the way you want to offer AAA services. You can identify the server simply by using its IP address, or you can identify multiple host instances or entries using the optional auth-port and acct-port keywords.

When you use the optional keywords, the network access server identifies RADIUS security servers and host instances associated with a group server based on their IP address and specific UDP port numbers. The combination of the IP address and UDP port number creates a unique identifier, allowing different ports to be individually defined as RADIUS host entries providing a specific AAA service. If two different host entries on the same RADIUS server are configured for the same service, for example, accounting, the second host entry configured acts as an automatic switchover backup to the first one. Using this example, if the first host entry fails to provide accounting services, the network access server tries the second host entry configured on the same device for accounting services. (The RADIUS host entries are tried in the order they are configured.)

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to use two different host entries on the same RADIUS server that are configured for the same services—authentication and accounting. The second host entry configured acts as switchover backup to the first one.

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server radius group1 
RP/0/RP0/CPU0:router(config-sg-radius)# server 1.1.1.1 auth-port 1645 acct-port 1646 
RP/0/RP0/CPU0:router(config-sg-radius)# server 2.2.2.2 auth-port 2000 acct-port 2001

Related Commands

Command	Description
aaa group server radius	Groups different RADIUS server hosts into distinct lists and distinct methods.
deadtime (server-group configuration)	Configures the deadtime value at the RADIUS server group level.
server-private (RADIUS)	Configures the IP address of the private RADIUS server for the group server.

server (TACACS+)

To associate a particular TACACS+ server with a defined server group, use the server command in TACACS+ server-group configuration mode. To remove the associated server from the server group, use the no form of this command.

server { hostname | ip-address }

no server { hostname | ip-address }

Syntax Description

hostname	Character string used to name the server host.
ip-address	IP address of the server host.

Command Default

None

Command Modes

TACACS+ server-group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The server need not be accessible during configuration. Later, you can reference the configured server group from the method lists used to configure authentication, authorization, and accounting (AAA).

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to associate the TACACS+ server with the IP address 192.168.60.15 with the server group tac1:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server tacacs+ tac1 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server 192.168.60.15

Related Commands

Command	Description
aaa group server tacacs+	Groups different TACACS+ server hosts into distinct lists.

server-private (RADIUS)

To configure the IP address of the private RADIUS server for the group server, use the server-private command in RADIUS server-group configuration mode. To remove the associated private server from the AAA group server, use the no form of this command

server-private ip-address [ auth-port port-number ] [ acct-port port-number ] [ timeout seconds ] [ retransmit retries ] [ key string ]

no server-private ip-address [ auth-port port-number ] [ acct-port port-number ]

Syntax Description

ip-address	IP address of the RADIUS server host.
auth-port port-number	(Optional) Specifies the User Datagram Protocol (UDP) destination port for authentication requests. The port-number argument specifies the port number for authentication requests. The host is not used for authentication if this value is set to 0. The default value is 1645.
acct-port port-number	(Optional) Specifies the UDP destination port for accounting requests. The port-number argument specifies the port number for accounting requests. The host is not used for accounting services if this value is set to 0. The default value is 1646.
timeout seconds	(Optional) Specifies the number of seconds the router waits for the RADIUS server to reply before retransmitting. The setting overrides the global value of the radius-server timeout command. If no timeout is specified, the global value is used. The seconds argument specifies the timeout value in seconds. The range is from 1 to 1000. If no timeout is specified, the global value is used.
retransmit retries	(Optional) Specifies the number of times a RADIUS request is resent to a server if the server is not responding or is responding slowly. The setting overrides the global setting of the radius-server transmit command. The retries argument specifies the retransmit value. The range is from 1 to 100. If no retransmit value is specified, the global value is used.
key string	(Optional) Specifies the authentication and encryption key that is used between the router and the RADIUS daemon running on the RADIUS server. This key overrides the global setting of the radius-server key command. If no key string is specified, the global value is used.

Command Default

If no port attributes are defined, the defaults are as follows:

Authentication port: 1645
Accounting port: 1646

Command Modes

RADIUS server-group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the server-private command to associate a particular private server with a defined server group. Possible overlapping of IP addresses between VRF instances are permitted. Private servers (servers with private addresses) can be defined within the server group and remain hidden from other groups, while the servers in the global pool (for example, default radius server group) can still be referred to by IP addresses and port numbers. Thus, the list of servers in server groups includes references to the hosts in the configuration and the definitions of private servers.

Both the auth-port and acct-port keywords enter RADIUS server-group private configuration mode.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to define the group1 RADIUS group server, to associate private servers with it, and to enter RADIUS server-group private configuration mode:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server radius group1 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 timeout 5 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 retransmit 3 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 key coke 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 auth-port 300 
RP/0/RP0/CPU0:router(config-sg-radius-private)# exit 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 timeout 5 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 retransmit 3 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 key coke 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 auth-port 300 
RP/0/RP0/CPU0:router(config-sg-radius-private)#

Related Commands

Command	Description
aaa group server tacacs+	Groups different RADIUS server hosts into distinct lists and distinct methods.
radius-server key	Sets the authentication and encryption key for all RADIUS communication between the router and the RADIUS daemon.
radius-server retransmit	Specifies the number of times the Cisco IOS XR software retransmits a packet to a server before giving up.
radius-server timeout	Sets the interval for which a router waits for a server host to reply before timing out.
key (RADIUS)	Specifies the authentication and encryption key that is used between the router and the RADIUS daemon running on the RADIUS server.
retransmit (RADIUS)	Specifies the number of times a RADIUS request is resent to a server if the server is not responding or is responding slowly.
timeout (RADIUS)	Specifies the number of seconds the router waits for the RADIUS server to reply before retransmitting.
vrf (RADIUS)	Configures the Virtual Private Network (VPN) routing and forwarding (VRF) reference of an AAA RADIUS server group.

show aaa (XR-VM)

To display information about an Internet Key Exchange (IKE) Security Protocol group, user group, local user, login traces, or task group; to list all task IDs associated with all IKE groups, user groups, local users, or task groups in the system; or to list all task IDs for a specified IKE group, user group, local user, or task group, use the show aaa command.

show aaa { ikegroup ikegroup-name | login trace | usergroup [usergroup-name] | trace | userdb [username] | task supported | taskgroup [ root-lr | netadmin | operator | sysadmin | root-system | service-admin | cisco-support | askgroup-name ] }

Syntax Description

ikegroup

Displays details for all IKE groups.

ikegroup-name

(Optional) IKE group whose details are to be displayed.

login trace

Displays trace data for login subsystem.

usergroup

Displays details for all user groups.

root-lr

(Optional) Usergroup name.

netadmin

(Optional) Usergroup name.

operator

(Optional) Usergroup name.

sysadmin

(Optional) Usergroup name.

root-system

(Optional) Usergroup name.

cisco-support

(Optional) Usergroup name.

usergroup-name

(Optional) Usergroup name.

trace

Displays trace data for AAA subsystem.

userdb

Displays details for all local users and the usergroups to which each user belongs.

username

(Optional) User whose details are to be displayed.

task supported

Displays all AAA task IDs available.

taskgroup

Displays details for all task groups.

