Configuring IPv6 Routing 1257
Configuring IPv6 Interface Settings

Beginning in Privileged EXEC mode, use the following commands to

configure IPv6 settings for VLAN, tunnel, or loopback interfaces.

Command Purpose
configure Enter Global Configuration mode.
interface {vlan |
tunnel | loopback}
interface-id
Enter Interface Configuration mode for the specified VLAN,
tunnel, or loopback interface.
ipv6 enable Enable IPv6 on the interface. Configuring an IPv6 address
will automatically enable IPv6 on the interface.
ipv6 address
{autoconfig | dhcp |

prefix/prefix-length

[eui64]}
Configure the IPv6 address and network prefix length.
Setting an IPv6 address enables IPv6 on the interface. You
can also use the ipv6 enable command to enable IPv6 on the
interface without setting an address.
Link-local, multicast, IPv4-compatible, and IPv4-mapped
addresses are not allowed to be configured.
Include the EUI-64 keyword to have the system add the 64-
bit interface ID to the address. You must use a network prefix
length of 64 in this case.
For VLAN interfaces, use the dhcp keyword to enable the
DHCPv6 client and obtain an IP address form a network
DHCPv6 server.
ipv6 traffic-filter

ACL

name
Add an access-list filter to this interface.
ipv6 unreachables (VLAN interfaces only) Allow the interface to send ICMPv6
Destination Unreachable messages. The no ipv6
unreachables command suppresses the ICMPv6 unreachable
messages for this interface.
exit Exit the interface configuration mode.