How to configure Static Global Unicast IPv6 Address in a Cisco Router Interface

Global Unicast IPv6 Addresses are globally routable addresses on IPv6 Internet. Currently left most three bits of Global Unicast IPv6 Addresses are fixed as 001. Therefore, the range of Global Unicast Addresses available now are from 2000 to 3FFF. Please visit Global Unicast IPv6 Addresses for more details. We can assign a Global Unicast IPv6 Addresses to an interface using different ways. Please visit the below link to learn more about different methods to assign a Global Unicast IPv6 address to an interface.

Following Cisco IOS configuration commands can be used to configure a Static Global Unicast IPv6 Address in a Cisco Router Interface.

OmniSecuR1#configure terminal
OmniSecuR1(config)#interface fastEthernet 0/0
OmniSecuR1(config-if)#ipv6 address 2001:db8:aaaa:1::1/64
OmniSecuR1(config-if)#no shutdown
OmniSecuR1(config-if)#exit
OmniSecuR1(config)#exit
OmniSecuR1#

After configuring the IPv6 address, you can view the interface status using the Cisco IOS show command "show ipv6 interface brief" as shown below.

OmniSecuR1#show ipv6 interface brief
FastEthernet0/0            [up/up]
    FE80::C800:DFF:FE80:8
    2001:DB8:AAAA:1::1
FastEthernet0/1            [administratively down/down]
    unassigned
Serial1/0                  [administratively down/down]
    unassigned
Serial1/1                  [administratively down/down]
    unassigned
Serial1/2                  [administratively down/down]
    unassigned
Serial1/3                  [administratively down/down]

Written by Jajish Thomas.
Last updated on 17^th May, 2024.