From owner-freebsd-questions Tue Mar 5 20:57:23 2002 Delivered-To: freebsd-questions@freebsd.org Received: from hercules.crossthread.com (hercules.crossthread.com [139.142.137.241]) by hub.freebsd.org (Postfix) with ESMTP id C484237B400 for ; Tue, 5 Mar 2002 20:57:14 -0800 (PST) Received: from dedalus (IRCUser@h24-79-29-99.cg.shawcable.net [24.79.29.99]) (authenticated) by hercules.crossthread.com (8.11.3/8.11.3) with ESMTP id g2657wC57080 for ; Tue, 5 Mar 2002 22:07:58 -0700 (MST) From: "Tim Pushor" To: Subject: Weird IP problem (arp?) Date: Tue, 5 Mar 2002 22:12:30 -0700 Message-ID: <00cf01c1c4cd$845d6ea0$0201a8c0@dedalus> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00D0_01C1C492.D7FE96A0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.3311 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG This is a multi-part message in MIME format. ------=_NextPart_000_00D0_01C1C492.D7FE96A0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi, I am having a strange problem and hoping someone has seen this one before. I have an Internet connected network with several FreeBSD servers sitting on a class 'C' subnet behind a Cisco 1005 series router connected to ISP - simple setup. The symptoms are: The server seemed fine upon initial build. It could talk everywhere - locally, and to the Internet via the 1005 (its default route). I get home and try to get there over the Internet, no go - no response. I go to another machine in the local network and ping or otherwise try to get to the machine in question. Sometimes its immediate, sometimes it takes a short while, but it always comes back. After this I can communicate from my house over the Internet to the server for a while (not sure exactly how long, but I would guess for at least an hour and never more than 4) before it becomes inaccessible again. It would also seem that getting on the box locally and establishing network connections anywhere also cures the problem for a short while. I initially started with a 3COM 3C905C card, and have switched it out with a D-Link to rule out the network card. There was no change. There is nothing at all in the system log (or system logs of neighboring machines). I am running the stock Generic kernel (for now). I do not have access to the router. I am no expert in troubleshooting TCP/IP, but this seems like an arp problem. Has anyone seen this before? Failing this I will probably run tcpdump on one of the other servers, but I guess I am not exactly sure what I am looking for. Thanks for any and all advice/help, Tim ------=_NextPart_000_00D0_01C1C492.D7FE96A0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Hi,
 
I am = having a=20 strange problem and hoping someone has seen this one = before.
 
I have = an Internet=20 connected network with several FreeBSD servers sitting on a class 'C' = subnet=20 behind a Cisco 1005 series router connected to ISP - simple setup. The = symptoms=20 are:
 
The = server seemed=20 fine upon initial build. It could talk everywhere - locally, and to the = Internet=20 via the 1005 (its default route).
 
I get = home and try=20 to get there over the Internet, no go - no response.
I go = to another=20 machine in the local network and ping or otherwise try to get to the = machine in=20 question. Sometimes its immediate, sometimes it takes a short while, but = it=20 always comes back. After this I can communicate from my house over the = Internet=20 to the server for a while (not sure exactly how long, but I would guess = for at=20 least an hour and never more than 4) before it becomes inaccessible=20 again.
 
It = would also seem=20 that getting on the box locally and establishing network connections = anywhere=20 also cures the problem for a short while.
 
I = initially started=20 with a 3COM 3C905C card, and have switched it out with a D-Link to rule = out the=20 network card. There was no change. There is nothing at all in the system = log (or=20 system logs of neighboring machines). I am running the stock Generic = kernel (for=20 now). I do not have access to the router.
 
I am = no expert in=20 troubleshooting TCP/IP, but this seems like an arp problem. Has anyone = seen this=20 before?
 
Failing this I will=20 probably run tcpdump on one of the other servers, but I guess I am not = exactly=20 sure what I am looking for.
 
Thanks = for any and=20 all advice/help,
Tim
 
------=_NextPart_000_00D0_01C1C492.D7FE96A0-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message