timers basic
This command configures the RIP update timer, timeout timer, and garb age-
collection timer. Use the
no
form to restore the defaults.
Syntax
timers basic
update-seconds
no timers basic
update-seconds – Sets the update timer to the specified value, sets the
timeout time value to 6 times the update time, and sets the garbage-
collection timer to 4 times the update time.
(Range for update timer: 15-60 seconds)
Command Mode
Router Configuration
Default Setting
Update: 30 seconds
Timeout: 180 seconds
Garbage collection: 120 seconds
Command Usage
• The update timer sets the rate at which updates are sent. This is the
fundamental timer used to control all basic RIP processes.
• The timeout timer is the time after which there have been no update
messages that a route is declared dead. The route is marked inaccessible
(i.e., the metric set to infinite) and advertised as unreachable. However,
packets are still forwarded on this route.
• After the timeout interval expires, the router waits for an interval specified by
the garbage-collection timer before removing this entry from the routing table.
This timer allows neighbors to become aw are o f a n inva lid r oute p rior to
purging it.
• Setting the update timer to a short i nte rval c an c ause t he rout er to spend an
excessive amount of time processing updates.
• These timers must be set to the same values for all router s in the netwo rk.
Example
This example sets the update timer to 40 seconds. The timeout timer is
subsequently set to 240 seconds, and the garbage-collection timer to 160 secon ds.
Console(config-router)#timers basic 15
Console(config-router)#
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IP Routing Commands
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