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BGP Flapping due to closed TCP connection

manish.gautam
Level 1
Level 1

bgp connection is flapping and on checking the neighbor statstics we get following message - keepalive are termporarily in throtlle due to closed tcp window

3 Replies 3

royalblues
Level 10
Level 10

This mostly seems to an MTU issue.

What is the MTU configured on both ends?

Narayan

Thanks mate...yes it was MTU on one of the interfaces which was dissimilar...cheers.

just a doubt if can help with...i beleive MTU is negotiated while establishing a tcp connection and which ever is smaller from both the end interfaces is selected. so why did bgp have a problem ?

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