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Table Of Contents
Features and Important Notes for Cisco IOS Release 15.1(1)T
New Hardware Features Supported in Cisco IOS Release 15.1(1)T5
New Software Features Supported in Cisco IOS Release 15.1(1)T5
New Hardware Features Supported in Cisco IOS Release 15.1(3)T3
New Software Features Supported in Cisco IOS Release 15.1(1)T4
Right To Use Licensing Support in CLIs and MIBs for Cisco ISR G2 Platforms
New Hardware Features Supported in Cisco IOS Release 15.1(1)T1
1-Port and 2-Port VWIC3s—Voice WAN Interface Cards
Cisco Integrated Service Routers Generation 1 C-Series
New Software Features Supported in Cisco IOS Release 15.1(1)T1
Voice Support on 1-Port and 2-Port HWICs
New Hardware Features Supported in Cisco IOS Release 15.1(1)T
Cisco 1905 and Cisco 1921 Integrated Service Routers
Cisco 3925E and Cisco 3945E Integrated Service Routers
Cisco Connected Grid Router 2000 Series
Cisco Unified Communications 500 Series
New Software Features Supported in Cisco IOS Release 15.1(1)T
CME (Communications Manager Express) 8.0/SRST (Survivable Remote Site Telephony) 8.0
Compliance-Mode Cipher and Hash Selection for GET VPN Group Member
Direct Download from CCO Capability in Cisco IOS IPS
DoD MLPP PBX1 Certification for CME
DoD Secure Device Support for CME: Support STU/STE/IP STE with CME
IEEE 802.1ag—D8.1 Standard Compliant CFM, Y.1731 Multicast LBM/AIS/RDI/LCK, IP SLA for Ethernet
Key Replacement for Digitally Signed Cisco Software
Layer 2 Switch Port Manageability MIBs
LDAP Integration with Active Directory
MLPP Support for Supplementary Services on SCCP Controlled Analog Endpoints
MPLS MTU Command for GRE Tunnels
Parser Concurrency and Locking Improvements
QoS Policing Support on Switched Virtual Interfaces (SVIs)
RFC4040 Based Clear Channel Codec Signaling with SIP
RSA 4096-Bit Key Generation in SW Crypto Engine Support
Serviceability Support for SIP Dialer and Call Progress Analysis
SIP—TLS/TCP and SRTP with SRST
Support for Dynamic Payload Type Interworking for DTMF and Codec Packets for SIP to SIP Calls
Support for Expires Timer Reset on Receiving or Sending SIP 183 Message
Support for Interworking Between RSVP Capable and RSVP Incapable Networks
Support for MGCP 1.0 Call Control for SRTP on Cisco IOS Gateways
Support for PAI, PPI and Privacy Headers on the SIP Trunk of CUCME with Either SIP or SCCP Line-Side
Support for SIP 181 Call is Being Forwarded Message
Transport 802.1q and 802.1p Tags over ATM PVCs
Web Services Management Agent with TLS
Zone Based Firewall (ZBFW) Usability and Manageability Features
Important Notes for Cisco IOS Release 15.1(1)T
CISCO-RTTMON-MIB.oid Is Not Supported in the Universal IP Base IOS Technology Package
Class Calculated Percentage Rate Value
Features and Important Notes for Cisco IOS Release 15.1(1)T
Contents
These release notes describe the following topics:
New and Changed Information
This section lists the new hardware and software features supported by Cisco IOS Release 15.1M&T and contains the following subsections:
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New Hardware Features Supported in Cisco IOS Release 15.1(1)T5
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Note
New Hardware Features Supported in Cisco IOS Release 15.1(1)T5
There are no new hardware features in Cisco IOS Release 15.1(1)T5.
New Software Features Supported in Cisco IOS Release 15.1(1)T5
There are no new software features in Cisco IOS Release 15.1(1)T5.
New Hardware Features Supported in Cisco IOS Release 15.1(3)T3
There are no new hardware features in Cisco IOS Release 15.1(3)T3.
New Software Features Supported in Cisco IOS Release 15.1(1)T4
This section describes new and changed features in Cisco IOS Release 15.1(1)T4. Some features may be new to Cisco IOS Release 15.1(1)T4 but were released in earlier Cisco IOS software releases. Some features may have been released in earlier Cisco IOS software releases and have been changed in Cisco IOS Release 15.1(1)T4. To determine if a feature is new or changed, see the feature information table at the end of the feature module for that feature. Links to feature modules are included. If a feature does not have a link to a feature module, that feature is documented only in the release notes, and information about whether the feature is new or changed will be available in the feature description provided.
