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Cisco ASR 901 Series Aggregation Services Routers

Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.2(2)SNH1

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Table Of Contents

Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.2(2)SNH1

Introduction

System Specifications

Memory Details

Determining the Software Version

New and Changed Information

New Hardware Features in Release 15.2(2)SNH1

New Software Features in Release 15.2(2)SNH1

ACL-based QoS

Inverse Multiplexing over ATM

Layer 2 Control Protocol Tunneling

TDM Local Switching

Modified Software Features in Release 15.2(2)SNH1

Software Licensing

Configuring Ethernet Virtual Connections

Limitations and Restrictions

Supported Hardware

Supported MIBs

Caveats

Using Bug Toolkit

Search Bugs

Save Bugs

Save Search

Retrieve Saved Search or Bugs

Export to Spreadsheet

Open Caveats

Closed Caveats

Troubleshooting

Related Documentation

Services and Support


Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.2(2)SNH1

October 2012

OL-28112-01

This release notes is for the Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.2(2)SNH1 and contains the following sections:

•Introduction

•System Specifications

•New and Changed Information

•Limitations and Restrictions

•Caveats

•Troubleshooting

•Related Documentation

•Services and Support

Introduction

The Cisco ASR 901 Series Aggregation Services Router is a cell-site access platform specifically designed to aggregate and transport mixed-generation radio access network (RAN) traffic. The router is used at the cell site edge as a part of a 2G, 3G, or 4G RAN.

Table 1 lists the Cisco ASR 901 router model versions.

Table 1 Cisco ASR 901 Router Models

TDM + Ethernet Version
Ethernet Version

•A901-12C-FT-D

•A901-4C-FT-D

•A901-6CZ-FT-D1

•A901-6CZ-FT-A2

•A901-12C-F-D

•A901-4C-F-D

•A901-6CZ-F-D1

•A901-6CZ-F-A2

1 DC power

2 AC power


Note Some of the Cisco ASR 901 models have port based licensing. For more details, see the Licensing chapter in Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide.

The Cisco ASR 901 router helps enable a variety of RAN solutions by extending IP connectivity to devices using Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), Node Bs using High Speed Packet Access (HSPA) or Long Term Evolution (LTE), base transceiver stations (BTSs) using Enhanced Data Rates for GSM Evolution (EDGE), Code Division Multiple Access (CDMA), CDMA-2000, EVDO, or WiMAX, and other cell-site equipment.

It transparently and efficiently transports cell-site voice, data, and signaling traffic over IP using traditional T1 and E1 circuits, as well as alternative backhaul networks such as Carrier Ethernet and DSL, Ethernet in the First Mile (EFM), and WiMAX. It also supports standards-based Internet Engineering Task Force (IETF) Internet protocols over the RAN transport network, including those standardized at the Third-Generation Partnership Project (3GPP) for IP RAN transport. Custom designed for the cell site, the Cisco ASR 901 router features a small form factor, extended operating temperature, and cell-site DC input voltages.

System Specifications

Table 2 lists the supported system configurations for the Cisco ASR 901 router:

Memory Details

Table 2 lists the memory available for Cisco ASR 901 router.

Table 2 Cisco IOS Release 15.2(2)SNH1 Memory Details

Platform
Software Image
Flash Memory
DRAM Memory
Runs From

Cisco ASR 901 Series Aggregation Services Router TDM version

asr901-universalk9-mz

128 MB

512 MB

RAM

Cisco ASR 901 Series Aggregation Services Router, Ethernet version

asr901-universalk9-mz

128 MB

512 MB

RAM


Determining the Software Version

To determine the image and version of Cisco IOS software running on your Cisco ASR 901 router, log in to the router and enter the show version command in the EXEC mode: 

Router> show version

Cisco IOS Software, 901 Software (ASR901-UNIVERSALK9-M), Version 15.2(2)SNH1, RELEASE 
SOFTWARE (fc3)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Wed 10-Oct-12 19:48 by prod_rel_team

