Features and Important Notes for Cisco IOS Release 15.1(2)S

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 15.1(2)S and contains the following subsections:

New Hardware Features in Cisco IOS Release 15.1(2)S

This section describes new and changed features in Cisco IOS Release 15.1(2)S. Some features may be new to Cisco IOS Release 15.1(2)S 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(2)S. 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.

GLC-SX-MMD and GLC-LH-SMD for 1GE SPA and Supervisor Ports

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/Hardware/15_0s/7600_hwd.html

XFP10GLR-192SR-L and XFP10GER-192IR-L 10GE XFP MAC on All ES 10GE, ES+ 10GE, ES+T 10GE,
and 10GE SPAs

For detailed information about this feature, see the documents at the following URLs:

http://www.cisco.com/en/US/docs/routers/7600/Hardware/15_0s/7600_hwd.html

http://www.cisco.com/en/US/docs/routers/7600/Hardware/
Module_and_Line_Card_Installation_Guides/ES40_Line_Card_Installation_Guide/es40_chap2.html

New Software Features in Cisco IOS Release 15.1(2)S

This section describes new and changed features in Cisco IOS Release 15.1(2)S. Some features may be new to Cisco IOS Release 15.1(2)S 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(2)S. 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.

BFD—BFD Hardware Offload Support

For detailed information about this feature, see the documents at the following URLs:

http://www.cisco.com/en/US/docs/ios/iproute_bfd/configuration/guide/irb_bfd.html

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.html

BFD—Client Grouping for IPv4 Static Routes (IP Core Dev)

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/iproute_bfd/configuration/guide/irb_bfd.html

BFD—RIPv2 Support

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/iproute_rip/configuration/guide/irr_bfd_ripv2.html

BFD Scale Improvement on the ES+ Line Card for the Cisco 7600

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.html

BGP—Consistency Checker

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/iproute_bgp/configuration/guide/irg_consistency_check.html

BGP IPv6 Client for Single Hop BFD

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/iproute_bgp/configuration/guide/irg_neighbor.html

BGP IPv6 PIC Edge and Core for IP/MPLS

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-mptcl_bgp.html

Callhome Message Using Dedicated Interface

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.
html#wp1607509

CFM Extension for 1+1 Hot-Standby Support

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/cether/configuration/guide/ce_cfm_nsnhsby.html

Circuit Emulation Service over UDP

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/interfaces_modules/shared_port_adapters/configuration/7600series/76ovwcep.html

Cisco IOS Shell

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_ios_shell.html

CoPP on Nonaccess Subinterfaces

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.html

DHCPv6 Relay—MPLS VPN Support

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-dhcp.html

DHCPv6 Server PD VRF Aware

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-dhcp.html

Egress QoS Scheduling for Port-Channel Interfaces

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap7.html

EIGRP/SAF HMAC-SHA-256 Authentication

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/iproute_eigrp/configuration/guide/ire_cfg_eigrp.html

Embedded Event Manager 3.2

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_eem_3.2.html

IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731)

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios-xml/ios/ipsla/configuration/15-1s/
Configuring_IP_SLAs_Metro-Ethernet_3.0_ITU_T_Y.1731_Operations.html

IP Source Guard for Service Instance

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.html

IP Tunnels L3VPN over mGRE MPLS MTU Support

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_mtu_cmd_changes.html

ISIS IPv4 Loop-Free Alternate Fast Reroute

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/iproute_isis/configuration/guide/irs_ipv4_lfafrr.html

L2 and L3 QoS ACL Classification for EVC on ES+

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap7.html

L3QoS Support on CEoP SPAs

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/ios/15S/configuration/guide/7600_15_0s_book.html

MFI Work for IP FRR

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios-xml/ios/mp_l2_vpns/configuration/15-1s/mp-any-transport.html

MIB Support for 1588v2 and SynchE

The IEEE Standard PTPv2 1588-2008 defines a protocol that enables precise synchronization of clocks in measurement and control systems implemented with packet-based networks. This MIB supports the Precision Timing Protocol version 2 (PTPv2) feature of Cisco System devices.