Note

For taskgroup keywords, see optional usergroup name keyword list.

taskgroup-name

(Optional) Task group whose details are to be displayed.

Command Default

Details for all user groups, or all local users, or all task groups are listed if no argument is entered.

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show aaa command to list details for all IKE groups, user groups, local users, or task groups in the system. Use the optional ikegroup-name, usergroup-name, username, or taskgroup-name argument to display the details for a specified IKE group, user group, user, or task group, respectively.

Task ID

Task ID	Operations
aaa	read

The following sample output is from the show aaa command, using the ikegroup keyword:

RP/0/RP0/CPU0:router# show aaa ikegroup

IKE Group ike-group
        Max-Users = 50
IKE Group ikeuser
        Group-Key = test-password
        Default Domain = cisco.com
IKE Group ike-user

The following sample output is from the show aaa command, using the usergroup command:

RP/0/RP0/CPU0:router# show aaa usergroup operator

User group 'operator'
  Inherits from task group 'operator'
User group 'operator' has the following combined set
of task IDs (including all inherited groups):
Task:       basic-services  : READ    WRITE    EXECUTE DEBUG
Task:                  cdp  : READ
Task:                 diag  : READ
Task:           ext-access  : READ             EXECUTE
Task:              logging  : READ

The following sample output is from the show aaa command, using the taskgroup keyword for a task group named netadmin:

RP/0/RP0/CPU0:router# show aaa taskgroup netadmin

Task group 'netadmin'

Task group 'netadmin' has the following combined set
  of task IDs (including all inherited groups):

Task:                  aaa  : READ                             
Task:                  acl  : READ    WRITE    EXECUTE    DEBUG
Task:                admin  : READ                             
Task:                 ancp  : READ    WRITE    EXECUTE    DEBUG
Task:                  atm  : READ    WRITE    EXECUTE    DEBUG
Task:       basic-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 bcdl  : READ                             
Task:                  bfd  : READ    WRITE    EXECUTE    DEBUG
Task:                  bgp  : READ    WRITE    EXECUTE    DEBUG
Task:                 boot  : READ    WRITE    EXECUTE    DEBUG
Task:               bundle  : READ    WRITE    EXECUTE    DEBUG
Task:                  cdp  : READ    WRITE    EXECUTE    DEBUG
Task:                  cef  : READ    WRITE    EXECUTE    DEBUG
Task:                  cgn  : READ    WRITE    EXECUTE    DEBUG
Task:          config-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:      config-services  : READ    WRITE    EXECUTE    DEBUG
Task:               crypto  : READ    WRITE    EXECUTE    DEBUG
Task:                 diag  : READ    WRITE    EXECUTE    DEBUG
Task:              drivers  : READ                             
Task:                 dwdm  : READ    WRITE    EXECUTE    DEBUG
Task:                  eem  : READ    WRITE    EXECUTE    DEBUG
Task:                eigrp  : READ    WRITE    EXECUTE    DEBUG
Task:    ethernet-services  : READ                             
Task:           ext-access  : READ    WRITE    EXECUTE    DEBUG
Task:               fabric  : READ    WRITE    EXECUTE    DEBUG
Task:            fault-mgr  : READ    WRITE    EXECUTE    DEBUG
Task:           filesystem  : READ    WRITE    EXECUTE    DEBUG
Task:             firewall  : READ    WRITE    EXECUTE    DEBUG
Task:                   fr  : READ    WRITE    EXECUTE    DEBUG
Task:                 hdlc  : READ    WRITE    EXECUTE    DEBUG
Task:        host-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 hsrp  : READ    WRITE    EXECUTE    DEBUG
Task:            interface  : READ    WRITE    EXECUTE    DEBUG
Task:            inventory  : READ                             
Task:          ip-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv4  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv6  : READ    WRITE    EXECUTE    DEBUG
Task:                 isis  : READ    WRITE    EXECUTE    DEBUG
Task:                l2vpn  : READ    WRITE    EXECUTE    DEBUG
Task:                   li  : READ    WRITE    EXECUTE    DEBUG
Task:              logging  : READ    WRITE    EXECUTE    DEBUG
Task:                 lpts  : READ    WRITE    EXECUTE    DEBUG
Task:              monitor  : READ                             
Task:             mpls-ldp  : READ    WRITE    EXECUTE    DEBUG
Task:          mpls-static  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-te  : READ    WRITE    EXECUTE    DEBUG
Task:            multicast  : READ    WRITE    EXECUTE    DEBUG
Task:              netflow  : READ    WRITE    EXECUTE    DEBUG
Task:              network  : READ    WRITE    EXECUTE    DEBUG
Task:                 ospf  : READ    WRITE    EXECUTE    DEBUG
Task:                 ouni  : READ    WRITE    EXECUTE    DEBUG
Task:             pkg-mgmt  : READ                             
Task:              pos-dpt  : READ    WRITE    EXECUTE    DEBUG
Task:                  ppp  : READ    WRITE    EXECUTE    DEBUG
Task:                  qos  : READ    WRITE    EXECUTE    DEBUG
Task:                  rib  : READ    WRITE    EXECUTE    DEBUG
Task:                  rip  : READ    WRITE    EXECUTE    DEBUG
Task:              root-lr  : READ                              (reserved)
Task:            route-map  : READ    WRITE    EXECUTE    DEBUG
Task:         route-policy  : READ    WRITE    EXECUTE    DEBUG
Task:                  sbc  : READ    WRITE    EXECUTE    DEBUG
Task:                 snmp  : READ    WRITE    EXECUTE    DEBUG
Task:            sonet-sdh  : READ    WRITE    EXECUTE    DEBUG
Task:               static  : READ    WRITE    EXECUTE    DEBUG
Task:               sysmgr  : READ                             
Task:               system  : READ    WRITE    EXECUTE    DEBUG
Task:            transport  : READ    WRITE    EXECUTE    DEBUG
Task:           tty-access  : READ    WRITE    EXECUTE    DEBUG
Task:               tunnel  : READ    WRITE    EXECUTE    DEBUG
Task:            universal  : READ                              (reserved)
Task:                 vlan  : READ    WRITE    EXECUTE    DEBUG
Task:                 vrrp  : READ    WRITE    EXECUTE    DEBUG

The following sample output is from the show aaa command, using the taskgroup keyword for an operator. The task group operator has the following combined set of task IDs, which includes all inherited groups:

Task:       basic-services  : READ    WRITE    EXECUTE    DEBUG
Task:                  cdp  : READ                              
Task:                 diag  : READ                              
Task:           ext-access  : READ             EXECUTE          
Task:              logging  : READ

The following sample output is from the show aaa command, using the taskgroup keyword for a root system. The task-group root system has the following combined set of task IDs, which includes all inherited groups:

Task:                  aaa  : READ    WRITE    EXECUTE    DEBUG
Task:                  acl  : READ    WRITE    EXECUTE    DEBUG
Task:               admin  : READ    WRITE    EXECUTE    DEBUG
Task:                  atm  : READ    WRITE    EXECUTE    DEBUG
Task:       basic-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 bcdl  : READ    WRITE    EXECUTE    DEBUG
Task:                  bfd  : READ    WRITE    EXECUTE    DEBUG
Task:                  bgp  : READ    WRITE    EXECUTE    DEBUG
Task:                 boot  : READ    WRITE    EXECUTE    DEBUG
Task:               bundle  : READ    WRITE    EXECUTE    DEBUG
Task:                  cdp  : READ    WRITE    EXECUTE    DEBUG
Task:                  cef  : READ    WRITE    EXECUTE    DEBUG
Task:         config-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:          config-services  : READ    WRITE    EXECUTE    DEBUG
Task:               crypto  : READ    WRITE    EXECUTE    DEBUG
Task:                 diag  : READ    WRITE    EXECUTE    DEBUG
Task:              drivers  : READ    WRITE    EXECUTE    DEBUG
Task:           ext-access  : READ    WRITE    EXECUTE    DEBUG
Task:               fabric  : READ    WRITE    EXECUTE    DEBUG
Task:            fault-mgr  : READ    WRITE    EXECUTE    DEBUG
Task:           filesystem  : READ    WRITE    EXECUTE    DEBUG
Task:                   fr  : READ    WRITE    EXECUTE    DEBUG
Task:                 hdlc  : READ    WRITE    EXECUTE    DEBUG
Task:        host-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 hsrp  : READ    WRITE    EXECUTE    DEBUG
Task:            interface  : READ    WRITE    EXECUTE    DEBUG
Task:            inventory  : READ    WRITE    EXECUTE    DEBUG
Task:         ip-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv4  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv6  : READ    WRITE    EXECUTE    DEBUG
Task:                 isis  : READ    WRITE    EXECUTE    DEBUG
Task:              logging  : READ    WRITE    EXECUTE    DEBUG
Task:                 lpts  : READ    WRITE    EXECUTE    DEBUG
Task:              monitor  : READ    WRITE    EXECUTE    DEBUG
Task:             mpls-ldp  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-static  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-te  : READ    WRITE    EXECUTE    DEBUG
Task:           multicast  : READ    WRITE    EXECUTE    DEBUG
Task:              netflow  : READ    WRITE    EXECUTE    DEBUG
Task:              network  : READ    WRITE    EXECUTE    DEBUG
Task:                 ospf  : READ    WRITE    EXECUTE    DEBUG
Task:                 ouni  : READ    WRITE    EXECUTE    DEBUG
Task:             pkg-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:              pos-dpt  : READ    WRITE    EXECUTE    DEBUG
Task:                  ppp  : READ    WRITE    EXECUTE    DEBUG
Task:                  qos  : READ    WRITE    EXECUTE    DEBUG
Task:                  rib  : READ    WRITE    EXECUTE    DEBUG
Task:                  rip  : READ    WRITE    EXECUTE    DEBUG
Task:              root-lr  : READ    WRITE    EXECUTE    DEBUG
Task:          root-system  : READ    WRITE    EXECUTE    DEBUG
Task:            route-map  : READ    WRITE    EXECUTE    DEBUG
Task:         route-policy  : READ    WRITE    EXECUTE    DEBUG
Task:                 snmp  : READ    WRITE    EXECUTE    DEBUG
Task:            sonet-sdh  : READ    WRITE    EXECUTE    DEBUG
Task:               static  : READ    WRITE    EXECUTE    DEBUG
Task:               sysmgr  : READ    WRITE    EXECUTE    DEBUG
Task:               system  : READ    WRITE    EXECUTE    DEBUG
Task:            transport  : READ    WRITE    EXECUTE    DEBUG
Task:           tty-access  : READ    WRITE    EXECUTE    DEBUG
Task:               tunnel  : READ    WRITE    EXECUTE    DEBUG
Task:            universal  : READ    WRITE    EXECUTE    DEBUG
Task:                 vlan  : READ    WRITE    EXECUTE    DEBUG
Task:                 vrrp  : READ    WRITE    EXECUTE    DEBUG

The following sample output is from show aaa command with the userdb keyword:

RP/0/RP0/CPU0:router# show aaa userdb

Username lab (admin plane)
User group root-system
User group cisco-support
Username acme
User group root-system

The following sample output is from the show aaa command, using the task supported keywords. Task IDs are displayed in alphabetic order.

RP/0/RP0/CPU0:router# show aaa task supported

aaa
acl
admin
atm
basic-services
bcdl
bfd
bgp
boot
bundle
cdp
cef
cisco-support
config-mgmt
config-services
crypto
diag
disallowed
drivers
eigrp
ext-access
fabric
fault-mgr
filesystem
firewall
fr
hdlc
host-services
hsrp
interface
inventory
ip-services
ipv4
ipv6
isis
logging
lpts
monitor
mpls-ldp
mpls-static
mpls-te
multicast
netflow
network
ospf
ouni
pkg-mgmt
pos-dpt
ppp
qos
rib
rip
root-
root-system
route-map
route-policy
sbc
snmp
sonet-sdh
static
sysmgr
system
transport
tty-access
tunnel
universal
vlan
vrrp

Related Commands

Command	Description
show user	Displays task IDs enabled for the currently logged-in user.

show radius

To display information about the RADIUS servers that are configured in the system, use the show radius command.

show radius

Syntax Description

This command has no keywords or arguments.

Command Default

If no radius servers are configured, no output is displayed.

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show radius command to display statistics for each configured RADIUS server.

Task ID

Task ID	Operations
aaa	read

The following sample output is for the show radius command:

RP/0/RP0/CPU0:router# show radius

Global dead time: 0 minute(s)

Server: 1.1.1.1/1645/1646  is UP
  Timeout: 5 sec, Retransmit limit: 3
  Authentication:
    0 requests, 0 pending, 0 retransmits
    0 accepts, 0 rejects, 0 challenges
    0 timeouts, 0 bad responses, 0 bad authenticators
    0 unknown types, 0 dropped, 0 ms latest rtt
  Accounting:
    0 requests, 0 pending, 0 retransmits
    0 responses, 0 timeouts, 0 bad responses
    0 bad authenticators, 0 unknown types, 0 dropped
    0 ms latest rtt

Server: 2.2.2.2/1645/1646  is UP
  Timeout: 10 sec, Retransmit limit: 3
  Authentication:
    0 requests, 0 pending, 0 retransmits
    0 accepts, 0 rejects, 0 challenges
    0 timeouts, 0 bad responses, 0 bad authenticators
    0 unknown types, 0 dropped, 0 ms latest rtt
  Accounting:
    0 requests, 0 pending, 0 retransmits
    0 responses, 0 timeouts, 0 bad responses
    0 bad authenticators, 0 unknown types, 0 dropped
    0 ms latest rtt

This table describes the significant fields shown in the display.

Table 1 show radius Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests/UDP destination port for accounting requests.
Timeout	Number of seconds the router waits for a server host to reply before timing out.
Retransmit limit	Number of times the Cisco IOS XR software searches the list of RADIUS server hosts before giving up.

Related Commands

Command	Description
vrf (RADIUS)	Configures the Virtual Private Network (VPN) routing and forwarding (VRF) reference of an AAA RADIUS server group.
radius-server retransmit	Specifies how many times Cisco IOS XR software searches the list of RADIUS server hosts before giving up.
radius-server timeout	Sets the interval for which a router waits for a server host to reply.

show radius accounting

To obtain information and detailed statistics for the RADIUS accounting server and port, use the show radius accounting command in EXEC mode.

show radius accounting

Syntax Description

This command has no keywords or arguments.

