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Command Reference Guide
If an attached interface goes down, the associated route is immediately (within the same random
five-second interval) triggered. The next regular update excludes the failed interface. This is the so-called
first hand knowledge rule. If a gateway has first hand knowledge of a route failure (connected interfaces) or
reestablishment, the same action is taken. A triggered update occurs, advertising the route as failed
(metric equals 16) or up (normal metric) followed by the normal scheduled update.
The assumption here is that if a gateway missed the triggered update, it will eventually learn from another
gateway in the standard convergence process. This conserves bandwidth.
RIP-Related Definitions:
Route
Gateway
Hop
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Update
60000CRG0-35E
A description of the path and its cost to a network.
A device that implements all or part of RIP (a router).
A metric that provides the integer distance (number of intervening
gateways) to a destination network gateway.
A broadcast or multicast packet to port 520 that indicates the route for a
given destination network.
An advertisement sent on a regular 30-second interval, including all routes
exclusive of those learned on an interface.
Copyright © 2012 ADTRAN, Inc.
Global Configuration Mode Command Set
1311
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