Brocade Communications Systems 6650 manual Here is another example with a specified range

IPv6 neighbor discovery configuration 5

When adjusting these parameter settings, Brocade recommends that the interval between router advertisement transmission be less than or equal to the router lifetime value if the router is advertised as a default router. For example, to adjust the interval of router advertisements to 300 seconds and the router lifetime value to 1900 seconds on Ethernet interface 1/1/1, enter the following commands.

Brocade(config)#interface ethernet 1/1/1 Brocade(config-if-e10000-1/1/1)#ipv6 nd Brocade(config-if-e10000-1/1/1)#ipv6 nd Brocade(config-if-e10000-1/1/1)#ipv6 nd

ra-interval 300 ra-lifetime 1900 ra-hop-limit 1

Here is another example with a specified range.

Brocade(config)#interface ethernet 1/1/2 Brocade(config-if-e10000-1/1/2)#ipv6 nd ra-interval range 33 55 Brocade(config-if-e10000-1/1/2)#ipv6 nd ra-lifetime 1900 Brocade(config-if-e10000-1/1/2)#ipv6 nd ra-hop-limit 1

Syntax: [no] ipv6 nd ra-interval<number> <min range value> <max range value>

Syntax: [no] ipv6 nd ra-lifetime <number>

Syntax: ipv6 nd ra-hop-limit <number>

<number> is a value from 0 – 255. The default is 64.

The ipv6 nd ra-interval<number> can be a value between 3 – 1800 seconds. The default is 200 seconds. The actual RA interval will be from .5 to 1.5 times the configured or default value. For example, in the above configuration, for ipv6 nd ra-interval 300, the range would be 150 – 450. To restore the default interval of 200 seconds, use the no form of the command.

The ipv6 nd ra-interval range <min range value> <max range value> command lets you specify a range of values instead of a single value.

The <min range value> specifies the minimum number of seconds allowed between sending unsolicited multicast router advertisements from the interface. The default is 0.33 times the <max range value> if the <max range value> is greater than or equal to 9 seconds. Otherwise, the default is the value specified by the <max range value>. The <min range value> can be a number between -3 – (.75 x <max range value>).

The <max range value> parameter specifies the maximum number of seconds allowed between sending unsolicited multicast router advertisements from the interface. This number can be between 4 – 1800 seconds and must be greater than the <min range value> x 1.33. The default is 600 seconds.

The ipv6 nd ra-lifetime<number> is a value between 0 – 9000 seconds. To restore the router lifetime value of 1800 seconds, use the no form of the command.

The ipv6 nd ra-hop-limit<number> is a value from 0 – 255. The default is 64.

NOTE

By default, router advertisements will always have the MTU option. To suppress the MTU option, use the following command at the Interface level of the CLI: ipv6 nd suppress-mtu-option.

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