© 2006 Cisco Systems, Inc. All rights reserved.IP6FD v IPv6-Enabled Routing Protocols Routing with RIPng

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v RIPng for IPv6 Same as IPv4: Distance vector Radius of 15 hops Split horizon, poison reverse, and so on UDP port 521 Based on RIPv2

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v RIPng for IPv6 (Cont.) Updated RIPng features for IPv6: IPv6 prefix, next-hop IPv6 link-local address, next-hop interface Uses the all-RIP-routers multicast group, FF02::9, as the destination address for RIP updates Uses IPv6 for transport Enabled per-interface, not per-network

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v Originates the default route (::/0) from an interface ipv6 router rip router(config)# Creates and enters RIP router submode redistribute static | bgp | rip router(config-rtr)# Redistributes routes from other routing processes ipv6 rip default-information originate router(config-if)# ipv6 rip enable router(config-if)# Configures RIP on an interface Cisco IOS RIPng Commands

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v Displays RIP packets sent and received show ipv6 rip router# Displays status of the various RIP processes show ipv6 rip database router# Displays the RIP database debug ipv6 rip router# show ipv6 route rip router# Shows RIP routes in the IPv6 route table Cisco IOS RIPng Commands (Cont.)

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v LAN1: 2001:db8:1:1::/64 LAN2: 2001:db8:1:2::/64 Ethernet0 Ethernet1 Ethernet0 = fe80::260:3eff:fe47:1530 Multicast All-RIP-Routers Link-Local Source Address Router2# interface Ethernet0 ipv6 address 2001:db8:1:1::/64 eui-64 ipv6 rip RT0 enable ipv6 rip RT0 default-information originate Router2# debug ipv6 rip RIPng: Sending multicast update on Ethernet0 for RT0 src=FE80::260:3eff:fe47:1530 dst=FF02::9 (Ethernet0) sport=521, dport=521, length=32 command=2, version=1, mbz=0, #rte=1 tag=0, metric=1, prefix=::/0 Cisco IOS RIPng Configuration Example Router2 ::/0 Router1

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v interface Ethernet0 ipv6 address 2001:db8:1:1::/64 eui-64 ipv6 rip RT0 enable Interface Ethernet1 ipv6 address 2001:db8:1:2::/64 eui-64 ipv6 rip RT0 enable Cisco IOS RIPng Configuration Example (Cont.) LAN1: 2001:db8:1:1::/64 LAN2: 2001:db8:1:2::/64 Ethernet0 Ethernet1 Router2 ::/0 Router1

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v Summary RIPng for IPv6 retains the key features of RIPv2 for IPv4, including support for split horizon and poison reverse to prevent routing loops. RIPng has been enhanced for IPv6 through the use of an RIP routers multicast address for routing updates and link-local addresses for the next-hop interface. RIPng is configured per-interface on Cisco routers and requires the use of a unique route tag to identify the routing process.

© 2006 Cisco Systems, Inc. All rights reserved. IP6FD v2.04-9