Command Default

If no RADIUS servers are configured on the router, the output is empty. If the default values are for the counter (for example, request and pending), the values are all zero because the RADIUS server was just defined and not used yet.

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID

Task ID	Operations
aaa	read

The following sample output is displayed on a per-server basis for the show radius accounting command:

RP/0/RP0/CPU0:router# show radius accounting

Server: 12.26.25.61, port: 1813
0 requests, 0 pending, 0 retransmits
0 responses, 0 timeouts, 0 bad responses
0 bad authenticators, 0 unknown types, 0 dropped
0 ms latest rtt

Server: 12.26.49.12, port: 1813
0 requests, 0 pending, 0 retransmits
0 responses, 0 timeouts, 0 bad responses
0 bad authenticators, 0 unknown types, 0 dropped
0 ms latest rtt

Server: 12.38.28.18, port: 29199
0 requests, 0 pending, 0 retransmits
0 responses, 0 timeouts, 0 bad responses
0 bad authenticators, 0 unknown types, 0 dropped
0 ms latest rtt

This table describes the significant fields shown in the display.

Table 2 show radius accounting Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests; UDP destination port for accounting requests.

Related Commands

Command	Description
aaa accounting	Creates a method list for accounting.
aaa authentication (XR-VM)	Creates a method list for authentication.
show radius authentication	Obtains information and detailed statistics for the RADIUS authentication server and port.

show radius authentication

To obtain information and detailed statistics for the RADIUS authentication server and port, use the show radius authentication command.

show radius authentication

Syntax Description

This command has no keywords or arguments.

Command Default

If no RADIUS servers are configured on the router, the output is empty. If the default values are for the counter (for example, request and pending), the values are all zero because the RADIUS server was just defined and not used yet.

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID

Task ID	Operations
aaa	read

The following sample output is for the show radius authentication command:

RP/0/RP0/CPU0:router# show radius authentication 

Server: 12.26.25.61, port: 1812
0 requests, 0 pending, 0 retransmits
0 accepts, 0 rejects, 0 challenges
0 timeouts, 0 bad responses, 0 bad authenticators
0 unknown types, 0 dropped, 0 ms latest rtt

Server: 12.26.49.12, port: 1812
0 requests, 0 pending, 0 retransmits
0 accepts, 0 rejects, 0 challenges
0 timeouts, 0 bad responses, 0 bad authenticators
0 unknown types, 0 dropped, 0 ms latest rtt

Server: 12.38.28.18, port: 21099
0 requests, 0 pending, 0 retransmits
0 accepts, 0 rejects, 0 challenges
0 timeouts, 0 bad responses, 0 bad authenticators
0 unknown types, 0 dropped, 0 ms latest rtt

This table describes the significant fields shown in the display.

Table 3 show radius authentication Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests; UDP destination port for accounting requests.

Related Commands

Command	Description
aaa accounting	Creates a method list for accounting.
aaa authentication (XR-VM)	Creates a method list for authentication.
show radius accounting	Obtains information and detailed statistics for the RADIUS accounting server and port.

show radius dead-criteria

To obtain information about the dead server detection criteria, use the show radius dead-criteria command.

show radius dead-criteria host ip-addr [ auth-port auth-port ] [ acct-port acct-port ]

Syntax Description

host ip-addr	Specifies the name or IP address of the configured RADIUS server.
auth-port auth-port	(Optional) Specifies the authentication port for the RADIUS server. The default value is 1645.
acct-port acct-port	(Optional) Specifies the accounting port for the RADIUS server. The default value is 1646.

Command Default

The default values for time and tries are not fixed to a single value; therefore, they are calculated and fall within a range of 10 to 60 seconds for time and 10 to 100 for tries.

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID

Task ID	Operations
aaa	read

The following sample output is for the show radius dead-criteria command:

RP/0/RP0/CPU0:router# show radius dead-criteria host 12.26.49.12 auth-port 11000 acct-port 11001 

Server: 12.26.49.12/11000/11001
Dead criteria time: 10 sec (computed) tries: 10 (computed)

This table describes the significant fields shown in the display.

Table 4 show radius dead-criteria Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests/UDP destination port for accounting requests.
Timeout	Number of seconds the router waits for a server host to reply before timing out.
Retransmits	Number of times Cisco IOS XR software searches the list of RADIUS server hosts before giving up.

Related Commands

Command	Description
radius-server dead-criteria time	Forces one or both of the criteria that is used to mark a RADIUS server as dead.
radius-server deadtime	Defines the length of time in minutes for a RADIUS server to remain marked dead.

show radius server-groups

To display information about the RADIUS server groups that are configured in the system, use the show radius server-groups command.

show radius server-groups [ group-name [detail] ]

Syntax Description

group-name	(Optional) Name of the server group.The properties are displayed.
detail	(Optional) Displays properties for all the server groups.

Command Default

None

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show radius server-groups command to display information about each configured RADIUS server group, including the group name, numbers of servers in the group, and a list of servers in the named server group. A global list of all configured RADIUS servers, along with authentication and accounting port numbers, is also displayed.

Task ID

Task ID	Operations
aaa	read

The inherited global message is displayed if no group level deadtime is defined for this group; otherwise, the group level deadtime value is displayed and this message is omitted. The following sample output is for the show radius server-groups command:

RP/0/RP0/CPU0:router# show radius server-groups 

Global list of servers
  Contains 2 server(s)
    Server 1.1.1.1/1645/1646 
    Server 2.2.2.2/1645/1646 

Server group 'radgrp1' has 2 server(s)
  Dead time: 0 minute(s) (inherited from global)
  Contains 2 server(s)
    Server 1.1.1.1/1645/1646 
    Server 2.2.2.2/1645/1646 

Server group 'radgrp-priv' has 1 server(s)
  Dead time: 0 minute(s) (inherited from global)
  Contains 1 server(s)
    Server 3.3.3.3/1645/1646 [private]

The following sample output shows the properties for all the server groups in group “radgrp1:”

RP/0/RP0/CPU0:router# show radius server-groups radgrp1 detail 

Server group 'radgrp1' has 2 server(s)
    VRF default (id 0x60000000)
    Dead time: 0 minute(s) (inherited from global)
    Contains 2 server(s)
      Server 1.1.1.1/1645/1646
    Authentication:
      0 requests, 0 pending, 0 retransmits
      0 accepts, 0 rejects, 0 challenges
      0 timeouts, 0 bad responses, 0 bad authenticators
      0 unknown types, 0 dropped, 0 ms latest rtt
    Accounting:
      0 requests, 0 pending, 0 retransmits
      0 responses, 0 timeouts, 0 bad responses
      0 bad authenticators, 0 unknown types, 0 dropped
      0 ms latest rtt
      Server 2.2.2.2/1645/1646
    Authentication:
      0 requests, 0 pending, 0 retransmits
      0 accepts, 0 rejects, 0 challenges
      0 timeouts, 0 bad responses, 0 bad authenticators
      0 unknown types, 0 dropped, 0 ms latest rtt
    Accounting:
      0 requests, 0 pending, 0 retransmits
      0 responses, 0 timeouts, 0 bad responses
      0 bad authenticators, 0 unknown types, 0 dropped
      0 ms latest rtt