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use the Cisco MIB Locator found at the following URL:

http://tools.cisco.com/ITDIT/MIBS/servlet/index

OSPF Support for NSSA RFC 3101

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/iproute_ospf/configuration/guide/iro_cfg.html

REP MIB

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/technical_references/7600_mib_guides/
MIB_Guide_ver_6/mibgde6.html

RTP Metrics Support for Cisco 7600 Inline Video Monitoring

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap13.
html#wp1517497

SPAN on EVC Service Instance

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.html

SSO Support for REP FH

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap4.
html#wp1607509

Support PPPoE Encapsulation for Cisco 7600 Inline Video Monitoring

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap13.
html#wp1517497

Support Switch-Port Interfaces for Cisco 7600 Inline Video Monitoring

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap13.
html#wp1517497

SyncE Timing Services MIB

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/interface/configuration/guide/ir_synce.html

Virtual Transponder on Cisco the 7600 IPoDWDM Line Card

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/es40_chap10.html

Y.1731 Performance Monitoring

For detailed information about this feature, see the document at the following URL:

http://www.cisco.com/en/US/docs/ios/cether/configuration/guide/ce_y1731-perfmon.html

MIBs

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use the Cisco MIB Locator found at the following URL:

http://tools.cisco.com/ITDIT/MIBS/servlet/index

If the Cisco MIB Locator does not support the MIB information that you need, you can also obtain a list of supported MIBs and download MIBs from the Cisco MIBs page at the following URL:

http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

To access the Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:

http://tools.cisco.com/RPF/register/register.do

Important Notes

The following sections contain important notes about Cisco IOS Release 15.1S.

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 standalone document. When behavior changes are introduced, existing documentation is updated with the changes described in these sections:

Cisco IOS Release 15.1(2)S2

The following behavior changes were introduced in Cisco IOS Release 15.1(2)S2:

  • Change is made to neighbor prefix-length-size command.

Old Behavior: When the neighbor prefix-length-size command is configured in the L2VPN VPLS address family, if that neighbor has a peer policy or route map that is removed, the neighbor prefix-length-size command setting is also removed.

New Behavior: When the neighbor prefix-length-size command is configured in the L2VPN VPLS address family, the value of that command overrides the value set for the peer-group. If the command is locally configured for the peer, it will not be inherited from the peer-group.

  • Change is made in show bgp ipv4 unicast summary command.

Old Behavior: The show bgp ipv4 unicast summary command displays an incorrect number of dynamically created neighbors per address family if a peer-group has been removed from the configuration.

New Behavior: The show bgp ipv4 unicast summary command displays the correct number of dynamically created neighbors, even if a peer-group has been removed. The output displays the number of dynamically created neighbors per address family, and at the end of output, displays the total number of dynamically created neighbors on the router.

  • State of MLP bundles is not synced to standby after SPA OIR.

Old Behavior: Prior to RLS10/SRE4 release, the SPA-1xCHOC12/DS0 SPA boots up with the old controller status. If it was not admin down, it will start with no admin down and interfaces comes up as soon as the spa boots up.

New Behavior: Effective from Cisco IOS Release 15.1(3)S and 12.2(33)SRE5, the SPA-1xCHOC12/DS0 boots up with admin down status and the original SPA status is restored after one second of the SPA bootup. Wait for a second after the log message “SPA_OIR-6-ONLINECARD: SPA (SPA-1XCHOC12/DS0) online in subslot” is displayed to configure the SPA.

Additional Information

http://www.cisco.com/en/US/docs/interfaces_modules/shared_port_adapters/configuration/
7600series/76ovwser.html

  • BFD for pseudowire VCCV does not support UDP with MPLS-TP.

Old Behavior: Bidirectional Forwarding Detection (BFD) for Pseudowire Virtual Circuit Connectivity Verification (VCCV) does not support User Datagram Protocol (UDP).

