From owner-freebsd-net@FreeBSD.ORG Thu Dec 13 09:51:57 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id BD8DEE2F for ; Thu, 13 Dec 2012 09:51:57 +0000 (UTC) (envelope-from kpielorz_lst@tdx.co.uk) Received: from mail.tdx.com (mail.tdx.com [62.13.128.18]) by mx1.freebsd.org (Postfix) with ESMTP id 37D3E8FC12 for ; Thu, 13 Dec 2012 09:51:56 +0000 (UTC) Received: from MightyAtom.tdx.co.uk (storm.tdx.co.uk [62.13.130.251]) (authenticated bits=0) by mail.tdx.com (8.14.3/8.14.3/) with ESMTP id qBD9lOBB040219 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 13 Dec 2012 09:47:24 GMT Date: Thu, 13 Dec 2012 09:47:12 +0000 From: Karl Pielorz To: freebsd-net@freebsd.org Subject: Arp table size - any adjustments? Message-ID: <523DE5571B5BE81B8BA1846F@MightyAtom.tdx.co.uk> X-Mailer: Mulberry/4.0.8 (Win32) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Dec 2012 09:51:57 -0000 Hi, I have an FreeBSD amd64 9-STABLE system running as a router for various bits and pieces - this has a 'lot' of hosts on it's LAN (literally thousands) - most are NAT end points etc. Looking at the output from 'arp -a -n' it regularly lists 2,000-3,000 entries. Is there anything I need to tune for this kind of quantity (or more), or is it all 'auto-adjusting' on 9.0-S onwards? Thanks, -Karl