From owner-freebsd-isp Tue Jul 17 7: 3:24 2001 Delivered-To: freebsd-isp@freebsd.org Received: from mail.hostorama.com (208-128-72-15.ipv4.intur.net [208.128.72.15]) by hub.freebsd.org (Postfix) with SMTP id 8241637B406 for ; Tue, 17 Jul 2001 07:03:15 -0700 (PDT) (envelope-from eric@ericwalters.com) Received: (qmail 44917 invoked from network); 17 Jul 2001 14:24:33 -0000 Received: from unknown (HELO netmon1) (12.45.139.50) by 0 with SMTP; 17 Jul 2001 14:24:33 -0000 From: "Eric Walters" To: "Dev" , Subject: RE: HELP NEEDED. :) ARP problems - ARP incomplete showing up on our network Date: Tue, 17 Jul 2001 09:03:13 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 In-Reply-To: <3B5438A1.B7A54A1D@wserv8.inetu.net> Importance: Normal Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org I have seen this problem on Cisco switches in the past. Do you have any hubs plugged into the switches or have them cascaded with cross-over cables or anything? Have you checked the MAC Address table on the switches to make sure the entries are still there? I would suspect the switches first. Have you done any router or switch code upgrades recently? -----Original Message----- From: owner-freebsd-isp@FreeBSD.ORG [mailto:owner-freebsd-isp@FreeBSD.ORG]On Behalf Of Dev Sent: Tuesday, July 17, 2001 8:08 AM To: freebsd-isp@freebsd.org Subject: HELP NEEDED. :) ARP problems - ARP incomplete showing up on our network We have been having a problem for the last 24-36 hours on our network. We have about 350 servers (50% FreeBSD, 50% NT/2000 and a few Linux) Servers have started to be inaccessible through our router (and sometimes through other servers). The ARP table in our router will show an INCOMPLETE next to the Arp entry which is having trouble. These problems surface about every 30 minutes and servers will go down about every 4 hours. This problem seems to affect ONLY FreeBSD servers (and 2 Cobalt/Linux servers). In total, about 20-30 servers. Does anyone have any ideas on what we can check? While our network is largely flat, we do route blocks of addresses directly to servers, our arp table in our router is fairly small (about 500 entries). Any help would be greatly appreciated. We have tried a lot, but cannot figure out what is causing the problem. We did not have this problem before, and many of the servers affected have been running for 1-2 years without any problems. We use 3COM and Intel NIC's, Nortel switches (303, 310) and a 7206VXR routers. Thanks. -Dev To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message