Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 177)

Brocade ICX 6650 Layer 3 Routing Configuration Guide 159
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RIPng timers
RIPng timers
Table 32 describes the RIPng timers and provides their defaults.
You can adjust these timers for RIPng. Before doing so, keep the following caveats in mind:
• 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.
Updating RIPng timers
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.
Brocade(config)# ipv6 router rip
Brocade(config-ripng-router)# timers 45 135 10 20
Syntax: [no] timers update-timer timeout-timer hold-down-timer garbage-collection-timer
Possible values for the timers are as follows
• Update timer: 3 through 65535 seconds
• Timeout timer: 9 through 65535 seconds
• Hold-down timer: 9 through 65535 seconds
• Garbage-collection timer: 9 through 65535 seconds
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.
TABLE 32 RIPng timers
Timer Description Default
Update Amount of time (in seconds) between RIPng routing updates. 30 seconds.
Timeout Amount of time (in seconds) after which a route is considered unreachable. 180 seconds.
Hold-down Amount of time (in seconds) during which information about other paths is
ignored. 180 seconds.
Garbage-collection Amount of time (in seconds) after which a route is removed from the routing
table.
120 seconds.