Configure IPv6 Router Advertisement

As a best practice, ensure that the interval between router advertisement transmission is less than or equal to the router lifetime value if the router is advertised as a default route.
  1. Access global configuration mode.
    device# configure terminal
    
  2. Access interface configuration mode.
    device# interface ethernet 0/1
    
  3. Configure the number of seconds that a router is advertised as the default router on an interface.
    device(config-if-eth-0/1)# ipv6 nd ra-lifetime 1900
    If you set the lifetime to 0, the router is not advertised as a default router.
  4. Configure the maximum and minimum intervals (in seconds) during which router advertisement messages are sent randomly.
    device(config-if-eth-0/1)# ipv6 nd ra-interval 1200 min 400
  5. Specify the maximum number of hops to advertise in advertisement messages.
    device(config-if-eth-0/1)# ipv6 nd hoplimit 32
  6. Specify the size of the maximum transmission unit (MTU) that is advertised in an advertisement message.
    device(config-if-eth-0/1)# ipv6 nd mtu 2400