Enable IPv6 for a Trusted or Optional Interface
You can configure a trusted, optional, or custom interface with an IPv6 address in addition to the IPv4 address. IPv6 is not enabled on any interface by default. When you enable IPv6, you can configure the interface with one or more static IPv6 addresses.You can also configure router advertisement of the IP address prefix.
You cannot use these special purpose IP addresses as an IPv6 interface address:
- IP addresses that start with 2002, unless bits 17-48 specify a valid IPv4 address
- IP addresses that start with FE80, because this specifies a link local address
- IP addresses that start with FEC0, because this specifies a site local address
- IP addresses that start with FF, because this is used for IPv6 multicast addresses
Add a Static IPv6 IP Address
- Select Network > Interfaces.
The Network Interfaces page appears.
- Select a trusted, optional, or custom interface. Click Edit.
- Select the IPv6 tab.
- Select the Enable IPv6 check box.
- Click Add.
- Type the IPv6 IP address and the routing prefix size.
- To add the prefix for this IP address to the Prefix Advertisement list, select the Add Prefix Advertisement check box.
You can select this option only if the prefix size is /64.
- Click OK.
The IP address is added to the list
Configure Router Advertisement
When you enable IPv6 for a trusted, optional, or custom interface, you can enable the interface to send Router Advertisement messages. When you enable Router Advertisement, the interface sends the configured IP address prefixes in router advertisements on the local network. Router Advertisement is used for IPv6 neighbor discovery and IPv6 address autoconfiguration.
The Router Advertisement settings appear in the Router Advertisement section of the IPv6 tab.
Router Advertisement Settings
Select the Send Advertisement check box to enable the XTM device to send periodic router advertisements and respond to router solicitations. If you select the Add Prefix Advertisement check box for any IPv6 IP address, the Send Advertisement check box is automatically selected.
The Router Advertisement section has five other settings that appear in all router advertisement messages:
- M Flag — The managed address configuration flag. This flag indicates that host addresses are available through DHCPv6. If the M flag is selected, the O flag is ignored, because DHCPv6 returns all available configuration information. The M flag is disabled by default.
- O Flag — The other stateful configuration flag. This flag indicates that other configuration information is available through DHCPv6. Examples of such information include DNS-related information, or information about other servers within the network. The O flag is disabled by default.
- Default Lifetime — The lifetime associated with the default router. The default value is 30 minutes. The maximum is 150 minutes.
- Maximum Interval — The maximum time allowed between unsolicited multicast router advertisements sent from the interface. It must be a value from 4 to 1800 seconds. The default value is 10 minutes.
- Minimum Interval — The minimum time allowed between unsolicited multicast router advertisements sent from the interface. It must be a value from 3 to 1350 seconds. The default value is 200 seconds.
Add a Prefix Advertisement
To add a Prefix Advertisement prefix for a static IPv6 address:
In the Static IPv6 Addresses list, select the Add Prefix Advertisement check box adjacent to a configured static IP address. You can also select this check box when you add the static IP address. In either case, the prefix for the static IP address is added to the Prefix Advertisement list.
For example, if the static IP address is 2001:db8::2/64, when you select Add Prefix Advertisement, the prefix 2001:db8:: is added to the Prefix Advertisement list.
To add a Prefix Advertisement that is not associated with a static IPv6 address:
- In the Router Advertisement section, select the Send Advertisement check box.
- Click Add.
The Add Prefix Advertisement dialog box appears.
- In the Prefix text box, type the IPv6 prefix.
The prefix must be a network IP address in the format x:x::/64.
- (Optional) Change the other prefix advertisement settings:
- Valid Lifetime — The length of time after the packet is sent that the prefix is valid for the purpose of onlink determination.
- Preferred Lifetime — The length of time after the packet is sent that addresses generated from the prefix through stateless address autoconfiguration remain preferred.
- Onlink — If enabled, a host can use this prefix to determine whether a destination is onlink as opposed to reachable only through a router.
- Autonomous — If enabled, a host can use this prefix for stateless autoconfiguration of the link-local address.
- Click OK.
Edit a Prefix Advertisement
- To change the Autonomous and Online settings, select or clear the check box in the adjacent column.
- To edit other settings, select the Prefix Advertisement and click Edit.
Remove a Prefix Advertisement
- To remove the prefix advertisement associated with a configured static IP address, clear the Add Prefix Advertisement check box adjacent to the static IP address in the Static IPv6 Addresses table.
- To remove any other prefix advertisement, select the prefix in the Prefix Advertisement list. Then click Remove.
About IPv6 Support
Configure IPv6 Connection Settings
Common Interface Settings