Configure RIPng

Step 1: Enable IPv6 unicast routing on both routers in global configuration mode :

R1(config)#ipv6 unicast-routing

R2(config)#ipv6 unicast-routing

Step 2: Enable IPv6 on the physical interface fastethernet0/0 :

R1(config)#interface fastethernet0/0
R1(config-if)#ipv6 enable
R1(config-if)#no shut 

R2(config)#interface fastethernet0/0
R2(config-if)#ipv6 enable
R2(config-if)#no shut

Step 3: Configure an IPv6 unicast address on the loopback interface of both routers using the ipv6 address/prefix-length :

R1(config)#interface loopback0
R1(config-if)#ipv6 address 2000:192:168::1/128

R2(config)#interface loopback0
R2(config-if)#ipv6 address 3000:192:168::1/128
$

At this point you will be able to ping the physical interface IPv6 address of the routers but wouldn’t be able to ping the loopback interfaces :

Try pinging R1’s loopback interface through R1 :

R2#ping 2000:192:168::1 

This will be the output you will get on the R2 CLI :

So, now configure RIPng on both the routers and will try pinging them again after the configuration :

Step 4: Enabling RIPng on both routers using the ipv6 router rip <name> global configuration command :

R1#ipv6 router rip routing 
R2#ipv6 router rip routing 

Step 5: Enable RIP on the physical as well as loopback interface with the ipv6 rip <name> enable interface subcommand on both the routers (where the <name> in this case “routing” matches the ipv6 router rip <name> global configuration command).

R1(config)#interface fastEthernet 0/0
R1(config-if)#ipv6 rip routing enable
R1(config-if)#exit
R1(config)#interface loopback 0
R1(config-if)#ipv6 rip routing enable
R1(config)#do wr

R2(config)#interface fastEthernet 0/0
R2(config-if)#ipv6 rip routing enable
R2(config-if)#exit
R2(config)#interface loopback 0
R2(config-if)#ipv6 rip routing enable
R2(config-if)#exit
R2(config)#do wr

Step 6: Verifying configuration of RIPng on both routers :

R1#show ipv6 protocols

R2#show ipv6 protocols

Pre-requisites: Routing Information Protocol (RIP), Routing Information Protocol (RIP) V1 & V2, Implementation of RIP Routing 

Routing Information Protocol (RIP) is a dynamic routing protocol that applies hop count as a routing metric to find the best path between source and destination networks. It is a distance vector routing protocol with an AD value of 120 and operates on the network layer of the OSI model. RIP uses port number 520.