New and Changed Information

•New Hardware Features in Release 15.2(2)SNH1

•New Software Features in Release 15.2(2)SNH1

•Modified Software Features in Release 15.2(2)SNH1

New Hardware Features in Release 15.2(2)SNH1

The Cisco IOS Release 15.2(2)SNH1 introduces four new variants of the Cisco ASR 901 10G Series Aggregation Services Router. The four SKUs of the router are as follows:

•A901-6CZ-FT-D (Ethernet + TDM with DC Power)

•A901-6CZ-FT-A (Ethernet + TDM with AC Power)

•A901-6CZ-F-D (Ethernet only with DC Power)

•A901-6CZ-F-A (Ethernet only with AC Power)

For more details about the Cisco ASR 901 10G router, see the Cisco ASR 901 10G Series Aggregation Services Router Hardware Installation Guide.

New Software Features in Release 15.2(2)SNH1

The following features are supported from this release:

ACL-based QoS

The access control list (ACL) based QoS feature provides classification based on source and destination IP. The current implementation of this feature supports only named ACLs.

For more information about this feature, see the Configuring QoS guide at the following URL: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/qos.html

Inverse Multiplexing over ATM

The Inverse Multiplexing over ATM (IMA) technology is used to transport ATM traffic over a bundle of T1 or E1 cables, known as IMA group. This technology provides a scalable and cost-effective solution to expand WAN bandwidth from T1 speeds, without having to go for DS3 or OC3 circuits. With IMA, you can bundle two or more T1 circuits to effectively gain upward of 3 Mbps speed.

For more information about this feature, see Inverse Multiplexing over ATM guide at the following URL:

http://cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/ima.html

Layer 2 Control Protocol Tunneling

The Layer 2 Control Protocol Tunneling (L2PT) allows tunneling of Ethernet protocol frames across layer 2 switching domains.

For more information about this feature, see Layer 2 Control Protocol Peering, Forwarding and Tunneling guide at the following URL:

http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/l2pt.html

TDM Local Switching

The Time-Division Multiplexing (TDM) local switching in E1 mode is supported from Cisco IOS Release 15.2(2)SNH1 onwards. This feature allows switching of Layer 2 data between two circuit emulation (CEM) interfaces on the same router.

For more information about this feature, see Pseudowire guide at the following URL:

http://cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/pseudowire.html

Modified Software Features in Release 15.2(2)SNH1

This section lists the features modified for this release:

Software Licensing

The 10gigUpgrade and Gige4portflexi licenses are available from Cisco IOS Release 15.2(2)SNH1 onwards. The 10gigUpgrade license is required to enable new 10G ports in the Cisco ASR 901 10G router. This license enables the router to function in 1G mode or 10G mode. The Gige4portflexi license is a combination of copper and SFP ports. This license is not tied to any port type.

For more information about this feature, see Licensing guide at the following URL:

http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/lic.html

Configuring Ethernet Virtual Connections

The restrictions section of the Ethernet Virtual Connections feature is updated.

For more information about the update, see Configuring Ethernet Virtual Connections guide at the following URL:

http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/swevc.html

Limitations and Restrictions

Cisco IOS Release 15.2(2)SNH1 for the Cisco ASR 901 Series Aggregation Services Router has the following general limitations and restrictions:

Note For limitations and restrictions that are specific to features, see the respective feature guide.

•QinQ configuration for Layer3 is not possible with pop1 rewrite. However pop2 configured routed QinQ is supported.

•Default xconnect MTU is 9216.

•For interoperability with other routers for an xconnect session, ensure that the MTU on both PE routers is same before the xconnect session is established.

•VLAN IDs 4093, 4094, and 4095 are reserved for internal usage.

ACL

•Loopback feature should not be enabled when L2 Control Protocol Forwarding is enabled.

•Following IOS keywords are not supported on Cisco ASR 901—match-any, ip-options, logging, icmp-type/code, igmp type, dynamic, reflective, evaluate.

•Ingress PACL and RACL supports TCP/UDP port range; Egress ACL does not support port range.

•Sharing access lists across interfaces is not supported.

•ACL is not supported on Management port (FastEthernet) and serial interfaces.

•Devices in the management network (network connected to Fast Ethernet port) cannot be accessed from any other port. If the default route is configured on Cisco ASR 901 to fast ethernet interface (Fa0/0), all the routed packets will be dropped. However, this configuration could keep CPU busy and affect overall convergence.

Clocking

•External interfaces like BITS and 1PPS have only one port—they work either as an input interface or output interface at a given time.

•The line to external option for external SSU is not supported.

•ToD is not integrated to the router system time. ToD input or output reflects only the PTP time, not the router system time.

•Revertive and non-revertive modes work well only with two clock sources.

•BITS cable length option is supported via platform timing bits line-build-out command.

•There is no automatic recovery from OOR Alarms. It has to be manually cleared using clear platform timing oor-alarms command.

•If copper Gigabit Ethernet port is selected as the input clock source, the link should be configured as a IEEE 802.3 link-slave, using synce state slave command.

•BITS reports LOS only for AIS, LOS and LOF alarms.

•Loop timing is not supported in E1/T1 controllers. (IOS Command—clock source line). However, the clock can be recovered from T1/E1 lines and used to sync system clock using the IOS command network-clock input-source <prio> controller <E1/T1> 0/x.

IEEE 1588v2 (PTP)

•Ordinary clock slave and master mode is supported.

•Unicast Direct and Unicast Negotiation modes are supported; Multicast mode is not supported.

•PTP slave supports both single and two-step modes. PTP master supports only two-step mode.

•VLAN 4093 is used for internal PTP communication; do not use 4093 in your network.

•Loopback interface is used in Cisco ASR 901 router instead of ToP interface for configuring 1588 interface/IP address.

•The output 1pps command is not supported. Alternately, you can use the no input 1pps command.

•Sync and Delay request rates should be above 32pps, the optimum value being 64pps.

•Clock-ports even when configured as slave-only, start off as master. So the initial or reset state of the clock always shows as master. This implies that the master should have higher priority (priority1, priority2) for the slave to accept the master.

Supported Hardware

Table 3 shows the SFP modules supported on the Cisco ASR 901 Router:

Table 3

•CWDM-SFP-1470

•CWDM-SFP-1490

•CWDM-SFP-1510

•CWDM-SFP-1530

•CWDM-SFP-1550

•CWDM-SFP-1570

•CWDM-SFP-1590

•CWDM-SFP-1610

•DWDM-SFP-XXXX1

•GLC-BX-U and GLC-BX-D2

•GLC-EX-SMD

•GLC-LH-SMD

•GLC-LX-SM-RGD

•GLC-SX-MMD

•GLC-SX-MM-RGD

•GLC-T

•GLC-ZX-SM

•GLC-ZX-SMD

•GLC-ZX-SM-RGD

•SFP-10G-ER

•SFP-10G-LR

•SFP-10G-LR-X

•SFP-10G-SR

•SFP-10G-SR-X

•SFP-10G-ZR

•SFP-GE-L

•SFP-GE-S

•SFP-GE-T

•SFP-GE-Z

1 40 wavelengths

2 These SFPs (GLC-BX-U and GLC-BX-D) should be connected back to back to bring the interface link up.


SFPs Supported on the Cisco ASR 901 Router

Note For information on how to configure SFPs, see the Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide.