Right To Use Licensing Support in CLIs and MIBs for Cisco ISR G2 Platforms
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/routers/access/sw_activation/SA_on_ISR.html
New Hardware Features Supported in Cisco IOS Release 15.1(1)T1
This section describes new and changed features in Cisco IOS Release 15.1(1)T1. Some features may be new to Cisco IOS Release 15.1(1)T1 but were released in earlier Cisco IOS software releases. Some features may have been released in earlier Cisco IOS software releases and have been changed in Cisco IOS Release 15.1(1)T1. To determine if a feature is new or changed, see the feature information table at the end of the feature module for that feature. Links to feature modules are included. If a feature does not have a link to a feature module, that feature is documented only in the release notes, and information about whether the feature is new or changed will be available in the feature description provided.
1-Port and 2-Port VWIC3s—Voice WAN Interface Cards
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/routers/access/interfaces/software/feature/guide/vd-t1e1_vwic3.
htmlCisco Integrated Service Routers Generation 1 C-Series
Cisco IOS Release 15.1(1)T1 supports the Cisco 1841C, Cisco 2801C, Cisco 2811C, Cisco 2821C, Cisco 3825C, and Cisco 3845C integrated service routers generation 1 C-series. The following features are not supported on these routers:
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New Software Features Supported in Cisco IOS Release 15.1(1)T1
This section describes new and changed features in Cisco IOS Release 15.1(1)T1. Some features may be new to Cisco IOS Release 15.1(1)T1 but were released in earlier Cisco IOS software releases. Some features may have been released in earlier Cisco IOS software releases and have been changed in Cisco IOS Release 15.1(1)T1. To determine if a feature is new or changed, see the feature information table at the end of the feature module for that feature. Links to feature modules are included. If a feature does not have a link to a feature module, that feature is documented only in the release notes, and information about whether the feature is new or changed will be available in the feature description provided.
Voice Support on 1-Port and 2-Port HWICs
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/12_4/12_4x/12_4_11xw/fmt1e1ic_voice.html
New Hardware Features Supported in Cisco IOS Release 15.1(1)T
This section describes new and changed features in Cisco IOS Release 15.1(1)T. Some features may be new to Cisco IOS Release 15.1(1)T but were released in earlier Cisco IOS software releases. Some features may have been released in earlier Cisco IOS software releases and have been changed in Cisco IOS Release 15.1(1)T. To determine if a feature is new or changed, see the feature information table at the end of the feature module for that feature. Links to feature modules are included. If a feature does not have a link to a feature module, that feature is documented only in the release notes, and information about whether the feature is new or changed will be available in the feature description provided.
3G HSPA Enhancement
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/products/hw/routers/ps380/products_installation_and_configuration_guides_list.html
Cisco 1905 and Cisco 1921 Integrated Service Routers
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/routers/access/1900/hardware/installation/guide/1900_HIG.html
Cisco 3925E and Cisco 3945E Integrated Service Routers
The Cisco 3945E and Cisco 3925E offer new Services Performance Engines (SPEs), that are high-performance modular motherboards with a cryptographic accelerator, 4 onboard GE ports, 2 SFP slots, 3 EHWIC slots, 3 PVDM3 slots, and up to 350Mbps WAN Access with services. The Cisco 3945E and 3925E are shipped with Services Performance Engines (SPEs) pre-installed in the router, or are sold separately. The SPE250 and SPE200 provide a modular approach to system upgrades, because you can easily upgrade the SPE on a Cisco 3945 or Cisco 3925 for improved router performance.
The Cisco 3945E and Cisco 3925E provide highly scalable Security and UC/CUBE services and offer investment protection for customers who purchase a Cisco 3925 or Cisco 3945 today, providing an upgrade option for higher performance levels in the future when increased bandwidth demands require higher performance levels.
Cisco 888E
For detailed information about this feature, see the following documents:
http://www.cisco.com/en/US/docs/routers/access/800/860-880-890/hardware/installation/guide/860-880-890HIG.html
http://www.cisco.com/en/US/docs/routers/access/interfaces/software/feature/guide/GSHDSL_EFM_HWICS.html
Cisco Connected Grid Router 2000 Series
The Cisco Connected Grid Router 2010 (Cisco CGR 2010) router is a member of the Cisco Connected Grid Router 2000 Series family of routers.It is an especially rugged, high performance router that provides LAN and WAN connectivity, field replaceable parts, and feature upgrades through software licensing. The Cisco CGR 2010 is designed to withstand hostile environments while continuing to deliver the performance, availability, and reliability to scale mission-critical needs.
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/products/ps10977/products_installation_and_configuration_guides_list.html
Cisco Unified Communications 500 Series
The Cisco Unified Communications 500 Series is part of the Cisco Smart Business Communications System (SBCS). The Cisco UC 500 series is a unified communications solution for small businesses that provides voice, data, video, and security capabilities.