New Behavior: When BFD for Pseudowire VCCV is used, Cisco IOS incorrectly advertises support for User Datagram Protocol (UDP) encapsulation, even if you specify the vccv bfd template name raw-bfd command. Only PW-ACH (raw) encapsulation is supported. This could cause interoperability issues if the peer attempts to use UDP encapsulation. Cisco IOS-IOS connectivity is not affected. Further, the udp keyword for the vccv bfd template command has no effect. Only raw BFD is used.

Cisco IOS Release 15.1(2)S1

The following behavior changes were introduced in Cisco IOS Release 15.1(2)S1:

  • Input service policies are not implemented for PPPoE client traffic.

Old Behavior: Input service policies attached to a main interface or a subinterface are not implemented for PPPoE client traffic. Only input service policies attached to a dialer interface are implemented.

New Behavior: Input service policies attached to a main interface or a subinterface are implemented for PPPoE client traffic but only if an input service policy is not configured for a dialer interface. If an input service policy is configured for a dialer interface, the old behavior is retained. Only the quality of service (QoS) counters for packet classification are supported. Counters for packet dropping, packet marking, and policing actions are not supported and are ignored.

  • BGP no longer activates IPv6 peers in IPv4 address family automatically.

Old Behavior: By default, both IPv6 and IPv4 capability is exchanged with a BGP peer that has an IPv6 address. When an IPv6 peer is configured, that neighbor is automatically activated under the IPv4 unicast address family.

New Behavior: Starting with new peers being configured, an IPv6 neighbor is no longer automatically activated under the IPv4 address family. You can manually activate the IPv6 neighbor under the IPv4 address family if you want. If you do not want an existing IPv6 peer activated under the IPv4 address family, you can manually deactivate the peer with the no neighbor ipv6-address activate command. Until then, existing configurations that activate an IPv6 neighbor under the IPv4 unicast address family will continue to try to establish a session.

http://www.cisco.com/en/US/docs/ios/iproute_bgp/configuration/guide/irg_basic_net.html

  • Routing protocols purge routes when an interface goes down.

Old Behavior: Routing protocols do not purge routes when an interface goes down. This is the default behavior.

New Behavior: Routing protocols purge routes when an interface goes down. This is the default behavior.

Additional Information: http://www.cisco.com/en/US/docs/ios/iproute_pi/command/reference/iri_pi1.html#wp1013065

  • Bidirectional Forwarding Detection (BFD) changes to the CLI. New client name is in CLI output of the show bfd neighbors detail and show bfd neighbors client commands.

Old Behavior: The client name “xconnect” appears in the show bfd neighbors command output.

New Behavior: The “xconnect” client name is replaced with “AToM” in the show bfd neighbors command output.

Additional Information: http://www.cisco.com/en/US/docs/ios/iproute_pi/command/reference/iri_book.html

  • Disable ISG on ES+ lowQ line card.

Old Behavior: No restrictions were present in the ES+ Configuration guide.

New Behavior: Updated the documentation with “ES+ low queue cards do not support ISG (IP session and PPPoE session)” note.

Additional Information:

http://www.cisco.com/en/US/docs/routers/7600/install_config/
ES40_config_guide/es40_chap4.html#wp1554396

  • LAG support is extended on access port channel subinterface

Old Behavior: We can add only two members to the port-channel access type subinterface.

New Behavior: We can add multiple members to the port-channel access type subinterface if the ISG is not configured.

Additional Information: http://www.cisco.com/en/US/docs/routers/7600/install_config/ES40_config_guide/
es40_chap4.html#wp1554373

  • Policies with service fragment classes are allowed on all Ethernet main interface types. Policies with fragment classes are allowed on all Ethernet subinterfaces and port-channel subinterfaces.

Old Behavior: You cannot use mod3/mod4 policies with service fragments and/or fragment classes on Ethernet interface types other than Gigabit Ethernet and port-channel.

New Behavior: You can use mod3/mod4 policies with service fragments and/or fragment classes on all Ethernet interface types.

Additional Information: http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/qos_policies_agg.html

Deferrals

Cisco IOS software images are subject to deferral. Cisco recommends that you view the deferral notices at the following location to determine if your software release is affected:

http://www.cisco.com/en/US/products/products_security_advisories_listing.html

Field Notices and Bulletins