Sso Aware Hsrp - Cisco Catalyst 4500 Series Configuration Manual

Layer 3 Software Features
that guide are supported in your software release. Use Cisco Feature Navigator to find information about
platform support and Cisco software image support. To access Cisco Feature Navigator, go to
http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
HSRP—Hot Standby Router Protocol
http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_hsrp.html
HSRP MD5 Authentication
http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_hsrp.html
HSRP Support for ICMP Redirects
http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_hsrp.html
IP Precedence Accounting
http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_ipserv.html
ISSU—HSRP
http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_hsrp.html
SSO—HSRP
http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_hsrp.html

SSO Aware HSRP

SSO Aware HSRP offers continuous data packet forwarding during a supervisor engine switchover
without a path change to the standby HSRP router. During supervisor engine switchover, NSF with SSO
continues forwarding data packets along known routes using the HSRP virtual IP address. When both
supervisor engines fail on the active HSRP router, the standby HSRP router takes over as the active
HSRP router. It further extends reliability and availability offered by the NSF with SSO to Layer 3. SSO
aware HSRP is available for Supervisor Engine IV, V, and V-10GE on Catalyst 4507R and 4510R chassis
with supervisor redundancy.
IP Routing Protocols
The following routing protocols are supported on the Catalyst 4500 series switch:
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Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
1-14
BGP, page 1-15
EIGRP, page 1-15
IS-IS, page 1-16
OSPF, page 1-16
RIP, page 1-16
Chapter 1 Product Overview
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