[c-nsp] Faster BGP Failover

Chuck Church chuckchurch at gmail.com
Tue Oct 11 12:15:08 EDT 2011


As long as your neighbor doesn't mind more frequent hellos, there's no
reason you can't lower the hello and hold timers.  My 2821 with a couple
full views has run hello 5, hold 20 seconds for years, no issues.

Chuck

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Vincent Aniello
Sent: Tuesday, October 11, 2011 11:26 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Faster BGP Failover

What can be done to reduce the amount of time it takes BGP to detect the
failure of an Internet connection and start routing traffic through another
Internet connection?

We've already reduced the BGP hold-time to 90 seconds.  Can the hold-time be
reduced further without causing other problems?  I do not believe that BFD
is an option since these are Internet connections.  Are there any other
options for reducing the failover time?

Thanks.

--Vincent



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