Chapter 30
| IP Interface Commands
IPv6 Interface
– 951 –
Example
The following configures a network prefix with a valid lifetime of 1000 seconds, and
a preferred lifetime of 900 seconds:
Console(config)#interface vlan 1
Console(config)#ipv6 nd prefix 2011:0DBF::/35 1000 900
Console(config)#
ipv6 nd ra interval This command configures the interval between the transmission of IPv6 router
advertisements on an interface. Use the no form to restore the default interval.
Syntax
ipv6 nd ra interval minimum-interval [maximum-interval]
no ipv6 nd ra interval
minimum-interval - The maximum interval between IPv6 router
advertisements. (Range: 4-1800 seconds)
maximum-interval - The minimum interval between IPv6 router
advertisements. (Range: 3-1350 seconds)
Command Mode
Interface Configuration (VLAN)
Default Setting
maximum interval: 600 seconds
minimum interval: 198 seconds
Command Usage
â—† The interval between transmissions should be less than or equal to the IPv6
router advertisement lifetime if you configure a route as a default router by
using the ipv6 nd ra lifetime command.
â—† To prevent synchronization with other IPv6 nodes, the actual interval used is
randomly selected from a value between the minimum value set by the system
(33% of the maximum RA interval) and the maximum value set by the ipv6 nd
ra interval command.
Example
The following sets the maximum RA interval to 1800 seconds:
Console(config)#interface vlan 1
Console(config)#ipv6 nd ra interval 1800
Console(config)#
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