RIPng for IPv6
RIPng is the IPv6 of RIP and is defined in RFC 2080. Like RIPv2 for IPv4,
RIPng is a distance vector routing protocol that uses a hop count for its
metric and has a maximum hop count of 15. RIPng also uses periodic multicast
updates—every 30 seconds—to advertise routes. The multicast address
is FF02::9.
RIPng is not on the BSCI exam at present, but it is presented here for
completeness and to round out your appreciation for IPv6 routing and to
prepare the reader for trial implementations of IPv6.
There are two important differences between the old RIP and the next-generation
RIP. First, RIPng supports multiple concurrent processes, each identified
by a process number (this is similar to OSPFv2). Second, RIPng is
initialized in global configuration mode and then enabled on specific interfaces.
Example 8-3 shows the syntax used to apply RIPng to a configuration.
Notice that the syntax is very similar to traditional RIP.
Example 8-3 RIPng
Router(config)#ipv6 router rip process
Router(config-rtr)#interface type number
Router(config-if)#ipv6 rip process enable
Like RIP for IPv4, troubleshoot RIPng by looking at the routing table (show
ipv6 route), by reviewing the routing protocols (show ipv6 protocols), and
by watching routing updates propagated between routers (debug ipv6 rip).