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/products/ps7293/tsd_products_support_series_home.html
Note
HWIC-1VDSL
The HWIC-1VDSL is used on the Cisco ISR G2 platforms to provide VDSL over POTs WAN connectivity. It can be installed on Cisco ISR G2 platforms, and the external RJ-11 port is connected to DSL line coming from VDSL2 supported DSLAM.
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/products/ps5949/tsd_products_support_series_home.html
HWIC-4SHDSL-E
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/routers/access/interfaces/software/feature/guide/GSHDSL_EFM_HWICS.html
New Software Features Supported in Cisco IOS Release 15.1(1)T
This section describes new and changed features in Cisco IOS Release 15.1(1)T. Some features may be new to Cisco IOS Release 15.1(1)T but were released in earlier Cisco IOS software releases. Some features may have been released in earlier Cisco IOS software releases and have been changed in Cisco IOS Release 15.1(1)T. To determine if a feature is new or changed, see the feature information table at the end of the feature module for that feature. Links to feature modules are included. If a feature does not have a link to a feature module, that feature is documented only in the release notes, and information about whether the feature is new or changed will be available in the feature description provided.
Call Home
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/chassis/callhome_asr1k.html
Call Restriction Regulations
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmelpcor.html
Cisco Unified Border Element Support for Configuring an Error Response Code upon an Out-of-Dialog OPTIONS Ping Failure
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/cube/configuration/guide/vb-gw-sipsip.html#wpxref97945
CME (Communications Manager Express) 8.0/SRST (Survivable Remote Site Telephony) 8.0
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/feature/guide/Cisco_Unified_IPPhones_69xx_Series.html#wp1072892
CME CSTA CTI Protocol Suite
For detailed information about this feature, see the following documents:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmecti.html
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/open/source/sdkgnusl.html
Compliance-Mode Cipher and Hash Selection for GET VPN Group Member
This feature allows Federal Information Processing Standards (FIPS) compliance and Common Criteria (CC) compliance by enabling Cisco Group Encrypted Transport VPN (GET VPN) group members to specify locally-acceptable cipher and hash algorithms for the key encryption keys (KEKs) and traffic encryption keys (TEKs) that they download from the key server. This feature is configured with the following commands:
client rekey encryption
client rekey hash
client transform-sets
For detailed information about these commands, see the following document:
http://www.cisco.com/en/US/docs/ios/security/command/reference/sec_book.html
DHCP Zero Touch
For detailed information about this feature, see the following documents:
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_cfg_wsma.html
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_cns_services_ps6441_TSD_Products_Configuration_Guide_Chapter.html
Direct Download from CCO Capability in Cisco IOS IPS
The Direct Download from CCO Capability in Cisco IOS IPS feature was introduced to allow an administrator to use the CLI to specify, download and upgrade new signatures posted for Cisco IOS directly from Cisco.com. An administrator can also configure the router through the CLI to receive future periodic signature downloads automatically to eliminate the manual maintenance efforts and costs of changing or tuning IPS signatures whenever a new IPS signature update is posted.
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/sec_data_plane/configuration/guide/sec_ips5_sig_fs_ue.html
DoD MLPP PBX1 Certification for CME
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmemlpp.html
DoD Secure Device Support for CME: Support STU/STE/IP STE with CME
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmebasic.html
EnergyWise Branch Routers
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/products/ps10538/tsd_products_support_configure.html
Enhanced Music on Hold
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmemoh.html#wp1022363
G.SHDSL Auto Pair Detect
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/routers/access/interfaces/software/feature/guide/shdslfm.html#wp1054629
IEEE 802.1ag—D8.1 Standard Compliant CFM, Y.1731 Multicast LBM/AIS/RDI/LCK, IP SLA for Ethernet
For detailed information about this feature, see the following documents:
http://www.cisco.com/en/US/docs/ios/cether/configuration/guide/ce_cfm-ieee.html
http://www.cisco.com/en/US/docs/ios/cether/configuration/guide/ce_cfm-ieee_y1731.html
IKEv2 Site-to-Site
IKEv2 is the supporting protocol for IP Security Protocol (IPsec) and is used for performing mutual authentication and establishing and maintaining security associations (SAs). IKEv2 supports crypto-map and tunnel protection based IKEv2 solutions and features such as Dynamic Multipoint VPN (DMVPN), IPsec Static Virtual Tunnel Interface (sVTI), and IPsec Dynamic Virtual Tunnel Interface (dVTI).
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_cfg_ikev2.html
IP SLAs Engine 3.0
The Auto IP SLAs feature in Cisco IOS IP Service Level Agreements (SLAs) Engine 3.0 enables you to define a single probe definition that can be combined with different collections of endpoints to create multiple operations, including operations for proactive threshold monitoring, and allows a source to auto-discover the endpoints of an IP SLAs Responder. IP SLAs Engine 3.0 also enables the active measurement of Quality of Service (QoS) performance.
