Configuring Route Learning And Advertising Parameters - Dell PowerConnect B-RX Configuration Manual

TABLE 177
Timer
Hold-down
Garbage-collection
You can adjust these timers for RIPng. Before doing so, keep the following caveats in mind:
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The following example sets updates to be broadcast every 45 seconds. If a route is not heard from
in 135 seconds, the route is declared unusable. Further information is suppressed for an
additional 10 seconds. Assuming no updates, the route is flushed from the routing table 20
seconds after the end of the hold-down period.
BigIron RX(config)# ipv6 router rip
BigIron RX(config-ripng-router)# timers 45 135 10 20
Syntax: [no] timers <update-timer> <timeout-timer> <hold-down-timer>
Possible values for the timers are as follows:
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NOTE
You must enter a value for each timer, even if you want to retain the current setting of a particular
timer.
To return to the default values of the RIPng timers, use the no form of this command.

Configuring route learning and advertising parameters

You can configure the following learning and advertising parameters:
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BigIron RX Series Configuration Guide
53-1001810-01
RIPng timers (Continued)
Description
Amount of time (in seconds) during which information about other
paths is ignored.
Amount of time (in seconds) after which a route is removed from the
routing table.
If you adjust these RIPng timers, Brocade strongly recommends setting the same timer values
for all routers and access servers in the network.
Setting the update timer to a shorter interval can cause the routers to spend excessive time
updating the IPv6 route table.
Brocade recommends setting the timeout timer value to at least three times the value of the
update timer.
Brocade recommends a shorter hold-down timer interval, because a longer interval can cause
delays in RIPng convergence.
<garbage-collection-timer>
Update timer: 3 – 65535 seconds
Timeout timer: 9 – 65535 seconds
Hold-down timer: 9 – 65535 seconds
Garbage-collection timer: 9 – 65535 seconds
Learning and advertising of RIPng default routes
Advertising of IPv6 address summaries
Metric of routes learned and advertised on a router interface
44
Configuring RIPng
Default
180 seconds.
120 seconds.
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