
Configuring IP Multicasting and Multimedia Services
4-12 117355-A Rev. A
Configuring DVMRP Timers
When a router adds or updates a route, it uses configurable timers to control the
useful life of the route.
Setting the Route Expiration Timer
The route expiration timer determines how long DVMRP waits for an update
message indicating that a route is reachable. Upon expiration of this timer, this
route is advertised as unreachable until it is refreshed or until it is garbaged.
By default, DVMRP sets the route expiration time at 200 seconds.You can use
Site Manager to set the route expiration time from 20 to 4000 seconds.
Note: DVMRP timers must be the same throughout the network.
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose Protocols.
The Protocols menu opens.
2. Choose IP. The IP menu opens.
3. Choose Multicast. The Multicast menu opens.
4. Choose DVMRP. The DVMRP menu opens.
5. Choose Global. The DVMRP Global Configuration
window opens.
6. Set the Route Expiration Timeout
parameter. Click on Help or see the
parameter description on page A-3.
7. Click on Save. You return to the Configuration Manager
window.
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