Commands to statically configure a global unicast address

Syntax

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

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

Options

<network-prefix>: This includes the global routing prefix and the subnet ID for the address.
<interface-id>: Enters a user-defined interface identity.
<prefix-length>: Specifies the number of bits in the network prefix. If you are using the eui-64 option, this value must be 64.
eui-64: Specifies using the Extended Unique Identifier (EUI) format to create an interface identifier based on the VLAN MAC address.

Usage

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.