Configuring The Rip Invalid Timer; Configuring The Rip Garbage Timer; Configuring The Rip Hold-Down Timer; Reducing The Frequency Of Rip Routing Updates - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

RIP Options

Configuring the RIP Invalid Timer

The RIP invalid timer value defines the time interval, in seconds, during which a route will remain active
in the Routing Information Base (RIB) before it is moved to the invalid state. This timer value must be at
least three times the update interval value.
Use the ip rip invalid-timer
route becomes invalid. Enter the command and the invalid timer value, in seconds. For example, to set an
invalid interval value of 270 seconds you would enter:
-> ip rip invalid-timer 270
The invalid timer range is 3 to 360. The default is 180.

Configuring the RIP Garbage Timer

The RIP garbage timer defines the time interval, in seconds, that must elapse before an expired route is
removed from the RIB.
Note that during the garbage interval, the router advertises the route with a metric of INFINITY.
Use the ip rip garbage-timer
removed from the RIB.
garbage timer value of 180 seconds you would enter:
-> ip rip garbage-timer 180
The garbage timer range is 0 to 180. The default is 120.

Configuring the RIP Hold-Down Timer

The RIP hold-down timer defines the time interval, in seconds, during which a route remains in the hold-
down state.
Whenever RIP detects a route with a higher metric than the route in the RIB, the route with the higher
metric goes into the hold-down state. The route updates with a metric of INFINITY are excluded.
Use the ip rip holddown-timer
the hold-down state.
hold-down timer value of 10 seconds you would enter:
-> ip rip holddown-timer 10
The hold-down timer range is 0 to 120. The default is 0.

Reducing the Frequency of RIP Routing Updates

To optimize system performance, you can reduce the frequency of the RIP routing updates by increasing
the length of the update, invalid, and garbage timers by about 50% above their default values. For exam-
ple:
-> ip rip update-interval 45
-> ip rip invalid-timer 270
-> ip rip garbage-timer 180
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command to configure the time interval that must elapse before an active
command to configure the time interval after which an expired route is
Enter the command and the garbage timer value, in seconds. For example, to set a
command to configure the interval during which a RIP route remains in
Enter the command and the hold-down timer value, in seconds. For example, to set a
OmniSwitch AOS Release 6 Network Configuration Guide
Configuring RIP
September 2009