IPv6 Addressing Configuration

Configuring a Static IPv6 Address on a VLAN

Statically Configuring A Global Unicast Address

Syntax:. [no] ipv6 address < network-prefix><device-id >/< prefix-length > [no] ipv6 address < network-prefix>::/< prefix-length > eui-64

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, then the above commands statically configure a global unicast address, but have no effect on the current link-local address.

<network-prefix>: This includes the global routing prefix and the subnet ID for the address. For more on this topic, refer to “Prefixes in Routable IPv6 Addresses” on page 3-18.

<device-id>: Enters a user-defined device identity.

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

eui-64:Specifies using the Extended Unique Identifier format to create a device identifier based on the VLAN MAC address. Refer to “Extended Unique Identifier (EUI)” on page 3-14.

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. (Refer to “IPv6 Address Deprecation” on page 3-25.)

The no form of the command erases the specified address and, if no other IPv6-enabling command is configured on the VLAN, disables IPv6 on the VLAN. (Refer to “Disabling IPv6 on a VLAN” on page 4-16.)

To view the currently configured static IPv6 addresses per-VLAN, use show run.

To view all currently configured IPv6 unicast addresses, use the following:

■show ipv6 (Lists IPv6 addresses for all VLANs configured on the switch.)

■show ipv6 vlan < vid > (Lists IPv6 addresses configured on VLAN < vid >.)

For more information, refer to “View the Current IPv6 Addressing Configura­ tion” on page 4-21.

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