The following sample output shows the properties for all the server groups in detail in the group “raddgrp-priv:”

RP/0/RP0/CPU0:router# show radius server-groups radgrp-priv detail 

Server group 'radgrp-priv' has 1 server(s)
    VRF default (id 0x60000000)
    Dead time: 0 minute(s) (inherited from global)
    Contains 1 server(s)
      Server 3.3.3.3/1645/1646 [private]
    Authentication:
      0 requests, 0 pending, 0 retransmits
      0 accepts, 0 rejects, 0 challenges
      0 timeouts, 0 bad responses, 0 bad authenticators
      0 unknown types, 0 dropped, 0 ms latest rtt
    Accounting:
      0 requests, 0 pending, 0 retransmits
      0 responses, 0 timeouts, 0 bad responses
      0 bad authenticators, 0 unknown types, 0 dropped
      0 ms latest rtt

This table describes the significant fields shown in the display.

Table 5 show radius server-groups Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests/UDP destination port for accounting requests.

Related Commands

Command	Description
vrf (RADIUS)	Configures the Virtual Private Network (VPN) routing and forwarding (VRF) reference of an AAA RADIUS server group.

show tacacs

To display information about the TACACS+ servers that are configured in the system, use the show tacacs command.

show tacacs

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show tacacs command to display statistics for each configured TACACS+ server.

Task ID

Task ID	Operations
aaa	read

The following is sample output from the show tacacs command:

RP/0/RP0/CPU0:router# show tacacs

Server:1.1.1.1/21212 opens=0 closes=0 aborts=0 errors=0
        packets in=0 packets out=0
        status=up single-connect=false

Server:2.2.2.2/21232 opens=0 closes=0 aborts=0 errors=0
        packets in=0 packets out=0
        status=up single-connect=false

This table describes the significant fields shown in the display.

Table 6 show tacacs Field Descriptions
Field	Description
Server	Server IP address.
opens	Number of socket opens to the external server.
closes	Number of socket closes to the external server.
aborts	Number of tacacs requests that have been aborted midway.
errors	Number of error replies from the external server.
packets in	Number of TCP packets that have been received from the external server.
packets out	Number of TCP packets that have been sent to the external server.

show tacacs server-groups

To display information about the TACACS+ server groups that are configured in the system, use the show tacacs server-groups command.

show tacacs server-groups

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show tacacs server-groups command to display information about each configured TACACS+ server group, including the group name, numbers of servers in the group, and a list of servers in the named server group. A global list of all configured TACACS+ servers is also displayed.

Task ID

Task ID	Operations
aaa	read

The following is sample output from the show tacacs server-groups command:

RP/0/RP0/CPU0:router# show tacacs server-groups

Global list of servers
  Server 12.26.25.61/23456
  Server 12.26.49.12/12345
  Server 12.26.49.12/9000
  Server 12.26.25.61/23432
  Server 5.5.5.5/23456
  Server 1.1.1.1/49
Server group ‘tac100’ has 1 servers
Server 12.26.49.12

This table describes the significant fields shown in the display.

Table 7 show tacacs server-groups Field Descriptions
Field	Description
Server	Server IP address.

Related Commands

Command	Description
tacacs-server host	Specifies a TACACS+ host.

show user

To display all user groups and task IDs associated with the currently logged-in user, use the show user command.

show user [ all | authentication | group | tasks ]

Syntax Description

all	(Optional) Displays all user groups and task IDs for the currently logged-in user.
authentication	(Optional) Displays authentication method parameters for the currently logged-in user.
group	(Optional) Displays the user groups associated with the currently logged-in user.
tasks	(Optional) Displays task IDs associated with the currently logged-in user. The tasks keyword indicates which task is reserved in the sample output.

Command Default

None

Command Modes

XR EXEC

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show user command to display all user groups and task IDs associated with the currently logged-in user.

Task ID

Task ID	Operations
none	—

The following sample output displays the authentication method parameters from the show user command:

RP/0/RP0/CPU0:router# show user authentication 

local

The following sample output displays the groups from the show user command:

RP/0/RP0/CPU0:router# show user group 

root-system

The following sample output displays all the information for the groups and tasks from the show user command:

RP/0/RP0/CPU0:router# show user all 
Username: lab
Groups: root-system
Authenticated using method local
User lab has the following Task ID(s):

Task:                  aaa  : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:          : READ    WRITE    EXECUTE    DEBUG
Task:          config- : READ    WRITE    EXECUTE    DEBUG
Task:      : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:                 : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:             : READ    WRITE    EXECUTE    DEBUG
Task:          : READ    WRITE    EXECUTE    DEBUG
Task:          : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              mpls- : READ    WRITE    EXECUTE    DEBUG
Task:              mpls- : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:               : READ    WRITE    EXECUTE    DEBUG
Task:               : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:             - : READ    WRITE    EXECUTE    DEBUG
Task:                  ppp  : READ    WRITE    EXECUTE    DEBUG
Task:                  qos  : READ    WRITE    EXECUTE    DEBUG
Task:                  rib  : READ    WRITE    EXECUTE    DEBUG
Task:                  rip  : READ    WRITE    EXECUTE    DEBUG
Task:              root-lr  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:          root-system  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:            route-map  : READ    WRITE    EXECUTE    DEBUG
Task:         route-policy  : READ    WRITE    EXECUTE    DEBUG
Task:                  sbc  : READ    WRITE    EXECUTE    DEBUG
Task:                 snmp  : READ    WRITE    EXECUTE    DEBUG
Task:            sonet-sdh  : READ    WRITE    EXECUTE    DEBUG
Task:               static  : READ    WRITE    EXECUTE    DEBUG
Task:               sysmgr  : READ    WRITE    EXECUTE    DEBUG
Task:               system  : READ    WRITE    EXECUTE    DEBUG
Task:            transport  : READ    WRITE    EXECUTE    DEBUG
Task:           tty-access  : READ    WRITE    EXECUTE    DEBUG
Task:               tunnel  : READ    WRITE    EXECUTE    DEBUG
Task:            universal  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:                 vlan  : READ    WRITE    EXECUTE    DEBUG
Task:                 vrrp  : READ    WRITE    EXECUTE    DEBUG

The following sample output displays the tasks and indicates which tasks are reserved from the show user command:

