Cisco ASA 5505 - Manual (Page 546)

28-8
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 28 Configuring IPv6 Neighbor Discovery
Configuring the Router Advertisement Transmission Interval
Configuring the Router Advertisement Transmission Interval
To configure the interval between IPv6 router advertisement transmissions on an interface, enter the
following command:
Examples
The following example configures an IPv6 router advertisement interval of 201 seconds for the selected
interface, GigabitEthernet 0/0:
hostname (config)# interface gigabitethernet 0/0
hostname (config-if)# ipv6 nd ra-interval 201
Configuring the Router Lifetime Value
To configure the router lifetime value in IPv6 router advertisements on an interface, enter the following
command:
Command Purpose
ipv6 nd ra-interval [msec] value
Example:
hostname (config-if)# ipv6 nd ra-interval
201
Sets the interval between IPv6 router advertisement transmissions.
The optional msec keyword indicates that the value provided is in
milliseconds. If this keyword is not present, the value provided is in
seconds.
Valid values for the value argument range from 3 to 1800 seconds or from
500 to 1800000 milliseconds if the msec keyword is provided.
The interval between transmissions should be less than or equal to the IPv6
router advertisement lifetime if the ASA is configured as a default router.
For more information, see the
“Configuring the Router Lifetime Value”
section on page 28-8 . To prevent synchronization with other IPv6 nodes,
randomly adjust the actual value used to within 20 percent of the desired
value.
Command Purpose
ipv6 nd ra-lifetime [msec] value
Example:
hostname (config-if)# ipv6 nd ra-lifetime
2000
Specifies the length of time that nodes on the local link should consider the
ASA as the default router on the link.
The optional msec keyword indicates that the value provided is in
milliseconds. If this keyword is not present, the value provided is in
seconds.
Valid values for the value argument range from 0 to 9000 seconds.
Entering 0 indicates that the ASA should not be considered a default router
on the selected interface.