Cisco ASA 5505 Configuration Manual page 258

Completing Interface Configuration (All Models)
•
(Optional) To configure which IPv6 prefixes are included in IPv6 router advertisements, complete the
Step 7
following.
By default, prefixes configured as addresses on an interface are advertised in router advertisements. If
you configure prefixes for advertisement using this area, then only these prefixes are advertised.
a.
b.
c.
d.
e.
f.
Click OK.
Step 8
You return to the Edit Interface dialog box.
Step 9 Click OK.
You return to the Configuration > Device Setup > Interfaces pane.
Configuring the Link-Local Address on an Interface (Transparent Firewall Mode)
If you only need to configure a link-local address and are not going to assign any other IPv6 addresses,
you have the option of manually defining the link-local address.
To assign a link-local address to an interface, perform the following steps:
Choose the Configuration > Device Setup > Interfaces pane.
Step 1
Cisco ASA 5500 Series Configuration Guide using ASDM
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To allow the generation of addresses for hosts, make sure that the Suppress RA check box is
unchecked. This is the default setting if IPv6 unicast routing is enabled. To prevent the generation
of IPv6 router advertisement transmissions, check the Suppress RA check box.
In the Interface IPv6 Prefixes area, click Add.
The Add IPv6 Prefix for Interface dialog box appears.
In the Address/Prefix Length field, enter the IPv6 address with the prefix length. To configure
settings that apply to all prefixes, check the Default Values check box instead of entering an
Address.
(Optional) To indicate that the IPv6 prefix is not advertised, check the No Advertisements check
box.
(Optional) To indicate that the specified prefix is not used for on-link determination, check the
Off-link check box.
(Optional) To indicate to hosts on the local link that the specified prefix cannot be used for IPv6
autoconfiguration, check the No Auto-Configuration check box.
In the Prefix Lifetime area, choose one of the following:
Lifetime Duration—Specify the following:
–
A valid lifetime for the prefix in seconds from the drop-down list. This setting is the amount of
time that the specified IPv6 prefix is advertised as being valid. The maximum value represents
infinity. Valid values are from 0 to 4294967295. The default is 2592000 (30 days).
A preferred lifetime for the prefix from the drop-down list. This setting is the amount of time
that the specified IPv6 prefix is advertised as being preferred. The maximum value represents
infinity. Valid values are from 0 to 4294967295. The default setting is 604800 (seven days).
Lifetime Expiration Date—Specify the following:
–
Choose a valid month and day from the drop-down list, and then enter a time in hh:mm format.
Choose a preferred month and day from the drop-down list, and then enter a time in hh:mm
format.
Chapter 8 Configuring Interfaces
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