ipv6 address


ipv6 address <IPV6-ADDR>/<MASK>{eui64 | [tag <ID>]}

no ipv6 address <IPV6-ADDR>/<MASK>


Sets an IPv6 address on the interface.

The no form of this command removes the IPv6 address on the interface.


This command automatically creates an IPv6 link-local address on the interface. However, it does not add the ipv6 address link-local command to the running configuration. If you remove the IPv6 address, the link-local address is also removed. To maintain the link-local address, you must manually execute the ipv6 address link-local command.

Command context




Specifies the IP address in IPv6 format (xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx), where x is a hexadecimal number from 0 to F. You can use two colons (::) to represent consecutive zeros (but only once), remove leading zeros, and collapse a hextet of four zeros to a single 0. For example, this address 2222:0000:3333:0000:0000:0000:4444:0055 becomes 2222:0:3333::4444:55.


Specifies the number of bits in the address mask in CIDR format (x), where x is a decimal number from 0 to 128.

Configure the IPv6 address in the EUI-64 bit format.
tag <ID>

Configure route tag for connected routes. Range: 0 to 4294967295. Default: 0.


Administrators or local user group members with execution rights for this command.


Setting the IPv6 address 2001:0db8:85a3::8a2e:0370:7334 with a mask of 24 bits:

switch(config-if)# ipv6 address 2001:0db8:85a3::8a2e:0370:7334/24

Removing the IP address 2001:0db8:85a3::8a2e:0370:7334 with mask of 24 bits:

switch(config-if)# no ipv6 address 2001:0db8:85a3::8a2e:0370:7334/24