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Prefix flapping

Hi Experts

What are the reasons of the Prefix flapping in global BGP Table

thanks

jamil

  • WAN Routing and Switching
1 REPLY

Prefix flapping

Hi Jamil,

they could be many... few of them could be

- link instability

- misconfiguration

- mistmatching limit of the max allowed number prefixes in the updates

- IGP issues that will propagate in their synchronization with BGP their flapping status

- too short timers (indeed BGP has been designed to have a slow convergence) 

If it is a customer of yours flapping , you can use/configure dampening in your BGP process otherwise you can summarise your prefixes as workaround to this issue.

Alessio

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