[zebra 22553] Re: Apparent hanging when using BGP with two ISP's

[Sean Reifschneider]

On Mon, Aug 22, 2005 at 04:14:04PM -0400, Joseph Kotran wrote:
># reply going out a different interface.
>net.ipv4.conf.all.rp_filter = 1

This is almost certainly your problem.  With BGP, you want the rp_filter
off.  This means that if the system receives a packet on one of your lines,
which would normally be routed back out the other line, that it will be
dropped.   Because of the asymmetry that BGP produces, this is a frequent
occurance.

Sean
-- 
 Idleness is not doing nothing. Idleness is being free to do anything.
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Sean Reifschneider, Member of Technical Staff <jafo at tummy.com>
tummy.com, ltd. - Linux Consulting since 1995: Ask me about High Availability