63-6
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 63 Support for IPv6
About IPv6
IP Routing: Protocol-Independent Configuration Guide, Cisco IOS XE Release 3S
First-Hop Redundancy Protocols
IPv6 routing protocols ensure router-to-router resilience and failover. However, in situations in which
the path between a host and the first-hop router fails, or the first-hop router itself fails, First-Hop
Redundancy Protocols (FHRPs) ensure host-to-router resilience and failover.
The Hot Standby Router Protocol (HSRP) protects data traffic in case of a gateway failure.
You can find more information about First-Hop Redundancy Protocols at:
First Hop Redundancy Protocols Configuration Guide, Cisco IOS Release 15E
First Hop Redundancy Protocols Configuration Guide, Cisco IOS XE Release 3E
Unicast Routing
These sections describe the IPv6 unicast routing protocol features supported by the switch:
• RIP, page 63-6
• OSPF, page 63-6
• EIGRP, page 63-6
• IS-IS, page 63-7
• Multiprotocol BGP, page 63-7
RIP
Routing Information Protocol (RIP) for IPv6 is a distance-vector protocol that uses hop count as a
routing metric. It includes support for IPv6 addresses and prefixes and the all-RIP routers multicast
group address FF02::9 as the destination address for RIP update messages.
You can find more about RIP at this location:
IP Routing: RIP Configuration Guide, Cisco IOS XE Release 3E
OSPF
The switch running the IP services feature set supports Open Shortest Path First (OSPF) for IPv6, a
link-state protocol for IP.
You can find more information about OSPF at this location:
IP Routing: OSPF Configuration Guide, Cisco IOS Release 15E
IP Routing: OSPF Configuration Guide, Cisco IOS XE Release 3E
EIGRP
The switch running the IP-services feature set supports Enhanced Interior Gateway Routing Protocol
(EIGRP) for IPv6. It is configured on the interfaces on which it runs and does not require a global IPv6
address.
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