Supported MIBs

The Cisco ASR 901 router supports the following MIBs:

•BGP4-MIB

•CISCO-SNAPSHOT-MIB

•BRIDGE-MIB

•CISCO-SNMP-TARGET-EXT-MIB

•CISCO-ACCESSENVMON-MIB

•CISCO-STP-EXTENSIONS-MIB

•CISCO-CAR-MIB

•CISCO-SYSLOG-MIB

•CISCO-CDP-MIB

•CISCO-TC

•CISCO-CEF-MIB

•ENTITY-MIB

•CISCO-CLASS-BASED-QOS-MIB

•ETHERLIKE-MIB

•CISCO-CONFIG-COPY-MIB

•HCNUM-TC

•CISCO-CONFIG-MAN-MIB

•IANAifType-MIB

•CISCO-DATA-COLLECTION-MIB

•IEEE8021-CFM-MIB

•CISCO-DOT3-OAM-MIB

•IF-MIB

•CISCO-EIGRP-MIB

•IMA-MIB

•CISCO-ENHANCED-MEMPOOL-MIB

•INT-SERVE-MIB

•CISCO-ENTITY-ASSET-MIB

•IP-FORWARD-MIB

•CISCO-ENTITY-VENDORTYPE-OID-MIB

•IP-MIB

•CISCO-ENVMON-MIB

•MPLS-LDP-MIB

•CISCO-FLASH-MIB

•MPLS-LSR-MIB

•CISCO-IETF-PW-MIB

•MPLS-VPN-MIB

•CISCO-IETF-PW-TC-MIB

•OLD-CISCO-CHASSIS-MIB

•CISCO-IF-EXTENSION-MIB

•OLD-CISCO-FLASH-MIB

•CISCO-IMAGE-MIB

•OLD-CISCO-INTERFACES-MIB

•CISCO-IPSLA-ETHERNETMIB

•OLD-CISCO-IP-MIB

•CISCO-MEMORY-POOL-MIB

•OLD-CISCO-SYS-MIB

•CISCO-NETSYNC-MIB

•OLD-CISCO-TS-MIB

•CISCO-NTP-MIB

•OSPF-MIB

• CISCO-OSPF-MIB

•PerfHist-TC-MIB

•CISCO-PING-MIB

•RFC1213-MIB

•CISCO-PROCESS-MIB

•RMON2-MIB

•CISCO-PRODUCTS-MIB

•RMON-MIB

•CISCO-PTP-MIB

•SNMP-FRAMEWORKMIB

•CISCO-QUEUE-MIB

•SNMP-TARGET-MIB

•CISCO-RESILIENT-ETHERNET-PROTOCOL-MIB

•SNMPv2-MIB

•CISCO-RTTMON-MIB

•SNMPv2-SMI

•CISCO-SMI-MIB

•SNMPV2-TC

•NOTIFICATION-LOG-MIB

•TCP-MIB

•UDP-MIB

 

Caveats

Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these three severity levels. Only select severity 3 caveats are listed.

This section contains the following topics:

•Using Bug Toolkit

•Open Caveats

•Closed Caveats

Using Bug Toolkit

The Caveats section only includes the bug ID and a short description of the bug. For details on the symptoms, conditions, and workaround for a particular bug you must use the Bug ToolKit. This section explains how to use the bug toolkit and has the following topics:

•Search Bugs

•Save Bugs

•Save Search

•Retrieve Saved Search or Bugs

•Export to Spreadsheet

Search Bugs

This section explains how to use the Bug ToolKit to search for a specific bug.

Step 1 Go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl.

You are prompted to log into Cisco.com. After successful login, the Bug Toolkit page opens.

Step 2 Click Launch Bug Toolkit.

Step 3 To search for a specific bug, enter the bug ID in the Search for Bug ID field and click Go in the Search Bugs tab.

To search for bugs in a specific release, enter the following search criteria:

•Select Product Category—Select Routers.

•Select Products—Select the required product from the list. For example, to view bugs for Cisco ASR 901, choose Cisco ASR 901 Series Aggregation Services Router from the list.

