From: Alexandru Dragoi <alex@zoomnet.ro>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] neighbor table overflow
Date: Tue, 23 Oct 2007 11:56:48 +0000 [thread overview]
Message-ID: <471DE180.5040708@zoomnet.ro> (raw)
In-Reply-To: <200710230146.27081.peet@altlinux.org>
Marco C. Coelho wrote:
> I've got a linux router pushing 600-1000 pppoe connections through
> it. I'm getting a screen error "Neighbor Table Overflow" after this
> box has been up for between 1 week and 1 month. When this is
> happening, routing 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™999
>
> to sysctl.conf to increase the size, but this only seems to delay the
> problem.
>
> Any thoughts?
>
> Marco
> _______________________________________________
> LARTC mailing list
> LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
What about checking your routing table? you may have link routes for
massive subnets (like 85.0.0.0/8 or 140.20.0.0/16). Some programs prefer
to use "standard" netmask of classes A and B.
# ip rou |grep link
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next prev parent reply other threads:[~2007-10-23 11:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-22 21:46 [LARTC] neighbor table overflow Peter V. Saveliev
2007-10-22 21:46 ` Marco C. Coelho
2007-10-22 22:35 ` Grant Taylor
2007-10-23 11:56 ` Alexandru Dragoi [this message]
2007-10-23 20:32 ` Grant Taylor
2007-10-23 20:43 ` Jeff Welling
2007-10-23 21:04 ` Grant Taylor
2007-10-23 21:10 ` Marco C. Coelho
2007-10-23 21:23 ` Grant Taylor
2007-10-23 21:27 ` Marco C. Coelho
2007-10-24 10:19 ` Alexandru Dragoi
2007-10-24 15:19 ` Marco C. Coelho
2007-10-24 16:06 ` Alexandru Dragoi
2007-10-25 15:08 ` Marco C. Coelho
2007-10-25 16:30 ` Alexandru Dragoi
2007-11-19 22:36 ` Marco C. Coelho
2007-11-19 23:15 ` darko
2007-12-07 17:17 ` Marco C. Coelho
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