IP event dampening

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The requirement for very fast network convergence caused by voice-data integration has prompted many network designers to tune their routing protocols for faster convergence. The resulting network usually becomes highly susceptible to repetitive failures (e.g. a flapping interface), which can cause recurring instabilities in large parts of the network and significant data loss.

The IP Event Dampening feature, introduced in Cisco IOS release 12.3, temporarily disables the IP processing and routing protocols on a flapping interface and thus increases the overall stability of the network.

The IP event dampening reacts only to repeated interface line protocol state changes. It does not dampen other routing-related events like flapping OSPF or BGP adjacencies.

Read more in the Increase the Stability of your Network IP corner article ...

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