device# configure terminal
device(config)# router isis
device(config-isis-router)# address-family ipv6 unicast
device(config-router-isis-ipv6u)# default-metric 45
The following example sets the default value to 45 for the IPv6 unicast address family.
device# configure terminal device(config)# router isis device(config-isis-router)# address-family ipv6 unicast device(config-router-isis-ipv6u)# default-metric 45