Dell Brocade DCX, Configuration Manual

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BigIron RX Series Configuration Guide 1087
53-1001810-01
Configuring IPv6 neighbor discovery
43
•
The interval in seconds at which duplicate address detection sends a neighbor solicitation
message on an interface. By default, duplicate address detection sends a neighbor solicitation
message every 1 second.
NOTE
For the interval at which duplicate address detection sends a neighbor solicitation message on an
interface, the
Brocade device uses seconds as the unit of measure instead of milliseconds.
For example, to change the number of neighbor solicitation messages sent on Ethernet interface
3/1 to two and the interval between the transmission of the two messages to 9 seconds, enter the
following commands.
BigIron RX(config)# interface ethernet 3/1
BigIron RX(config-if-e100-3/1)# ipv6 nd dad attempt 2
BigIron RX(config-if-e100-3/1)# ipv6 nd ns-interval 9
Syntax: [no] ipv6 nd dad attempt < number >
Syntax: [no] ipv6 nd ns-interval < number >
For the number of neighbor solicitation messages, you can specify any number of attempts.
Configuring a value of 0 disables duplicate address detection processing on the specified interface.
To restore the number of messages to the default value, use the no form of this command.
For the interval between neighbor solicitation messages, you can specify any number of seconds.
Brocade does not recommend very short intervals in normal IPv6 operation. When a non-default
value is configured, the configured time is both advertised and used by the router itself. To restore
the default interval, use the no form of this command.
Setting IPv6 router advertisement parameters
You can adjust the following parameters for router advertisement messages:
•
The interval (in seconds) at which an interface sends router advertisement messages. By
default, an interface sends a router advertisement message every 200 seconds.
•
The "router lifetime" value, which is included in router advertisements sent from a particular
interface. The value (in seconds) indicates if the router is advertised as a default router on this
interface. If you set the value of this parameter to 0, the router is not advertised as a default
router on an interface. If you set this parameter to a value that is not 0, the router is advertised
as a default router on this interface. By default, the router lifetime value included in router
advertisement messages sent from an interface is 1800 seconds.
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 3/1, enter the
following commands.
BigIron RX(config)# interface ethernet 3/1
BigIron RX(config-if-e100-3/1)# ipv6 nd ra-interval 300
BigIron RX(config-if-e100-3/1)# ipv6 nd ra-lifetime 1900
Syntax: [no] ipv6 nd ra-interval < number >
Syntax: [no] ipv6 nd ra-lifetime < number >
The < number > parameter in both commands indicates any numerical value. To restore the default
interval or router lifetime value, use the no form of the respective command.