Editing Routing Information Protocol (section)

==Timers==
The routing information protocol uses the following timers as part of its operation:<ref name="Aaron Balchunas">{{cite web|last=Balchunas|first=Aaron|title=Routing Information Protocol (RIP v1.03)|url=http://www.routeralley.com/guides/rip.pdf |archive-url=https://ghostarchive.org/archive/20221010/http://www.routeralley.com/guides/rip.pdf |archive-date=2022-10-10 |url-status=live|publisher=routeralley.com.|access-date=25 April 2014}}</ref>

;Update Timer
:Controls the interval between two gratuitous Response Messages. By default the value is 30 seconds. The response message is broadcast to all its RIP enabled interface.<ref name="Aaron Balchunas"/>
;Invalid Timer
:The invalid timer specifies how long a routing entry can be in the routing table without being updated. This is also called as expiration Timer. By default, the value is 180 seconds. After the timer expires the hop count of the routing entry will be set to 16, marking the destination as unreachable.<ref name="Aaron Balchunas"/>
;Flush Timer
:The flush timer controls the time between the route is invalidated or marked as unreachable and removal of entry from the routing table. By default the value is 240 seconds. This is 60 seconds longer than Invalid timer.  So for 60 seconds the router will be advertising about this unreachable route to all its neighbours. This timer must be set to a higher value than the ''invalid timer.''<ref name="Aaron Balchunas"/>
;Holddown Timer
:The hold-down timer is started per route entry, when the hop count is changing from lower value to higher value. This allows the route to get stabilized. During this time no update can be done to that routing entry.  This is not part of the RFC 1058. This is [[Cisco Systems|Cisco's]] implementation.  The default value of this timer is 180 seconds.<ref name="Aaron Balchunas"/>