Basic network topology

Basic IPv6 Topology

Autoconfig router configuration

By default, Cisco router advertisse all the prefixes configured on the interface. Configuring the autoconfig server is just as simple as configuring an IPv6 address.

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#ipv6 unicast-routing
R1(config)#
R1(config)#interface Ethernet0/0
R1(config-if)# ipv6 address 2001:1234:5678::1/64
R1(config-if)#!

Autoconfig client configuration

On the autoconfig clients, the IPv6 address is configured dynamically.

R3(config)#ipv6 unicast-routing
R3(config)#
R3(config)#interface Ethernet0/0
R3(config-if)# ipv6 address autoconfig
R3(config-if)#!

Verification

on R1

R1#sh ipv6  int eth0/0
Ethernet0/0 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::A8BB:CCFF:FE00:100
  No Virtual link-local address(es):
  Global unicast address(es):
    2001:1234:5678::1, subnet is 2001:1234:5678::/64

on R3

R3#sh ipv6  int eth0/0
Ethernet0/0 is up, line protocol is up
  IPv6 is enabled, link-local address is FE80::A8BB:CCFF:FE00:300
  No Virtual link-local address(es):
  Stateless address autoconfig enabled
  Global unicast address(es):
    2001:1234:5678:0:A8BB:CCFF:FE00:300, subnet is 2001:1234:5678::/64 [EUI/CAL/PRE]
      valid lifetime 2591871 preferred lifetime 604671