Users Guide

Table Of Contents
1420 IPv6 Routing
Configuring IPv6 Interface Settings
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. The
ipv6 enable command can be used 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. Multiple globally
unique unicast addresses (2001::/23) with non-overlapping
subnets and one unique local (fc00::/7) address may be
configured in addition to the link local address.
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.