Configuring Ipv6 On An Interface - Cisco FirePOWER ASA 5500 series Configuration Manual

Chapter 12 Configuring IPv6

Configuring IPv6 on an Interface

At a minimum, each interface needs to be configured with an IPv6 link-local address. Additionally, you
can add a site-local and global address to the interface.
The security appliance does not support IPv6 anycast addresses.
Note
You can configure both IPv6 and IPv4 addresses on an interface.
To configure IPv6 on an interface, perform the following steps:
Enter interface configuration mode for the interface on which you are configuring the IPv6 addresses:
Step 1
hostname(config)# interface if
Configure an IPv6 address on the interface. You can assign several IPv6 addresses to an interface, such
Step 2
as an IPv6 link-local, site-local, and global address. However, at a minimum, you must configure a
link-local address.
There are several methods for configuring IPv6 addresses. Pick the method that suits your needs from
the following:
•
•
•
OL-10088-01
The simplest method is to enable stateless autoconfiguration on the interface. Enabling stateless
autoconfiguration on the interface configures IPv6 addresses based on prefixes received in Router
Advertisement messages. A link-local address, based on the Modified EUI-64 interface ID, is
automatically generated for the interface when stateless autoconfiguration is enabled. To enable
stateless autoconfiguration, enter the following command:
hostname(config-if)# ipv6 address autoconfig
If you only need to configure a link-local address on the interface and are not going to assign any
other IPv6 addresses to the interface, you have the option of manually defining the link-local address
or generating one based on the interface MAC address (Modified EUI-64 format):
Enter the following command to manually specify the link-local address:
–
hostname(config-if)# ipv6 address ipv6-address link-local
Enter the following command to enable IPv6 on the interface and automatically generate the
–
link-local address using the Modified EUI-64 interface ID based on the interface MAC address:
hostname(config-if)# ipv6 enable
You do not need to use the ipv6 enable command if you enter any other ipv6 address
Note
commands on an interface; IPv6 support is automatically enabled as soon as you assign an
IPv6 address to the interface.
Assign a site-local or global address to the interface. When you assign a site-local or global address,
a link-local address is automatically created. Enter the following command to add a global or
site-local address to the interface. Use the optional eui-64 keyword to use the Modified EUI-64
interface ID in the low order 64 bits of the address.
hostname(config-if)# ipv6 address ipv6-address [eui-64]
Cisco Security Appliance Command Line Configuration Guide
Configuring IPv6
12-3