ISIS For IPv6 Configuration on Cisco IOS


ISIS For IPv6 Configuration Example on Cisco IOS

In this Cisco ISIS for IPv6 configuration example, we will configure ISIS with IPv6 extension configuration commands.

For our example we will use the below four-routered topology. Here, we will have 3 different area. There is a Single Topology and Multi-Topology configurations with ISIS for IPv6. We will give an example to Multi-Topology here.

isis topology ipcisco

Let’s start the ISIS for IPv6 configuration.

Firstly, we will enable IPv6 routing on each routers. We will do this with “ipv6 unicast-routing” command.

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

Now, IPv6 routing is enabled on each router. It is time to configure router ISIS process. Here, we will use a name for ISIS process. This name is “ABC”. Beside, we will give net addresses to the interface and we will configure the router global level.

By the way, let’s remember the router levels with a shape.


Router A (config) # router isis ABC
Router A (config-rtr)# net 49.0000.0000.0000.AAAA.00
Router A (config-rtr)# is-type level-2-only
Router B (config) # router isis ABC
Router B (config-rtr)# net 50.0000.0000.0000.BBBB.00
Router B (config-rtr)# is-type level-2-only

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Lesson tags: IPv6, routing, ipv6 routing, is-is for ipv6
Back to: CCIE > IS-IS

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