•Software Version—Choose the required Cisco IOS version from the drop-down lists. For example, to view the list of outstanding and resolved bugs in Cisco IOS Release 15.2(2)SNH1, choose 15.2 from the first drop-down list, 2 from the second drop-down list, and SNH1 from the third drop-down list.

•Search for Keyword(s)—Separate search phrases with boolean expressions (AND, NOT, OR) to search within the bug title and details.

•Advanced Options—You can either perform a search using the default search criteria or define custom criteria for an advanced search. To customize the advanced search, select Use custom settings for severity, status, and others and provide the following information:

–Severity—Select the severity level.

–Status—Select Open, Fixed, or Terminated.

Select Open to view all the open bugs. To filter the open bugs, clear the Open check box and select the appropriate sub-options that appear below the Open check box. The sub-options are New, Held, More, Open, Waiting, Assigned, Forwarded, Postponed, Submitted, and Information Required. For example, if you want to view only new bugs in Cisco IOS Release 15.2(2)SNH1, select New.

Select Fixed to view fixed bugs. To filter fixed bugs, clear the Fixed check box and select the appropriate sub-options that appear below the Fixed check box. The sub-options are Resolved or Verified.

Select Terminated to view terminated bugs. To filter terminated bugs, clear the Terminated check box and select the appropriate sub-options that appear below the terminated check box. The sub-options are Closed, Junked, and Unreproducible. Select multiple options as required.

–Advanced—Select the Show only bugs containing bug details check box to view only those bugs that contain detailed information, such as symptoms and workarounds.

–Modified Date—Select this option if you want to filter bugs based on the date on which the bugs were last modified.

–Results Displayed Per Page—Select the appropriate option from the list to restrict the number of results that appear per page.

Step 4 Click Search. The Bug Toolkit displays the list of bugs based on the specified search criteria.

Save Bugs

This section explains how to use Bug ToolKit to save the bugs retrieved by your search in a specific release.

Step 1 Perform a search.
Repeat Step 1 through Step 3 in the "Search Bugs" section.

Step 2 Select the check boxes next to the bug you want to save in the Search Results page and click Save Checked.

The Save Bug Settings area appears under the Search Bugs tab.

Step 3 Specify group settings in the Place in Group field.

•Existing Group—Select an existing group.

•Create New Group—Enter a group name to create a new group.

Existing groups have their group notification options already set. If you select an existing group, go to Step 5.

Step 4 Specify the following email update (group notification) options.

•No emailed updates—Select if you do not want to receive email updates.

•Yes, email updates to—Enter your email address.

–On a schedule—Specify the frequency of email delivery.

Step 5 Click Save Bug.

The Bug ToolKit saves the selected bugs in the specified group.

Save Search

This section explains how to use Bug ToolKit to save your search after searching for the bugs in a specific release.

Step 1 Perform a search.
Repeat Step 1 through Step 3 in the "Search Bugs" section.

Step 2 Click Save Search in the Search Results page to save your search with the specified criteria.

The Save Search Settings area appears under the My Notifications tab.

Step 3 Enter a name for your search in the Search Name field.

Step 4 Specify group settings in the Place in Group field.

•Existing Group—Select an existing group.

•Create New Group—Enter a group name to create a new group.

Existing groups have their group notification options already set. If you select an existing group, go to Step 6.

Step 5 Specify the following email update (group notification) options.

•No emailed updates—Select if you do not want to receive email updates.

•Yes, email updates to—Enter your email address.

–On a schedule—Specify the frequency of email delivery.

Step 6 Click Save Search.

The Bug ToolKit saves your search in the specified group.

Retrieve Saved Search or Bugs

This section explains how to use Bug ToolKit to retrieve a saved search or bugs.

Step 1 Go to http://www.cisco.com/pcgi-bin/Support/Bugtool/launch_bugtool.pl and click Launch Bug Toolkit.

You are prompted to log into Cisco.com.

Step 2 Click My Notifications tab.
My Notifications tab displays the Group Name, Summary, and Actions.

