Cisco IOS Cookbook, 2nd Edition

Manually Configuring IPv6 Addresses on an Interface

Problems

You want to manually configure a full IPv6 address on an interface.

Solution

You can configure an IPv6 unicast address on an interface by using a very similar process to how we set up IPv4 addresses in previous chapters of this book:

Router1#configure terminal 
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#ipv6 unicast-routing
Router1(config)#interface FastEthernet0/0
Router1(config-if)#ipv6 address AAAA::1/64
Router1(config-if)#exit
Router1(config)#end
Router1#

We can configure an IPv6 Anycast address by using the anycast keyword:

Router1#configure terminal 
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#ipv6 unicast-routing
Router1(config)#interface FastEthernet0/0
Router1(config-if)#ipv6 address AAFF::1/64 anycast
Router1(config-if)#exit
Router1(config)#end
Router1#

You can specify an IPv6 link-local address by using the link-local keyword:

Router1#configure terminal 
Enter configuration commands, one per line. End with CNTL/Z.
Router1(config)#ipv6 unicast-routing
Router1(config)#interface FastEthernet0/0
Router1(config-if)#ipv6 address FE80::1 link-local
Router1(config-if)#exit
Router1(config)#end
Router1#

Discussion

In this recipe, we have manually configured three different types of IPv6 addresses. The first example simply configures a standard globally accessible unicast address. This is similar to the standard IPv4 unicast address:

Router1(config)#interface