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios-xml/ios/ipsla/configuration/15-1mt/sla-15-1mt-book.html
iSAC Codec Support
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/cube/configuration/guide/vb_book/vb_book.html
Key Replacement for Digitally Signed Cisco Software
The Key Replacement for Digitally Signed Cisco Software feature provides a mechanism to replace public keys on a Cisco router or switch that are used to verify the authenticity of the software image.
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/fundamentals/configuration/guide/cf_dgtly_sgnd_sw.html
Layer 2 Switch Port Manageability MIBs
The Layer 2 Ethernet Switching Interface BRIDGE-MIB is supported in the Cisco 1861 platform. The BRIDGE-MIB enables the user to know the Media Access Control (MAC) addresses and spanning tree information of the Ethernet switch modules. The user can query the MIB agent using the SNMP protocol and get the details of Ethernet switch modules such as MAC addresses of each interfaces and spanning protocol information.
The Bridge-MIB uses the following approaches to get the Layer 2 BRIDGE-MIB information:
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In the community string based approach, one community string is created for each VLAN. Based on the query, the respective VLAN MIB is displayed.
In the context based approach, the SNMP context mapping commands are used to display the values for the L2 interfaces information. Each VLAN is mapped to a context. When the user queries with a context, the MIB displays the data for that specific VLAN which is mapped to the context. In this approach, each VLAN is manually mapped to a context.
For more details to configure and retrieve the BRIDGE-MIB details, see the Release Notes and Technical Notes at:
http://www.cisco.com/en/US/docs/ios/15_0/15_0x/15_01_XA/rn1800xa.html#wp422468
http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094a9b.shtml#brgmib
LDAP Integration with Active Directory
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/sec_user_services/configuration/guide/sec_cfg_accountg.html
LDAP/AD Support for Authproxy
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/sec_user_services/configuration/guide/sec_cfg_authentifcn_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1001230
MLPP Support for Supplementary Services on SCCP Controlled Analog Endpoints
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/fxs/configuration/guide/fxshist.html
MPLS MTU Command for GRE Tunnels
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios-xml/ios/mp_l2_vpns/configuration/15-1mt/mp-any-transport.html
Parser Concurrency and Locking Improvements
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/fundamentals/configuration/guide/cf_config-lock.html
QoS Policing Support on Switched Virtual Interfaces (SVIs)
The police command was modified to include support for policing on Switched Virtual Interfaces (SVIs) for the Cisco1800, 2800, and 3800 series integrated services routers.
Reuse MAC for ATM RBE
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/atm/configuration/guide/atm_reuse_MAC_for_ATM_RBE.html
RFC4040 Based Clear Channel Codec Signaling with SIP
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/sip/configuration/guide/sip_cg-rfc_comply.html
RSA 4096-Bit Key Generation in SW Crypto Engine Support
The range value for the modulus keyword value for the crypto key generate rsa command is extended from 360 to 2048 bits to 360 to 4096 bits.
This change impacts the following Cisco documents:
http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_deploy_RSA_piki.html
http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_store_pki_cred.html
http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_cfg_mng_cert_serv.html
In the following document the crypto key generate rsa command was updated:
http://www.cisco.com/en/US/docs/ios/security/command/reference/sec_c4.html
Serviceability Support for SIP Dialer and Call Progress Analysis
Cisco IOS Release 15.1(1)T adds two command line interface (CLI) commands for Call Progress Analysis (CPA) monitoring and diagnostics:
test dsp cpa slot dsp message
This command enables or disables printing of CPA messages to the console or/and the syslog.
test dsp cpa slot dsp parameter
This command displays or resets CPA parameters.
SG3 Fax Support
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/fax/configuration/guide/vf_cfg_t38_fxrly.html
SIP—TLS/TCP and SRTP with SRST
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/firmware/8_5_3/english/release/notes/7900_853.html
SIP IPv6—ANAT Support
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmesystm.html
SSL VPN Phase-4 Features
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_ssl_vpn.html
SSLVPN DVTI Support
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/sec_secure_connectivity/configuration/guide/sec_ssl_vpn.html
Support for Dynamic Payload Type Interworking for DTMF and Codec Packets for SIP to SIP Calls
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/cube/configuration/guide/vb_10022.html
Support for Expires Timer Reset on Receiving or Sending SIP 183 Message
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/sip/configuration/guide/sip_cg-msg_tmr_rspns.html
Support for Interworking Between RSVP Capable and RSVP Incapable Networks
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/cube/configuration/guide/vb_10021.html
Support for MGCP 1.0 Call Control for SRTP on Cisco IOS Gateways
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/mgcp/configuration/guide/15_0/vm_15_0_book.html
Support for MIB to Report Call Volume and Call Rate Related Statistics on the Cisco Unified Border Element
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/cube/configuration/guide/vb-gw-roadmap.html
Support for Multiple Registrars on SIP Trunks on a Cisco Unified Border Element, on Cisco IOS SIP TDM Gateways, and on Cisco Unified Communications Manager Express
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/voice/sip/configuration/guide/sip_cg-multi-registrars.html
Support for PAI, PPI and Privacy Headers on the SIP Trunk of CUCME with Either SIP or SCCP Line-Side
Support for PAI, PPI, and Privacy Headers on the Cisco Unified CME SIP trunk. When enabled, Calling Number, Calling Name, and Privacy information is sent using PAI, PPI, and Privacy headers over the SIP trunk of Cisco Unified CME. This feature also enables interworking between the Remote-Party-ID (RPID) information contained in SIP line-side messages to PAI, PPI, and Privacy header information on the SIP trunk.