RP/0/RP0/CPU0:router# show user tasks

Task:                  aaa  : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:                   : READ    WRITE    EXECUTE    DEBUG
Task:          : READ    WRITE    EXECUTE    DEBUG
Task:          config- : READ    WRITE    EXECUTE    DEBUG
Task:      : READ    WRITE    EXECUTE    DEBUG
Task:                : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:                 : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:        : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:             : READ    WRITE    EXECUTE    DEBUG
Task:          : READ    WRITE    EXECUTE    DEBUG
Task:          : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:              mpls- : READ    WRITE    EXECUTE    DEBUG
Task:              mpls- : READ    WRITE    EXECUTE    DEBUG
Task:            : READ    WRITE    EXECUTE    DEBUG
Task:               : READ    WRITE    EXECUTE    DEBUG
Task:               : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:                  : READ    WRITE    EXECUTE    DEBUG
Task:              : READ    WRITE    EXECUTE    DEBUG
Task:             - : READ    WRITE    EXECUTE    DEBUG
Task:                  ppp  : READ    WRITE    EXECUTE    DEBUG
Task:                  qos  : READ    WRITE    EXECUTE    DEBUG
Task:                  rib  : READ    WRITE    EXECUTE    DEBUG
Task:                  rip  : READ    WRITE    EXECUTE    DEBUG
Task:              root-lr  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:          root-system  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:            route-map  : READ    WRITE    EXECUTE    DEBUG
Task:         route-policy  : READ    WRITE    EXECUTE    DEBUG
Task:                  sbc  : READ    WRITE    EXECUTE    DEBUG
Task:                 snmp  : READ    WRITE    EXECUTE    DEBUG
Task:            sonet-sdh  : READ    WRITE    EXECUTE    DEBUG
Task:               static  : READ    WRITE    EXECUTE    DEBUG
Task:               sysmgr  : READ    WRITE    EXECUTE    DEBUG
Task:               system  : READ    WRITE    EXECUTE    DEBUG
Task:            transport  : READ    WRITE    EXECUTE    DEBUG
Task:           tty-access  : READ    WRITE    EXECUTE    DEBUG
Task:               tunnel  : READ    WRITE    EXECUTE    DEBUG
Task:            universal  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:                 vlan  : READ    WRITE    EXECUTE    DEBUG
Task:                 vrrp  : READ    WRITE    EXECUTE    DEBUG

Related Commands

Command	Description
show aaa (XR-VM)	Displays the task maps for selected user groups, local users, or task groups.

single-connection

To multiplex all TACACS+ requests to this server over a single TCP connection, use the single-connection command in TACACS host configuration mode. To disable the single TCP connection for all new sessions that use a separate connection, use the no form of this command.

single-connection

no single-connection

Syntax Description

This command has no keywords or arguments.

Command Default

By default, a separate connection is used for each session.

Command Modes

TACACS host configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The single-connection command allows the TACACS+ server to handle a greater number of TACACS operations than would be possible if multiple TCP connections were used to send requests to a server.

The TACACS+ server that is being used must support single-connection mode for this to be effective; otherwise, the connection between the network access server and the TACACS+ server locks up or you can receive unauthentic errors.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to configure a single TCP connection to be made with the TACACS+ server (IP address 209.165.200.226) and all authentication, authorization, accounting requests to use this TCP connection. This works only if the TACACS+ server is also configured in single-connection mode. To configure the TACACS+ server in single connection mode, refer to the respective server manual.

RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226 
RP/0/RP0/CPU0:router(config-tacacs-host)# single-connection

Related Commands

Command	Description
tacacs-server host	Specifies a TACACS+ host.

tacacs-server host

To specify a TACACS+ host server, use the tacacs-server host command. To delete the specified name or address, use the no form of this command.

tacacs-server host host-name [ port port-number ] [ timeout seconds ] [ key [ 0 | 7 ] auth-key ] [single-connection]

no tacacs-server host host-name [ port port-number ]

Syntax Description

host-name	Host or domain name or IP address of the TACACS+ server.
port port-number	(Optional) Specifies a server port number. This option overrides the default, which is port 49. Valid port numbers range from 1 to 65535.
timeout seconds	(Optional) Specifies a timeout value that sets the length of time the authentication, authorization, and accounting (AAA) server waits to receive a response from the TACACS+ server. This option overrides the global timeout value set with the tacacs-server timeout command for this server only. The valid timeout range is from 1 to 1000 seconds. Default is 5.
key [0 \| 7] auth-key	(Optional) Specifies an authentication and encryption key shared between the AAA server and the TACACS+ server. The TACACS+ packets are encrypted using this key. This key must match the key used by the TACACS+ daemon. Specifying this key overrides the key set by the tacacs-server keycommand for this server only. (Optional) Entering 0 specifies that an unencrypted (clear-text) key follows. (Optional) Entering 7 specifies that an encrypted key follows. The auth-key argument specifies the unencrypted key between the AAA server and the TACACS+ server.
single-connection	(Optional) Multiplexes all TACACS+ requests to this server over a single TCP connection. By default, a separate connection is used for each session.

Command Default

No TACACS+ host is specified.

The port-name argument, if not specified, defaults to the standard port 49.

The seconds argument, if not specified, defaults to 5 seconds.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The key keyword must be entered last because it uses a line (text with breaks) rather than a string (text only, with no breaks). Any text and line breaks up to the time the user presses Enter can be used as part of the key.

You can use multiple tacacs-server host commands to specify additional hosts. Cisco IOS XR software searches for hosts in the order in which you specify them.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to specify a TACACS+ host with the IP address 209.165.200.226:

RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226
RP/0/RP0/CPU0:router(config-tacacs-host)#

The following example shows that the default values from the tacacs-server host command are displayed from the show run command:

RP/0/RP0/CPU0:router# show run

Building configuration...
!! Last configuration change at 13:51:56 UTC Mon Nov 14 2005 by lab
!
tacacs-server host 209.165.200.226 port 49
 timeout 5
!

The following example shows how to specify that the router consult the TACACS+ server host named host1 on port number 51. The timeout value for requests on this connection is 30 seconds; the encryption key is a_secret.

RP/0/RP0/CPU0:router(config)# tacacs-server host host1 port 51 timeout 30 key a_secret

Related Commands

Command	Description
key (TACACS+)	Specifies an authentication and encryption key shared between the AAA server and the TACACS+ server.
single-connection	Multiplexes all TACACS+ requests to this server over a single TCP connection.
tacacs-server key	Globally sets the authentication encryption key used for all TACACS+ communications between the router and the TACACS+ daemon.
tacacs-server timeout	Globally sets the interval that the router waits for a server host to reply.
timeout (TACACS+)	Specifies a timeout value that sets the length of time the authentication, authorization, and accounting (AAA) server waits to receive a response from the TACACS+ server.

tacacs-server key

To set the authentication encryption key used for all TACACS+ communications between the router and the TACACS+ daemon, use the tacacs-server key command. To disable the key, use the no form of this command.

tacacs-server key { 0 clear-text-key | 7 encrypted-key | auth-key }

no tacacs-server key { 0 clear-text-key | 7 encrypted-key | auth-key }

Syntax Description

0 clear-text-key	Specifies an unencrypted (cleartext) shared key.
7 encrypted-key	Specifies an encrypted shared key.
auth-key	Specifies the unencrypted key between the AAA server and the TACACS+ server.

Command Default

None

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The key name entered must match the key used on the TACACS+ daemon. The key name applies to all servers that have no individual keys specified. All leading spaces are ignored; spaces within and after the key are not. If you use spaces in your key, do not enclose the key in quotation marks unless the quotation marks themselves are part of the key.

The key name is valid only when the following guidelines are followed:

The clear-text-key argument must be followed by the 0 keyword.
The encrypted-key argument must be followed by the 7 keyword.

