How to change default timers in Routing Information Protocol

How to change default timers in Routing Information Protocol

 

In this article I will show you: How to change default timers in Routing Information Protocol

As you all know by default the all 4 timers (Update, Invalid, hold and flush) are set to 30 Secs, 180 Secs, 6o Secs and 240 Secs)

However, you can always change it for faster convergence time. RIP timers should not be modified without a detailed understanding of how RIP works. If you modify RIP timers, make sure that all routers have the same timers configured.

Potential problems with decreasing the timer values are that updates will be issued more frequently and can cause congestion on low-bandwidth networks, and that congestion in the network is more likely to cause routes to go into hold state. resulting routing flapping.

You can change the timers from RIP process.

Router(config)# router rip
Router(config-router)# timers basic 20 120 120 160

The timers basic command allows us to change the update (20), invalid
(120), hold-down (120), and flush (240) timers.

To return the timers back to their defaults:
Router(config-router)# no timers basic

Also you can use “show ip protocols” command to view current configuration of timers and many other components such as version etc..

R1(config-router)#do show ip protocols
*** IP Routing is NSF aware ***

Routing Protocol is “rip”
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 27 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Redistributing: rip
Default version control: send version 1, receive any version

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