Support for SIP 181 Call is Being Forwarded Message
Support for SIP 181 Call is Being Forwarded message was added to Cisco IOS SIP TDM gateways and Cisco Unified Border Elements (Cisco UBEs). This feature is enabled by default. To disable this feature for all SIP 181 messages or for SIP 181 message either with or without SDP, see the block and voice-class sip block commands in the Cisco IOS Voice Command Reference at http://www.cisco.com/en/US/docs/ios/voice/command/reference/vr_book.html.
On the Cisco UBE, this feature also adds the ability to receive SIP 181 messages on one leg and send out SIP 183 messages on the other leg. For details about enabling this feature on a Cisco UBE, see the map resp-code and voice-class sip map resp-code commands in the Cisco IOS Voice Command Reference at http://www.cisco.com/en/US/docs/ios/voice/command/reference/vr_book.html.
Support for Stripping Off Progress Indication from Incoming ISDN Messages on SIP and H323 TDM Gateways
Support for stripping off progress indicator (PI) from incoming Q.931 CALL-PROCEEDING message on Cisco IOS SIP and H.323 gateways and on Cisco UBEs. Configuration of this feature determines whether an incoming Q.931 CALL-PROCEEDING message with a PI value results in a SIP 183 message or H.323 Progress message. This behavior allows interworking with third-party SIP and H.323 servers. For details about enabling this feature, see the progress_ind command in the Cisco IOS Voice Command Reference at http://www.cisco.com/en/US/docs/ios/voice/command/reference/vr_book.html.
Tcl UDP and VRF Support
The Tcl UDP and VRF feature provides support for UDP sockets. This feature also provides VRF support for all Tcl sockets, including both UDP and TCP sockets.
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_script_tcl.html
Transport 802.1q and 802.1p Tags over ATM PVCs
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/atm/configuration/guide/atm_trans_vlan-tags_dsl_links.html
Web Services Management Agent with TLS
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_cfg_wsma.html
Zone Based Firewall (ZBFW) Usability and Manageability Features
For detailed information about this feature, see the following document:
http://www.cisco.com/en/US/docs/ios/sec_data_plane/configuration/guide/sec_zone_polcy_firew.html
Important Notes
The following information applies to all releases of Cisco IOS Release 15.1(1)T.
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Cisco IOS Behavior Changes
Behavior changes describe the minor modifications to the way a device works that are sometimes introduced in a new software release. These changes typically occur during the course of resolving a software defect and are therefore not significant enough to warrant the creation of a stand-alone document. When behavior changes are introduced, existing documentation is updated with the changes described in this section.
Behavior changes are provided for the following releases:
Cisco IOS Release 15.1(1)T5
The following behavior changes are introduced in Cisco IOS Release 15.1(1)T5:
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Old Behavior: The RTP sequence number is not continuous from the origin until the end of a SIP call, including the time when the call is on hold.
New Behavior: The RTP sequence number is now continuous from the origin until the end of a SIP call.
Additional Information: http://www.cisco.com/en/US/docs/ios-xml/ios/voice/cube_sip/configuration/15-1mt/sip-to-sip_supplementary_services_for_session_border_controller.html
Cisco IOS Release 15.1(1)T4
The following behavior changes are introduced in Cisco IOS Release 15.1(1)T4:
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Old Behavior: A Crypto Export Restrictions Manager (CERM) license is reserved for every SSL or TLS session.
New Behavior: A CERM license is reserved only after the user logs in.