The TACACS server key is used only if no key is configured for an individual TACACS server. Keys configured for an individual TACACS server always override this global key configuration.

Task ID

Task ID	Operations
aaa	read, write

The following example sets the authentication and encryption key to key1:

 RP/0/RP0/CPU0:router(config)# tacacs-server key key1

Related Commands

Command	Description
key (TACACS+)	Specifies an authentication and encryption key shared between the AAA server and the TACACS+ server.
tacacs-server host	Specifies a TACACS+ host.

tacacs-server timeout

To set the interval that the server waits for a server host to reply, use the tacacs-server timeout command. To restore the default, use the no form of this command.

tacacs-server timeout seconds

no tacacs-server timeout seconds

Syntax Description

seconds

Integer that specifies the timeout interval (in seconds) from 1 to 1000.

Command Default

5 seconds

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The TACACS+ server timeout is used only if no timeout is configured for an individual TACACS+ server. Timeout intervals configured for an individual TACACS+ server always override this global timeout configuration.

Task ID

Task ID	Operations
aaa	read, write

The following example shows the interval timer being changed to 10 seconds:

RP/0/RP0/CPU0:router(config)# tacacs-server timeout 10

Related Commands

Command	Description
tacacs-server host	Specifies a TACACS+ host.

tacacs source-interface

To specify the source IP address of a selected interface for all outgoing TACACS+ packets, use the tacacs source-interface command. To disable use of the specified interface IP address, use the no form of this command.

tacacs source-interface type path-id

no tacacs source-interface type path-id

Syntax Description

type

Interface type. For more information, use the question mark (?) online help function.

path-id

Physical interface or virtual interface.

Note

Use the show interfaces command in EXEC mode to see a list of all interfaces currently configured on the router.

For more information about the syntax for the router, use the question mark (?) online help function.

Command Default

If a specific source interface is not configured, or the interface is down or does not have an IP address configured, the system selects an IP address.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the tacacs source-interface command to set the IP address of the specified interface for all outgoing TACACS+ packets. This address is used as long as the interface is in the up state. In this way, the TACACS+ server can use one IP address entry associated with the network access client instead of maintaining a list of all IP addresses.

This command is especially useful in cases where the router has many interfaces and you want to ensure that all TACACS+ packets from a particular router have the same IP address.

When the specified interface does not have an IP address or is in a down state, TACACS+ behaves as if no source interface configuration is used.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to set the IP address of the specified interface for all outgoing TACACS+ packets:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# tacacs source-interface GigabitEthernet 0/0/0/29

Related Commands

Command	Description
aaa group server tacacs+	Groups different server hosts into distinct lists and distinct methods.

task

To add a task ID to a task group, use the task command in task group configuration mode. To remove a task ID from a task group, use the no form of this command.

task { read | write | execute | debug } taskid-name

no task { read | write | execute | debug } taskid-name

Syntax Description

read	Enables read-only privileges for the named task ID.
write	Enables write privileges for the named task ID. The term “write” implies read also.
execute	Enables execute privileges for the named task ID.
debug	Enables debug privileges for the named task ID.
taskid-name	Name of the task ID.

Command Default

No task IDs are assigned to a newly created task group.

Command Modes

Task group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the task command in task group configuration mode. To access task group configuration mode, use the taskgroup command in global configuration mode.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to enable execute privileges for the config-services task ID and associate that task ID with the task group named taskgroup1:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# taskgroup taskgroup1 
RP/0/RP0/CPU0:router(config-tg)# task execute config-services

Related Commands

Command	Description
taskgroup	Configures a task group to be associated with a set of task IDs.

taskgroup

To configure a task group to be associated with a set of task IDs, and to enter task group configuration mode, use the taskgroup command. To delete a task group, use the no form of this command.

taskgroup taskgroup-name [ description string | task { read | write | execute | debug } taskid-name | inherit taskgroup taskgroup-name ]

no taskgroup taskgroup-name

Syntax Description

taskgroup-name	Name of a particular task group.
description	(Optional) Enables you to create a description for the named task group.
string	(Optional) Character string used for the task group description.
task	(Optional) Specifies that a task ID is to be associated with the named task group.
read	(Optional) Specifies that the named task ID permits read access only.
write	(Optional) Specifies that the named task ID permits read and write access only.
execute	(Optional) Specifies that the named task ID permits execute access.
debug	(Optional) Specifies that the named task ID permits debug access only.
taskid-name	(Optional) Name of a task: the task ID.
inherit taskgroup	(Optional) Copies permissions from the named task group.
taskgroup-name	(Optional) Name of the task group from which permissions are to be inherited.

Command Default

Five predefined user groups are available by default.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task groups are configured with a set of task IDs for each action type. Deleting a task group that is still referenced in the system results in a warning and rejection of the deletion.

Entering the taskgroup command with no keywords or arguments enters task group configuration mode, in which you can use the description, inherit, show, and task commands.

Task ID

Task ID	Operations
aaa	read, write

The following example assigns read bgp permission to the task group named alpha:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# taskgroup alpha 
RP/0/RP0/CPU0:router(config-tg)# task read bgp

Related Commands

Command	Description
description (AAA)	Creates a task group description in task configuration mode.
task	Adds a task ID to a task group.

timeout (TACACS+)

To specify a timeout value that sets the length of time the authentication, authorization, and accounting (AAA) server waits to receive a response from the TACACS+ server, use the timeout (TACACS+) command in TACACS host configuration mode. To disable this command and return to the default timeout value of 5 seconds, use the no form of this command.

timeout seconds

no timeout seconds

Syntax Description

seconds

Timeout value (in seconds). The range is from 1 to 1000. If no timeout is specified, the global value is used.

Command Default

seconds: 5

Command Modes

TACACS host configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The timeout (TACACS+) command overrides the global timeout value set with the tacacs-server timeout command for this server only.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to set the number of seconds for the timeout value:

RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226
RP/0/RP0/CPU0:router(config-tacacs-host)# timeout 500

Related Commands

Command	Description
tacacs-server host	Specifies a TACACS+ host.

timeout login response

To set the interval that the server waits for a reply to a login, use the timeout login response command in line template configuration mode. To restore the default, use the no form of this command.

timeout login response seconds

no timeout login response seconds

Syntax Description

seconds

Integer that specifies the timeout interval (in seconds) from 0 to 300.

Command Default

seconds: 30

Command Modes

Line template configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the timeout login response command in line template configuration mode to set the timeout value. This timeout value applies to all terminal lines to which the entered line template is applied. This timeout value can also be applied to line console. After the timeout value has expired, the user is prompted again. The retry is allowed three times.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to change the interval timer to 20 seconds:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# line template alpha 
RP/0/RP0/CPU0:router(config-line)# timeout login response 20

Related Commands

Command	Description
login authentication	Enables AAA authentication for logging in.

usergroup

To configure a user group and associate it with a set of task groups, and to enter user group configuration mode, use the usergroup command. To delete a user group, or to delete a task-group association with the specified user group, use the no form of this command.

usergroup usergroup-name

no usergroup usergroup-name

Syntax Description

usergroup-name

Name of the user group. The usergroup-name argument can be only one word. Spaces and quotation marks are not allowed.

