Hi Adam, how can i tell if fast external failover is enabled? I haven't had any luck finding the command or the Junos documentation. Same question for Next-Hop Address Trac(k)ing
thanks! -andy On Sat, Mar 15, 2014 at 5:56 AM, Vitkovský Adam <[email protected]>wrote: > You can verify whether the fast external failover is enabled for the > peer/globally (should be on by default). > -in that case the 3min hold down timer does not need to expire when the > link to neighbor fails and the adj-rib-in is flushed immediately. > > Also you can verify whether the BGP Next-Hop Address Tracing is enabled > (should be on by default). > When enabled BGP does not have to rely on the Scanner process running > every 60sec to detect that the NH for the prefixes is unreachable. > With Next-Hop Address Tracing BGP registers NHs with RIB process which > notifies BGP (delay can be tuned) each time status/metric of the prefix > corresponding to NH changes. > > The above are techniques local to a BGP speaker. > The other aspect is the propagation of BGP updates throughout the AS. > To eliminate the propagation delay there are features like local-repair or > PIC (also local a BGP speaker with a failed link). > > adam > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
