From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp121.iad.emailsrvr.com (smtp121.iad.emailsrvr.com [207.97.245.121]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id E335721F0BA for ; Wed, 20 Feb 2013 08:09:05 -0800 (PST) Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp42.relay.iad1a.emailsrvr.com (SMTP Server) with ESMTP id 673AF14804F; Wed, 20 Feb 2013 11:09:04 -0500 (EST) X-Virus-Scanned: OK Received: from legacy11.wa-web.iad1a (legacy11.wa-web.iad1a.rsapps.net [192.168.4.97]) by smtp42.relay.iad1a.emailsrvr.com (SMTP Server) with ESMTP id 48FD8148614; Wed, 20 Feb 2013 11:09:04 -0500 (EST) Received: from reed.com (localhost.localdomain [127.0.0.1]) by legacy11.wa-web.iad1a (Postfix) with ESMTP id 3974527B8001; Wed, 20 Feb 2013 11:09:04 -0500 (EST) Received: by apps.rackspace.com (Authenticated sender: dpreed@reed.com, from: dpreed@reed.com) with HTTP; Wed, 20 Feb 2013 11:09:04 -0500 (EST) Date: Wed, 20 Feb 2013 11:09:04 -0500 (EST) From: dpreed@reed.com To: "William Katsak" MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_20130220110904000000_91113" Importance: Normal X-Priority: 3 (Normal) X-Type: html In-Reply-To: <8948C7F6-3F35-46D5-9367-02B79553E409@gmail.com> References: <8948C7F6-3F35-46D5-9367-02B79553E409@gmail.com> Message-ID: <1361376544.23218370@apps.rackspace.com> X-Mailer: webmail7.0 Cc: "cerowrt-devel@lists.bufferbloat.net" Subject: Re: [Cerowrt-devel] Switch Issue X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Feb 2013 16:09:06 -0000 ------=_20130220110904000000_91113 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =0ANot the 3800's switch, but lots of other ones. Often caused by a human = cabling error. E.g. a cable connecting one port on a switch to another, w= hich "amplifies" broadcast/multicast traffic into a storm that is also broa= dcast to other switches, locking up the switch and others.=0A =0AJust befor= e the switch failed were any events logged related to port up/down? Not th= at it needs to be the 3800 switch that is the cause.=0A =0A-----Original Me= ssage-----=0AFrom: "William Katsak" =0ASent: Wednesday, = February 20, 2013 11:01am=0ATo: "cerowrt-devel@lists.bufferbloat.net" =0ASubject: [Cerowrt-devel] Switch Issue=0A= =0A=0A=0AHello,=0A=0AJust wanted to see if anyone has seen an issue like th= is:=0A=0AI have a 3800 running Sugarland at a remote site. It was running n= ice and reliably, connected to the local network by a VLAN trunked connecti= on (I have interfaces for the default VLAN, and VLANS 100 and 200 passing t= hrough). Last night it suddenly stopped working. There seems to be no data = flowing through the switch at all, even though I can ssh to the router, reb= oot, poke at it, etc. from over the Internet.=0A=0AI see no error messages = regarding the switch in the logs or dmesg. Anyone else see a 3800 switch cr= ap out unceremoniously?=0A=0AThanks,=0ABill Katsak=0A=0A=0A=0A_____________= __________________________________=0ACerowrt-devel mailing list=0ACerowrt-d= evel@lists.bufferbloat.net=0Ahttps://lists.bufferbloat.net/listinfo/cerowrt= -devel ------=_20130220110904000000_91113 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

= Not the 3800's switch, but lots of other ones.  Often caused by a huma= n cabling error.   E.g. a cable connecting one port on a switch t= o another, which "amplifies" broadcast/multicast traffic into a storm that = is also broadcast to other switches, locking up the switch and others.

= =0A

 

=0A

Just before the switch failed were any events logged related to port= up/down?  Not that it needs to be the 3800 switch that is the cause.<= /p>=0A

 

=0A

-----Original Message-----
From: "William Katsak" <wkatsa= k@gmail.com>
Sent: Wednesday, February 20, 2013 11:01am
To: "c= erowrt-devel@lists.bufferbloat.net" <cerowrt-devel@lists.bufferbloat.net= >
Subject: [Cerowrt-devel] Switch Issue

=0A
=0A

Hello,
<= br />Just wanted to see if anyone has seen an issue like this:

I= have a 3800 running Sugarland at a remote site. It was running nice and re= liably, connected to the local network by a VLAN trunked connection (I have= interfaces for the default VLAN, and VLANS 100 and 200 passing through). L= ast night it suddenly stopped working. There seems to be no data flowing th= rough the switch at all, even though I can ssh to the router, reboot, poke = at it, etc. from over the Internet.

I see no error messages rega= rding the switch in the logs or dmesg. Anyone else see a 3800 switch crap o= ut unceremoniously?

Thanks,
Bill Katsak


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Cerowrt-devel mail= ing list
Cerowrt-devel@lists.bufferbloat.net
https://lists.buffer= bloat.net/listinfo/cerowrt-devel

=0A
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