Command Default

Five predefined user groups are available by default.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

User groups are configured with the command parameters for a set of users, such as task groups. You can remove specific user groups by using the no form of the usergroup command. You can remove the user group itself by using the no form of the command without giving any parameters. Deleting a user group that is still referenced in the system results in a warning and a rejection of the deletion.

Use the inherit usergroup command to copy permissions from other user groups. The user group is inherited by the parent group and forms a union of all task IDs specified in those groups. Circular inclusions are detected and rejected. User groups cannot inherit properties from predefined groups, such as root-system and owner-sdr.

From global configuration mode, you can display all the configured user groups. However, you cannot display all the configured user groups in usergroup configuration mode.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to add permissions from the user group beta to the user group alpha:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# usergroup alpha 
RP/0/RP0/CPU0:router(config-ug)# inherit usergroup beta

Related Commands

Command	Description
description (AAA)	Creates a description of a task group during configuration.
inherit usergroup	Enables a user group to derive permissions from another user group.
taskgroup	Configures a task group to be associated with a set of task IDs.

username

To configure a new user with a username, establish a password, grant permissions for the user, and to enter username configuration mode, use the username command. To delete a user from the database, use the no form of this command.

username user-name [ password { [0] | 7 } password | secret { [0] | 5 } password | group usergroup-name ]

no username user-name [ password { 0 | 7 } password | secret { 0 | 5 } password | group usergroup-name ]

Syntax Description

user-name	Name of the user. The user-name argument can be only one word. Spaces and quotation marks are not allowed.
password	(Optional) Enables a password to be created for the named user.
0	(Optional) Specifies that an unencrypted (clear-text) password follows. The password will be encrypted for storage in the configuration using a Cisco proprietary encryption algorithm.
7	(Optional) Specifies that an encrypted password follows.
password	(Optional) Specifies the unencrypted password text to be entered by the user to log in, for example, lab . If encryption is configured, the password is not visible to the user. Can be up to 253 characters in length.
secret	(Optional) Enables an MD5-secured password to be created for the named user.
0	(Optional) Specifies that an unencrypted (clear-text) password follows. The password will be encrypted for storage in the configuration using an MD5 encryption algorithm.
5	(Optional) Specifies that an encrypted password follows.
group	(Optional) Enables a named user to be associated with a user group.
usergroup-name	(Optional) Name of a user group as defined with the usergroup command.

Command Default

No usernames are defined in the system.

Command Modes

XR Config

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Note

A user is never allowed to have cisco-support privileges as the only group.

Use the username command to identify the user and enter username configuration mode. Password and user group assignments can be made from either XR Config mode or username configuration submode. Permissions (task IDs) are assigned by associating the user with one or more defined user groups.

Each user is identified by a username that is unique across the administrative domain. Each user should be made a member of at least one user group. Deleting a user group may orphan the users associated with that group. The AAA server authenticates orphaned users, but most commands are not authorized.

The username command is associated with a particular user for local login authentication by default. Alternatively, a user and password can be configured in the database of the TACACS+ server for TACACS+ login authentication. For more information, see the description of the aaa authentication (XR-VM) command.

The predefined group root-system may be specified only by root-system users while administration is configured.

Note

To enable the local networking device to respond to remote Challenge Handshake Authentication Protocol (CHAP) challenges, one username command entry must be the same as the hostname entry that has already been assigned to the other networking device.

Task ID

Task ID	Operations
aaa	read, write

The following example shows the commands available after executing the username command:

RP/0/RP0/CPU0:router# config 
RP/0/RP0/CPU0:router(config)# username user1  
RP/0/RP0/CPU0:router(config-un)# ?

clear	Clear the uncommitted configuration
commit	Commit the configuration changes to running
describe	Describe a command without taking real actions
do	Run an exec command
exit	Exit from this submode
group	User group in which this user will be a member of
no	Negate a command or set its defaults
password	Specify the password for the user
pwd	Commands used to reach current submode
root	Exit to the XR Config mode
secret	Specify the secure password for the user
show	Show contents of configuration

RP/0//CPU0:router(config-un)#

The following example shows how to establish the clear-text password password1 for the user name user1:

RP/0//CPU0:router# configure 
RP/0//CPU0:router(config)# username user1  
RP/0//CPU0:router(config-un)# password 0 password1

Related Commands

Command	Description
aaa authentication (XR-VM)	Defines a method list for authentication.
group (AAA)	Adds a user to a group.
password (AAA)	Creates a login password for a user.
secret	Creates a secure login secret for a user.

users group

To associate a user group and its privileges with a line, use the users group command in line template configuration mode. To delete a user group association with a line, use the no form of this command.

users group { usergroup-name | cisco-support | netadmin | operator | root-lr | root-system | sysadmin }

no users group { usergroup-name | cisco-support | netadmin | operator | root-lr | root-system | serviceadim | sysadmin }

Syntax Description

usergroup-name	Name of the user group. The usergroup-name argument can be only one word. Spaces and quotation marks are not allowed.
cisco-support	Specifies that users logging in through the line are given Cisco support personnel privileges.
netadmin	Specifies that users logging in through the line are given network administrator privileges.
operator	Specifies that users logging in through the line are given operator privileges.
root-lr	Specifies that users logging in through the line are given root logical router (LR) privileges.
root-system	Specifies that users logging in through the line are given root system privileges.
serviceadmin	Specifies that users logging in through the line are given service administrator group privileges.
sysadmin	Specifies that users logging in through the line are given system administrator privileges.

Command Default

None

Command Modes

Line template configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the users group command to enable a user group and its privileges to be associated with a line, meaning that users logging in through the line are given the privileges of the particular user group.

Task ID

Task ID	Operations
aaa	read, write

In the following example, if a vty-pool is created with line template vty, users logging in through vty are given operator privileges:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa authen login vty-authen line 
RP/0/RP0/CPU0:router(config)# commit 
RP/0/RP0/CPU0:router(config)# line template vty 
RP/0/RP0/CPU0:router(config-line)# users group operator 
RP/0/RP0/CPU0:router(config-line)# login authentication

vrf (RADIUS)

To configure the Virtual Private Network (VPN) routing and forwarding (VRF) reference of an AAA RADIUS server group, use the vrf command in RADIUS server-group configuration mode. To enable server groups to use the global (default) routing table, use the no form of this command.

vrf vrf-name

no vrf vrf-name

Syntax Description

vrf-name

Name assigned to a VRF.

Command Default

The default VRF is used.

Command Modes

RADIUS server-group configuration

Command History

Release	Modification
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the vrf command to specify a VRF for an AAA RADIUS server group and enable dial-up users to use AAA servers in different routing domains.

Task ID

Task ID	Operations
aaa	read, write

The following example shows how to use the vrf command:

RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server radius group1 
RP/0/RP0/CPU0:router(config-sg-radius)# vrf wal-mart

Related Commands

Command	Description
radius source-interface	Forces RADIUS to use the IP address of a specified interface or subinterface for all outgoing RADIUS packets.
server-private (RADIUS)	Configures the IP address of the private RADIUS server for the group server.