Step 3 Click the group in the Group Name column. The group contains saved search and bugs.

Step 4 Retrieve saved search or bugs.

•Click the saved search name to display the Search Results page.

•Click the saved bug to display details or hover your mouse pointer over the Info link.

The My Notifications tab also provides option to delete bug, delete search, delete group, edit group notifications (in the Actions column), move selected saved search or bugs to different group, and to export saved bugs in all the groups to a spreadsheet.

Export to Spreadsheet

The Bug ToolKit provides the following options to export bugs to a spreadsheet:

•Click Export All to Spreadsheet link in the Search Results page under the Search Bugs tab. Specify file name and folder name to save the spreadsheet. All the bugs retrieved by the search is exported.

•Click Export All to Spreadsheet link in the My Notifications tab. Specify file name and folder name to save the spreadsheet. All the saved bugs in all the groups is exported.

If you are unable to export the spreadsheet, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC (1-800-553-2447).

Open Caveats

This section provides information about the open caveats for the Cisco ASR 901 router running Cisco IOS Release 15.2(2)SNH1.

Bug ID
Description

CSCtk33675

The service instance configuration is rejected when the encapsulation is set to default for double-tagged traffic.

CSCtl70431

The "no rewrite" option is not working on interfaces configured with encapsulation dot1q.

CSCtn18900

Service policy classification based on inner Virtual LAN p-bits is not working.

CSCtn32463

There is no command restriction in applying a service policy to Ethernet Virtual Connection (EVC) on the egress.

CSCtn71094

The no int vlan 1 command deletes VLAN 1.

CSCtn79746

The show ethernet service instance statistics command is not displaying any statistics.

CSCto96840

A CLI restriction is required for Dual Rate Three Color (2R3C) on parent class in Hierarchical Quality of Service (HQoS).

CSCtq26793

Some ports are not getting bundled with the port channel because of attribute mismatch, such as flow-control.

CSCtr05566

The Multiprotocol Label Switching (MPLS) traffic fails when port channel encapsulation is not equal to the bridge domain on the core.

CSCtr70228

High CPU utilization is observed while performing save or copy operation.

CSCts66081

Ingress VLAN translation failure occurs when entries exceed 3000.

CSCts80072

The MPLS forwarding-table counters are not getting incremented.

CSCts80090

Reserved VLANs are not blocked.

CSCts84679

The circuit emulation (CEM) interface displays wrong configuration in the show running-configuration command output, when pw-class is configured.

CSCts85484

Traceback occurs after executing rep preempt segment segid command.

CSCts92808

Weighted Random Early Detection (WRED) counters are not working for discard class 0.

CSCtw52497

The interface drops all ingress packets when you reload the router with write erase, and copy the saved configuration to the running configuration.

CSCtw98202

IP service-level agreement (SLA) echo and jitter is not supported over xconnect.

CSCtx12366

The servo is accepting more than 64PPS Sync in static unicast.

CSCtx22010

SyncE is not supported for the Copper SFPs: GLC-T and SFP-GE-T

CSCtx34208

Clock selection fails for SyncE when interface media-type is SFP.

CSCtx54735

High CPU utilization and traceback is observed while doing copy and paste of 16 E1 controllers unconfigurations.

CSCtx77374

Input errors are increasing when serial interface flaps. This issue is observed on a serial interface that is part of a multilink interface, when keepalive is disabled.

CSCty04070

Traffic fails and continuous traceback is observed, when xconnect is configured on an untagged EVC.

CSCty27927

The bandwidth remaining percent limits traffic to configured value.

To configure QoS scheduler, use the qos-config scheduling-mode Min-BW-Guarantee command under the interface where the queuing policy is configured. This command allows the per-class rate to use any unutilized bandwidth beyond the configured minimum guaranteed bandwidth.

CSCty95886

The file copy function is not detecting errors properly.

