If the open message is received within 6 seconds than it will continue to forward the traffic along the stalepath for a period of 120 seconds. This would mean that if there was a switchover on the control plane than there should be a OPEN message sent by the restarting peer within 6 seconds and if that does not happen than it will reset the neighbor relationship within 9 seconds. In addition also configured the BGP GR restart-time to be 6 seconds however the stalepath time is configured for 120 seconds. This does make sense as I assume that if there is a notification message sent to tear down the session and there is no open message sent as required by the Graceful Restart mechanism it would be useless. Could you please confirm if my understanding is correct on that?Īlso currently I have configured a hello/hold time of 3 and 9 seconds respectively for the neighbor relationship across the firewall. Per recommendations in cisco documents it seems that the BGP restart-time for Graceful Restart should be less than the BGP hold time. Per recommendations in cisco documents it seems that the BGP restart-time for Graceful Restart should be less than the BGP hold time. I was trying to get a relationship between the BGP graceful-restart restart-timer and the BGP neighbor holddown time and BGP graceful-restart stalepath-time and the BGP neighbor holdown time.
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