
Customizing DVMRP
117355-D Rev 00
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Setting the Unconfirmed Route Timer
The unconfirmed route timer determines how long DVMRP advertises a route as
unreachable before it removes the route from the routing table. The difference
between this value and the route expiration timeout value represents the time
period that the route will be advertised as unreachable without subsequent
refreshment.
By default, DVMRP sets the unconfirmed route timer to 340 seconds (5 minutes,
40 seconds). You can use the BCC or Site Manager to set the value from 40
through 8000 seconds (2 hours, 13 minutes, and 20 seconds). Enter a value that is
greater than the value you specified for the route expiration timer to allow enough
time for the route to be advertised as unreachable.
Using the BCC
To reset the unconfirmed route timer, navigate to the global DVMRP prompt (for
example,
stack; ip; dvmrp
) and enter:
unconfirmed-route-timeout
<
seconds>
seconds
is an integer from 40 through 8000 indicating the maximum number of
seconds that DVMRP advertises an unreachable route.
For example, the following command sets the unconfirmed timer to 1000 seconds
(16 minutes, 40 seconds):
dvmrp#
unconfirmed-route-timeout 1000
dvmrp#
Note:
DVMRP timers must be the same throughout the network.
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