Additional Information:
Cisco IOS Release 15.1(1)T3
The following behavior changes are introduced in Cisco IOS Release 15.1(1)T3:
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Old Behavior: After a reload of a router, some or all of the BGP address families do not come up. This is because the router is receiving messages from a neighbor that the AFI or SAFI is not supported, and the router does not retry those AFIs. The output of show ip bgp all summary shows the address family in NoNeg or idle state, and it will never leave that state. Typical output looks like:
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
x.x.x.x 4 1 0 0 1 0 0 never (NoNeg)New Behavior: When the router receives a message that the AFI or SAFI is not supported, the router does not simply drop the rejected AFIs or SAFIs from subsequent OPEN messages. Instead, the router retries the AFI/SAFI within the existing OPEN message retry timing sequence, but with an exponential backoff (stopping at 10 minutes) applied to decisions about whether to include a particular AFI/SAFI in an OPEN message. The timing of OPEN messages is not changed. Successful negotiation of the AFI results in a reset of the backoff sequence for future attempts. Also, when a BGP connection collision occurs with a session in the ESTABLISHED state, BGP sends a CEASE notification on the newly opened connection, and a keepalive message on the old connection. The new connection is closed. If the old session was stale, the keepalive causes it to be closed. The neighbor will retry its OPEN message after receiving the CEASE message and waiting a few seconds.
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Old Behavior: No error message is generated when BGP neighbors are configured with both an IPv6 address and MPLS send labels (via the neighbor send-label command or via a template). Sending MPLS labels to IPv6 peers is not supported.
New Behavior: An error message is generated when BGP neighbors are configured with both an IPv6 address and MPLS send labels. An example of the error message is:
"%BGP-4-BGP_LABELS_NOT_SUPPORTED: BGP neighbor 2001:DB8:1::2 does not support sending labels."•
Old Behavior: The summary address is advertised to the peer if the administrative distance is configured as 255.
New Behavior: The summary address is not advertised to the peer if the administrative distance is configured as 255.
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Old Behavior: When a host behind a zone-based policy firewall disconnectes ungracefully and loses the TCP connection information, TCP keepalive sessions are terminated on the other endpoint after the TCP keepalive times out.
New Behavior: When a zone-based policy firewall is enabled for TCP keepalive traffic and the host behind the firewall is undergoing an ungraceful disconnect, TCP keepalive works only when the configured TCP timeout is complete. On receiving an out of window reset (RST) packet, the firewall sends an empty acknowledge (ACK) packet to the initiator of the RST packet. This ACK will have the current sequence (SEQ) and ACK number from the firewall session. On receiving this ACK, the client sends an RST packet with the SEQ number that is equal to the ACK number in ACK packet. The firewall processes this RST packet, clears the firewall session, and passes the RST packet.
Additional Information:
http://www.cisco.com/en/US/docs/ios/sec_data_plane/configuration/guide/sec_zone_polcy_firew.html
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Old Behavior: Destination-only traffic classes cannot be controlled when more than one protocol is operating at the border routers.
New Behavior: Destination-only traffic classes can be controlled when more than one protocol is operating at the border routers using dynamic PBR.
Additional Information:
http://www.cisco.com/en/US/docs/ios-xml/ios/pfr/command/pfr-cr-book.html
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Old Behavior: GigabitEthernet0/3/0 is up, line protocol is down.
New Behavior: GigabitEthernet0/3/0 is down, line protocol is down.
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Old Behavior: The output for the show controller shdsl command for the HWIC- 4SHDSL-E shows the line coding as AUTO-TCPAM when Annex F and G are selected, and loss of sync as LOSWAS.
New Behavior: The output for the show controller shdsl command for the HWIC- 4SHDSL-E shows the line coding as 16-TCPAM or 32-TCPAM depending on which TCPAM is used to train lines when Annex F and G are selected, and loss of sync as LOSW.
Additional Information:
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Old Behavior: The always keyword was not available for the ignore crc command.
New Behavior: The ignore crc command can use the always keyword to always ignore CRC errors.
Additional information:
http://www.cisco.com/en/US/docs/ios/bbdsl/command/reference/bba_book.html
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Old Behavior: There is no command to configure Network Time Protocol (NTP) to reject time updates greater than the panic threshold of 1000 seconds.
New Behavior: A new command, ntp panic update, is introduced to configure NTP to reject time updates greater than the panic threshold of 1000 seconds. If the ntp panic update command is configured and the received time updates are greater than the panic threshold of 1000 seconds, the time update is ignored and the following console message is displayed:
NTP Core (ERROR): time correction of -22842. seconds exceeds sanity limit 1000. seconds; set clock manually to the correct UTC time.Additional Information:
http://www.cisco.com/en/US/docs/ios/netmgmt/command/reference/nm_10.html
Cisco IOS Release 15.1(1)T2
The following behavior changes are introduced in Cisco IOS Release 15.1(1)T2:
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Old Behavior: By default, polarity detection is enabled for 10 Mbps full-duplex links on Integrated Services Router Generation 2 (ISR G2) platforms. With connection to some network equipment over a 10 Mbps full-duplex link, the polarity detection feature can cause cyclic redundancy check (CRC) errors. There is no CLI command to disable this feature.
