BGP flapping

[thiyagarajankalaiselvan]

Hi All,

On one of my routers, I'm facing BGP flapping issue once in every 45 seconds.

Troubleshooting done from my side:

1- There is no packet drop to neigbour IP

2- There is no routing flap that is causing the packet drop to the neighbour IP

3- There is no physical link flap that is causing BGP flap

4- BGP hello and hold timer value configured on both side of BGP peer is same.

Intresting thing is once in every 44th second BGP is flapping.

Can anybody share few troubleshooting tips/trick to troubleshoot the issue further.

Regards,

Thiyagu

[Harold Ritter]

Hi Thiyagu,

Have you checked the logs to see if there was any related messages?

Regards

[blau grana]

Hello,

Can you provide output of #show ip bgp neighbors IP_ADDRESS_of_NEIGHBOR?

Best Regards

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