From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Marco C. Coelho" <maillist1@argontech.net>
Date: Mon, 22 Oct 2007 21:46:44 +0000
Subject: [LARTC] neighbor table overflow
Message-Id: <471D1A44.40503@argontech.net>
List-Id: <lartc.vger.kernel.org>
References: <200710230146.27081.peet@altlinux.org>
In-Reply-To: <200710230146.27081.peet@altlinux.org>
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To: lartc@vger.kernel.org

I've got a linux router pushing 600-1000 pppoe connections through it. =20
I'm getting a screen error "Neighbor Table Overflow" after this box has=20
been up for between 1 week and 1 month.  When this is happening, routing=20
slows to a crawl if at all.  Then dies.  I've added:

# Added to stop "neighbor table overflow" messages in the kernel
net.ipv4.neigh.default.gc_thresh1Q2
net.ipv4.neigh.default.gc_thresh2 48
net.ipv4.neigh.default.gc_thresh3@96
# Added to increase IP contrack number (was getting to max)
net.ipv4.ip_conntrack_max=99999

to sysctl.conf to increase the size, but this only seems to delay the=20
problem.

Any thoughts?

Marco
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