New Behavior: By default, the polarity detection feature is disabled for 10 Mbps full-duplex links on ISR G2 platforms. Use the rj45-auto-detect-polarity {enable | disable} command to enable or disable polarity detection.
Additional Information: http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_o1.html#wp1067169
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Old Behavior: In the ip nat service command, the tcp keyword used along with the sip keyword was used to enable the TCP SIP NAT ALG functionality.
New Behavior: The tcp keyword used along with the sip keyword in the ip nat service command is removed. The TCP SIP NAT ALG functionality is disabled by default.
Additional Information: http://www.cisco.com/en/US/docs/ios/ipaddr/command/reference/iad_nat.html#wp1049948
Cisco IOS Release 15.1(1)T1
The following behavior changes are introduced in Cisco IOS Release 15.1(1)T1:
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Old Behavior: DHCP server does not send infinite lease time to the clients for which manual bindings are configured.
New Behavior: DHCP server sends infinite lease time to the clients for which manual bindings are configured.
Additional Information: http://www.cisco.com/en/US/docs/ios/ipaddr/configuration/guide/iad_dhcp_svr_cfg.html
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Old Behavior: The ip nat service CLI included the enable-mib keyword
New Behavior: The enable-mib keyword has been deprecated from the ip nat service CLI.
Additional Information: http://www.cisco.com/en/US/docs/ios/ipaddr/command/reference/iad_nat.html#wp1049948
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Old Behavior: The cns config notify command was supported.
New Behavior: The cns config notify command will be hidden and not supported effective with Cisco IOS Release 15.1(1)T1.
Additional Information: http://www.cisco.com/en/US/docs/ios/netmgmt/command/reference/nm_04.html#wp1083435
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Old Behavior: BGP selects paths which are not the oldest paths for multipath. This causes BGP to unnecessarily flap from multipath to non-multipath as a result of route flaps
New Behavior: BGP uses the best-path selection algorithm to find a set of equally good routes. These routes are the potential multipaths. In Cisco IOS Release 12.2(33)SRD and later releases, when there are more equally good multipaths available than the maximum permitted number, then the oldest paths are selected as multipaths.
Additional Information: http://www.cisco.com/en/US/docs/ios/iproute_bgp/configuration/guide/irg_external_sp.html
http://www.cisco.com/en/US/docs/ios/iproute_bgp/configuration/guide/irg_overview.html
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Old Behavior: When a connected route is automatically summarized by the auto-summary (BGP) command, the route is not deleted from the BGP routing table if the interface assigned that address is shut down.
New Behavior: When a connected route is automatically summarized by the auto-summary (BGP) command, the route is properly deleted from the BGP routing table if the interface assigned that address is shut down.
For more information, see the auto-summary (BGP) command: http://www.cisco.com/en/US/docs/ios/iproute_bgp/command/reference/irg_bgp1.html
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Old Behavior: Command accounting and command authorization that include a 4-byte ASN number are sent in the same format that is used on the command-line interface.
New Behavior: Command accounting and command authorization that include a 4-byte ASN number are sent in the asplain notation irrespective of the format that is used on the command-line interface.
Additional Information:
http://www.cisco.com/en/US/docs/ios/iproute_bgp/command/reference/irg_bgp3.html
http://www.cisco.com/en/US/docs/ios/iproute_bgp/command/reference/irg_bgp4.html
http://www.cisco.com/en/US/docs/ios/ipv6/command/reference/ipv6_10.html
http://www.cisco.com/en/US/docs/ios/ipv6/command/reference/ipv6_11.html
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Old Behavior: Dynamic entries in the multicast table are not cleared even though the hold time has expired and the ip nhrp map multicast dyn command is disabled, which disables the automatic addition of routers to the multicast mappings by NHRP.
New Behavior: All dynamic entries in the multicast table are now cleared when the hold time has expired and the ip nhrp map multicast dyn command is disabled.
Additional Information: http://www.cisco.com/en/US/docs/ios/ipaddr/command/reference/iad_nhrp.html#wp1011428
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Old Behavior: Each errored packet in the input error counter can report multiple errors, such as CRC, framing, and abort.
New Behavior: Each errored packet in the input error counter reports only one specific error.