CSCtz09377

Some virtual circuits are going down when several xconnect sessions with Connectivity Fault Management (CFM) is configured.

CSCtz16522

The Two-Way Active Measurement Protocol (TWAMP) session-reflector packet truncation fails.

CSCtz34776

Random IP/UDP packets sent to LB interface are getting punted to CPU.

CSCtz38207

Router is rebooting continuously due to failed fans.

CSCtz48755

We recommend the use of minimum 1 sec (or above) hello timer for Hot Standby Router Protocol (HSRP) and Virtual Redundancy Router Protocol (VRRP). With this configuration, we support a maximum of 50 sessions.

CSCtz69403

IPv6 traffic is not getting dropped with link-local as source address.

CSCtz82423

The copper small form-factor pluggable (SFP) link is not coming up during online insertion.

CSCtz82918

IPv6 addresses are not sent in addresses Cisco Discovery Protocol (CDP) TLV.

CSCtz90417

When the router boots up, the following traceback is displayed: "%LICENSE-2-VLS_ERROR: 'VLSsetPersistencePath' failed with an error - rc = 212 - 'Error[212]:"

There is no functionality impact, it can be safely ignored.

CSCtz90437

When the router boots up, it displays the following traceback messages: "*Mar 19 23:45:24.371: %LICENSE-2-UNRECOVERABLE: The IOS license storage on this device was not recovered. UDI=A901-12C-FT-D:FHAK1234567

*Mar 19 23:45:24.375: Following corrupted license storage was un-recoverable : lic0:/lservrc.pri

*Mar 19 23:45:24.375: -Traceback= 265C5A8z 60DC228z 60D97C8z 60D9F64z 580B534z 580573Cze"

These tracebacks may also appear while trying to install a license.

There is no functionality impact, it can be safely ignored.

CSCua19178

Packet drops are seen with IPv6 fragmentation.

CSCua34320

The OSPFv3 keeps old router-id even after changing the loopback address.

CSCua34389

Manual tunnel having MPLS configuration with dynamic option in the following sequence does not set up targeted ldp session resulting in tunnel staying down. shut/no shut of the tunnel brings back the targeted Label Distribution Protocol (LDP) session up. 

interface Tunnel108

ip unnumbered Loopback0

mpls label protocol ldp

mpls ip

tunnel source Loopback0

tunnel destination 36.36.36.36

tunnel mode mpls traffic-eng

tunnel mpls traffic-eng path-option 1 dynamic

The issue is not observed when tunnel mode is configured ahead of tunnel destination,

CSCua40707

The commands related to MPLS and MPLS-TE/FRR are applicable only to SVI interfaces though they can be enabled globally.

Thus configuring the MPLS commands on the GigabitEthernet interface or port-channel is not supported.

CSCua49491

The MPLS traffic engineering counters are not supported.

CSCua51628

The OSPFv3 bidirectional forwarding detection (BFD) flaps after an interface is shut in a port-channel bundle.

CSCua60361

The 6PE related commands should be hidden, as they are not supported.

CSCua81678

The following error message is displayed for /128 prefix: "Reached Maximum Number of IPv6 Hosts".

CSCua84571

Load balancing is not working with different streams having symmetrical addresses.

CSCua88693

The verify command is not supported on usbflash0 device.

Workaround: Copy the file to "flash" file system; verify the image, and then copy the file to usbflash.

CSCua98165

The IPv6 BFD packets should be mapped to Queue 6 on egress interface.

CSCua99910

MAC Address table (MAC learning) failures can be seen with more than 31000 MAC Addresses in certain conditions. So it is safe to assume the platform supports 31000 MAC addresses.

CSCub12715

The "pura_cef_ipv6_route_create_update:Reached Maximum Number of Prefixes supported by platform.Additional Prefixes will not be programmed" message is displayed when the primary path is shut/unshut in a redundant convergent setup.

CSCub17763

The IMA interface is not coming up.

