low bgp timers usually done to allow faster hsrp failover result colin
Sent from my iPhone > On 27 Oct 2015, at 08:20, Nick Hilliard <n...@foobar.org> wrote: > >> On 27/10/2015 08:31, marcel.durega...@yahoo.fr wrote: >> I'm asking because we see more and more peering partners which force the >> hold timer to a lower value, and when BGP negotiate the timer, the lowest >> hold timer is the winner. > > You need to be careful with this. On larger IXPs, there will be a wide > variety of kit with different capabilities, which will usually work well in > most circumstances, but which may not have enough cpu power to handle edge > cases like e.g. ixp maintenance or flaps when you get large amounts of bgp > activity. A low bgp timer might be fine for, say an asr9k or an mx960 with > the latest RE/RSP, but would be actively harmful if one of your peers is > using an mx80 or a sup720. > > Nick > >
