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These release notes describe the following topics:
There are no new hardware features in Cisco IOS Release 15.4(3)S1.
There are no new software features in Cisco IOS Release 15.4(3)S1.
There are no new hardware features in Cisco IOS Release 15.4(3)S.
This section describes new and changed features in Cisco IOS Release 15.4(3)S. Some features may be new to Cisco IOS Release 15.4(3)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 15.4(3)S. Links to feature modules are included. If a feature listed does not have a link to a feature module, that feature is documented only in the release notes.
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/auto_net/configuration/15-s/an-auto-net-15-s-book/an-auto-net-infra.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_pim/configuration/15-s/imc-pim-15-s-book/imc_bfdpim.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/15-s/irg-15-s-book/irg-4byte-asn.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/15-s/irg-15-s-book/irg-max-prefix.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cether/configuration/15-s/ce-15-s-book/ce-cfm-nsnhsby.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_0101111.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-s/fhp-15-s-book/HSRP-Version-2.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-s/fhp-15-s-book/HSRP-Global-IPv6-Address.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-s/iro-15-s-book/ip6-route-ospfv3-auth-ipsec.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_rip/configuration/15-s/irr-15-s-book/ip6-rip.html
For detailed information about this feature, see the following document:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_data_acl/configuration/15-s/sec-data-acl-15-s-book/ip6-acls.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-s/sla-15-s-book/sla_twamp.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/15-s/irg-15-s-book/vrf-aware-bgp-translate-update.html
For detailed information about this feature, see the following document:
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-s/fhp-15-s-book/VRRPv3-Protocol-Support.html
For detailed information about hardware and software features supported on Cisco 7600 Series Routers in Cisco IOS Release 15.4(3)S, see the following document:
http://www.cisco.com/c/en/us/support/routers/7600-series-routers/products-release-notes-list.html
For detailed information about hardware and software features supported on Cisco ASR 901 Series Routers in Cisco IOS Release 15.4(3)S, see the following document:
http://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Release/Notes/asr901_rn_15_4_3_S.html
For detailed information about hardware and software features supported on Cisco ASR 901 S Series Routers in Cisco IOS Release 15.4(3)S, see the following document:
http://www.cisco.com/c/en/us/td/docs/wireless/asr_901s/rn/b_rn_for_asr901s_15_4_3s.html
For detailed information about hardware and software features supported on Cisco ME 3600x and Cisco ME 2600x Series Ethernet Switches in Cisco IOS Release 15.4(3)S, see the following document:
http://www.cisco.com/c/en/us/support/switches/me-3600x-series-ethernet-access-switches/products-release-notes-list.html
http://www.cisco.com/c/en/us/support/switches/me-2600x-series-ethernet-access-switches/products-release-notes-list.html
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 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 email to cco-locksmith@cisco.com. An automatic check will verify that your email address is registered with Cisco.com. If the check is successful, account details with a new random password will be emailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:
The following sections contain important notes about Cisco IOS Release 15.4S: