CLI Reference Guide

Chapter 28 | IP Interface Commands
IPv6 Interface
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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
◆ 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.
◆ 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)#
ipv6 nd ra lifetime This command configures the router lifetime value used in IPv6 router
advertisements sent from an interface. Use the no form to restore the default
setting.
Syntax
ipv6 nd ra lifetime lifetime
no ipv6 nd ra lifetime
lifetime - Router lifetime. (Range: 0-90000 seconds)
Command Mode
Interface Configuration (VLAN)