CSCub56206

The egress object is missing from SVI interface after reload of the router.

CSCub71746

Alarm Indication Signal (AIS) is visible momentarily at T1 controller of CE1 while reverting back to primary.

CSCuc15639

Connectivity Fault Management (CFM) session, with 100ms continuity-check interval, is not stable.

CSCuc22630

The router fails to recognize USB when its removed immediately after insertion.

Workaround: After inserting the USB, wait for a few seconds, and then remove it.

CSCuc38512

It is not possible to compress the file system when the last file is deleted.

Workaround: Back up all the files to TFTP server or USB device and erase the file system. This will reclaim the deleted file space.

CSCuc38706

The router may hang or reset if an IOS file is not specified in the boot system flash usbflash0: command.

Workaround: Ensure that proper IOS file is present in the usbflash0 device and the file name is mentioned.

CSCuc62493

The GLC-ZX-SMD SFP is not getting detected in 10G AC (A901-6CZ-Fx-A) SKUs.


Closed Caveats

This section provides information about the closed caveats for the Cisco ASR 901 router running Cisco IOS Release 15.2(2)SNH1.

Bug ID
Description

CSCtg47129

The Cisco IOS Software implementation of the virtual routing and forwarding (VRF) aware network address translation (NAT) feature contains a vulnerability when translating IP packets that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.

This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-nat

Note: The March 27, 2013, Cisco IOS Software Security Advisory bundled publication includes seven Cisco Security Advisories. All advisories address vulnerabilities in Cisco IOS Software. Each Cisco IOS Software Security Advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all Cisco IOS Software vulnerabilities in the March 2013 bundled publication.

Individual publication links are in "Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication" at the following link:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar13.html

CSCtr66435

The counters are showing incorrect values for Layer 2 NNI and User-to-Network Interface (UNI) interfaces.

CSCts78165

Reconfiguring EVCs of mixed type on a GigabitEthernet interface fails.

CSCts82314

Junk values are displayed for class-default counters.

CSCtt28873

The configuration validation routine is not covering all illogical configurations.

CSCtw77870

QoS assertion fails and traceback is observed after deleting the policy-map attached to a MLPPP interface.

CSCtx14499

Traceback occurs after issuing show license status and license save commands.

CSCty04056

Error occurs while trying to clear the Onboard Failure Logging (OBFL) information.

CSCty77530

802.1Q Tunneling (QinQ) is not able to support multiple NNI ports.

CSCtz27856

Layer 2 traffic is failing with QinQ encapsulation between NNI interfaces over EVC.

CSCua84167

The link connected over GigabitEthernet 0/11 is not coming up.

CSCub02378

PTP is not working after reloading the master/slave router.


Troubleshooting

The following sections describe troubleshooting commands you can use with the Cisco ASR 901 Series Aggregation Services Router.

Collecting Data for Router Issues

To collect data for reporting router issues, issue the following command:

•show tech-support—Displays general information about the router if it reports a problem.

Collecting Data for ROMMON Issues

To collect data for ROMMON issues, issue the following command while in the EXEC mode:

•show rom-monitor—Displays currently selected ROM monitor.

Note If you contact Cisco support for assistance, we recommend that you provide any crashinfo files stored in flash memory. For more information about crashinfo files, see http://www.cisco.com/en/US/products/hw/routers/ps167/products_tech_note09186a00800a6743.shtml.

Related Documentation

Documents related to the Cisco ASR 901 Series Aggregation Services Router include the following:

•Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide

•Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide

•Regulatory Compliance and Safety Information for Cisco ASR 901 Series Aggregation Services Routers

To access the related documentation on Cisco.com, go to:

http://www.cisco.com/en/US/partner/products/ps12077/tsd_products_support_series_home.html

Services and Support

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)

Release Notes for Cisco ASR 901 Aggregation Series Router for Cisco IOS Release 15.2(2)SNH1

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