Setting the IPv6 Hitless Purge Timer

You can configure the timer to set the duration for which the routes should be preserved after switchover. The following task configures the IPv6 hitless purge timer for the default VRF.
  1. Enter global configuration mode.
    device# configure terminal
  2. Enter the ipv6 hitless-route-purge-timer command, and specify a value, to set the IPv6 hitless purge timer for the default VRF.
    device(config)# ipv6 hitless-route-purge-timer 60

The following example sets the IPv6 hitless purge timer on the default VRF to 60 seconds.

device(config)# ipv6 hitless-route-purge-timer 60

The following example sets the IPv6 purge timer for a non-default VRF instance to 180 seconds.

device(config)# vrf blue
device(config-vrf-blue)# rd 10:10
device(config-vrf-blue)# address-family ipv6
device(config-vrf-blue-ipv4)# ipv6 hitless-route-purge-timer 60