EIGRP For IPv6 Configuration On Cisco IOS

How to Configure EIGRP For IPv6 On Cisco Routers?

EIGRP for IPv6 is one of the most used routing protocol with IPv6. It is the enhanced version of EIGRP. In this IPv6 Training Routing Example, we will see how to configure EIGRP for IPv6 on Cisco routers. We will learn Cisco EIGRP Configuration for IPv6.

For our example, we will use the topology below. Here, simply we have four routers connected serially eachother and two switches and PCs are connected to this routers.

As a summary, let’s check waht will we do for EIGRP for IPv6 Configuration:

1. Global IPv6 Enable on Routers
2. EIGRP for IPv6 Process Creation
3.  Router-ID Assign
   
4.  EIGRP Process addition under Interfaces
   
5.  Passive interface configuraiton
   
6.  Verification

Let’s see each of this EIGRP for IPv6 configuration example one by one.

First of all we enable IPv6 routing on all routers. Because, by default ipv6 routing is not enabled.

Router A # config terminal
Router A (config) # ipv6 unicast-routing

Router B # config terminal
Router B (config) # ipv6 unicast-routing

Router C # config terminal
Router C (config) # ipv6 unicast-routing

Router D # config terminal
Router D (config) # ipv6 unicast-routing

After enabling IPv6 routing, it is time to configure EIGRP for IPv6. For this configuration we will use “ipv6 router eigrp process number” configuration command. We will create the EIGRP process on the Router. And we will no shutdown this eigrp process.

Under IPv6 eigrp process, we will also configure a router ID. This router ID will be in IPv4 format like the one used in EIGRP before. Here our routing Ids will be 1.1.1.1, 2.2.2.2, 3.3.3.3 and 4.4.4.4 simply.

Router A # config terminal
Router A (config) # ipv6 router eigrp 100
Router A (config-rtr)# no shutdown
Router A (config-rtr)# eigrp router-id 1.1.1.1

Router B # config terminal
Router B (config) # ipv6 router eigrp 100
Router B (config-rtr)# no shutdown
Router B (config-rtr)# eigrp router-id 2.2.2.2

Router C # config terminal
Router C (config) # ipv6 router eigrp 100
Router C (config-rtr)# no shutdown
Router C (config-rtr)# eigrp router-id 3.3.3.3

Router D # config terminal
Router D (config) # ipv6 router eigrp 100
Router D (config-rtr)# no shutdown
Router D (config-rtr)# eigrp router-id 4.4.4.4

Now, we will configure the interfaces as EIGRP for IPv6. Here we will use the command “ipv6 eigrp process-number” command.

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