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Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring IPv6 Neighbor Discovery
Configuring the Router Advertisement Transmission Interval
Examples
The following example configures a DAD attempt value of 20 for the selected interface, GigabitEthernet
0/0:
hostname (config)# interface gigabitethernet 0/0
hostname (config-if)# ipv6 nd dad attempts 20
Suppressing Router Advertisement Messages
Router advertisement messages are automatically sent in response to router solicitation messages. You
may want to disable these messages on any interface for which you do not want the ASA to supply the
IPv6 prefix (for example, the outside interface).
To suppress the router lifetime value in IPv6 router advertisements on an interface, enter the following
command.
Detailed Steps
Examples
The following example suppresses an IPv6 router advertisement transmission for the specified interface,
which is GigabitEthernet 0/0:
hostname (config)# interface gigabitethernet 0/0
hostname (config-if)# ipv6 nd suppress-ra 900
Command Purpose
ipv6 nd suppress-ra seconds
Example:
hostname (config-if)# ipv6 nd suppress-ra
900
Suppresses the router lifetime value.
The seconds argument specifies the validity of the ASA as a default router
on this interface. Valid values range from 0 to 9000 seconds. A zero
indicates that the ASA should not be considered a default router on the
specified interface.
Entering this command causes the ASA to appear as a regular IPv6
neighbor on the link and not as an IPv6 router.
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