Commands to statically configure a global unicast address


ipv6 address [<network-prefix> <interface-id> | <prefix-length> ]

ipv6 address [<network-prefix> ::/ <prefix-length> eui-64 ]



This includes the global routing prefix and the subnet ID for the address.


Enters a user-defined interface identity.


Specifies the number of bits in the network prefix. If you are using the eui-64 option, this value must be 64.


Specifies using the Extended Unique Identifier (EUI) format to create an interface identifier based on the VLAN MAC address.


If IPv6 is not already enabled on a VLAN, either of these command options do the following:
  • enable IPv6 on the VLAN

  • configure a link-local address using the EUI-64 format

  • statically configure a global unicast address

If IPv6 is already enabled on the VLAN, the above commands statically configure a global unicast address, but have no effect on the current link-local address.

After verification of uniqueness by DAD, the lifetime of a statically configured IPv6 address assigned to a VLAN is set to permanent and is configured as a preferred address.