Additional Information: The following modules are affected:
WIC-1T,
WIC-2T,
WIC-2A/S,
HWIC-1T,
HWIC-2T,
HWIC-2A/S,
VWIC-xMFT-T1 (or E1),
VWIC2-xMFT-T1/E1,
WIC-1DSU-T1-V2,
HWIC-1DSU-T1,
WIC-1B-U-V2,
WIC-1B-S/T-V3,
HWIC-1B-U (12.4 mainline only),
WIC-xAM,
WIC-xAM-V2
The HWIC and WIC slots in the following platforms are affected:
Cisco 1841
Cisco 2691
Cisco 2801
Cisco 2811, Cisco c2821,Cisco c2851
Cisco 3725, Cisco 3745
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Old Behavior: When cooperative key server key distribution occurs, one KS declares itself as the primary KS, creates a policy, and sends out the policy to the other secondary KS. The secondary KS continues to wait before declaring the primary KS as the primary KS and continues to stay in election mode, but since both the primary and secondary KS have a policy, the GM registration succeeds.
New Behavior: When cooperative key server key distribution occurs, one KS declares itself as primary, creates a policy, and sends the policy to the other secondary KS. The secondary KS declares the primary KS as primary KS when it gets the policy and ends the election mode. The secondary KS now also blocks GM registration while the cooperative key server key distribution is in progress. This change allows the cooperative key server distribution to become more efficient because it saves time. For example, the following syslog warning message is displayed:
00:00:16: %GDOI-5-COOP_KS_BLOCK_NEW_GM_REGISTER_ELECTION: This KS temporarily blocks GM with ip-addr 10.0.4.1 from registering in group diffint as the KS election is underwayAdditional Information: The Cooperative Key Server section in the Cisco Group Encrypted Transport VPN feature document was updated to reflect this change:
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Old Behavior: DSL group did not have auto configuration options. Only manual configuration was allowed.
New Behavior: DSL group provides auto configuration options such as default, exit, no, and shdsl.
Additional Information: http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_d1.html#wp1039345
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Old Behavior: Only three types of audio relay methods were supported in the dtmf-relay command under voice register pool.
New Behavior: SIP-KPML option is added as the fourth type of audio relay method in the dtmf-relay command under voice register pool in Cisco Unified CME and Cisco Unified SRST.
Additional information: http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/command/reference/cme_d1ht.html#wp1048382
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Old Behavior: Error message is not displayed when you try applying the tunnel interface to a crypto map using the crypto map (interface IPSec) command.
New Behavior: An error message is displayed when you try applying the tunnel interface to a crypto map using the crypto map (interface IPSec) command.
Additional Information: http://www.cisco.com/en/US/docs/ios/security/command/reference/sec_c4.html#wp1060970
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Old Behavior: The Right to Use license is not available for technology packages and all features on Cisco ISR G2 platforms.
New Behavior: The Right to Use license is available for technology packages and all features on Cisco ISR G2 platforms, except for the HSEC feature. Use the license accept end user agreement command in global configuration mode to configure a one-time acceptance of the Cisco End User License Agreement (EULA) for all Cisco IOS software packages and features.
Additional Information: http://www.cisco.com/en/US/docs/routers/access/sw_activation/SA_on_ISR.html
Important Notes for Cisco IOS Release 15.1(1)T
This section describes important issue that you should be aware of for Cisco IOS Release 15.1(1)T and later releases.
CISCO-RTTMON-MIB.oid Is Not Supported in the Universal IP Base IOS Technology Package
The Cisco IP Service Letter Agreements (SLAs) responder on a Cisco 2900 series Integrated Service Router (ISR) with the universal ipbasek9 technology package operates as expected. However, any attempt to utilize snmpset or snmpget to retrieve the CiscoRttMonMIB (.1.3.6.1.4.1.9.9.42) module instance identifiers (OIDs) will fail (issuing the show snmp mib | include rttMonApplResponder command displays an empty list).
To provide support for snmpset or snmpget and the CISCO-RTTMON-MIB on a Cisco ISR Generation 2 (G2), activate an evaluation license for one of the following technology packages on the Cisco ISR G2: datak9, securityk9, or uck9. Note that evaluation licenses automatically become Right to Use licenses after the initial evaluation period.
Additional Information:
Software Activation on Cisco Integrated Services Routers and Cisco Integrated Service Routers G2
Class Calculated Percentage Rate Value
Cisco IOS software ensures that a class's calculated percentage rate value is valid before associating it with an interface.
Old Behavior: When a class with bandwidth, priority, or shape is associated with an interface, Cisco IOS software does not check the class's calculated percentage rate value.
New Behavior: When a class with bandwidth or priority is associated with an interface, Cisco IOS software checks the class's calculated percentage rate value. The value must be between 8 and 2,000,000 kbps. When a class with shape is associated with an interface, Cisco IOS software checks the class's calculated percentage rate value. The value must be between 8,000 and 1,000,000,000 bps. If the values are outside of these ranges, Cisco IOS software does not allow the class to be associated with the interface.
Additional Information:
http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_a1.html#wp1011774
http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_n1.html#wp1048842
http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_s1.html#wp1060033
