Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261590AbUJ0AbU (ORCPT ); Tue, 26 Oct 2004 20:31:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261588AbUJ0AbU (ORCPT ); Tue, 26 Oct 2004 20:31:20 -0400 Received: from pop.gmx.de ([213.165.64.20]:29586 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S261518AbUJ0Aah (ORCPT ); Tue, 26 Oct 2004 20:30:37 -0400 X-Authenticated: #8834078 From: Dominik Karall To: "David S. Miller" Subject: Re: Neighbour table overflow. Date: Wed, 27 Oct 2004 02:30:32 +0200 User-Agent: KMail/1.7 Cc: earny@net4u.de, linux-kernel@vger.kernel.org References: <200410261939.33541.dominik.karall@gmx.net> <200410270011.28818.dominik.karall@gmx.net> <20041026160642.605f7fd7.davem@davemloft.net> In-Reply-To: <20041026160642.605f7fd7.davem@davemloft.net> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2038980.5ceDjSAWoH"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200410270230.34966.dominik.karall@gmx.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1921 Lines: 56 --nextPart2038980.5ceDjSAWoH Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Wednesday 27 October 2004 01:06, David S. Miller wrote: > On Wed, 27 Oct 2004 00:11:26 +0200 > > Dominik Karall wrote: > > On Tuesday 26 October 2004 23:52, Ernst Herzberg wrote: > > > On Tuesday 26 October 2004 19:39, Dominik Karall wrote: > > > > can anybody explain why i get thousands of "Neighbour table > > > > overflow." messages? i didn't get such ones with older kernels > > > > (~2.6.6). > > > > > > Do you set a default gateway? > > > > yes, default gateway is set to our server. > > Do you use a large subnet mask? For example /16 or /8 or > something like that? > > If so, you will need to bump up the neighbour table garbage > collection thresholds under /proc/sys/net/ipv4/neight/default/ > Specifically gc_thresh1, gc_thresh2, and gc_thresh3 > > You probably have a huge number of machines on your subnet. the subnet mask is set to 255.255.0.0, and there are machines from 172.16.0= =2E1=20 to 172.16.1.254. but not all ips are reserved. there are "only" about 100=20 machines in the network. i will try to change the values of gc_thresh*, maybe it helps. thx! dominik --nextPart2038980.5ceDjSAWoH Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) iQCVAwUAQX7sKgvcoSHvsHMnAQJXqgP/eFTl/SzsI83Q/WgZmlaJ9xPCXsSxFbQm 2UmR4cHDZti6mOzKeAOI/O91S+xTkFvdYmVgm+k+TAaUpy6OHa1Lx84y9H7uMa7P 7afLf9+qQ00pi+uUp9srhihpiwt1yEYRWuvc9NaZhYfl9EJdeQmGNy6M7tlSwV07 mxTCNjVqBBU= =Z8MD -----END PGP SIGNATURE----- --nextPart2038980.5ceDjSAWoH-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/