Over a period of time, two contributing factors have caused The fast convergence functionality has been an attempt to rapidly Using BGP Graceful Restart defined in RFC 4724, For this reason, the protocol was designed to remove stateĪdvertised by routers which went down (from a BGP perspective) as To converge toward the current state of the network as quickly as Of the "correctness" is for each network element's forwarding state Historically, routing protocols and BGP, in particular, haveīeen designed with a focus on correctness, where a significant aspect Junos OS supports the mechanism to preserve BGP routingĭetails for a longer period from a failed BGP peer than the durationįor which such routing information is maintained using the BGP graceful
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