Date: Wed, 17 Aug 2011 09:48:59 -0400 From: Mike Tancsa <mike@sentex.net> To: Sami Halabi <sodynet1@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: strange problem FreeBSD-8.1-Release Message-ID: <4E4BC6CB.40305@sentex.net> In-Reply-To: <CAEW%2BogYJ8TVHPgt17Bm6VHsgzdnmVV8vZyjyPT0PuMPNuuV7=w@mail.gmail.com> References: <CAEW%2BogYJ8TVHPgt17Bm6VHsgzdnmVV8vZyjyPT0PuMPNuuV7=w@mail.gmail.com>
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On 8/17/2011 7:46 AM, Sami Halabi wrote: > Hi, > I have a FBSD router base on version 8.1-RELEASE-p4. > Today at 13:00 approx i had a sudden fall down of the traffic on the graphs > on all ports. > the strange thing is that no connection was lost, but the traffic like went > down. > on the logs i had these lines only: > Aug 17 12:59:45 bgpServer kernel: em2: Watchdog timeout -- resetting > Aug 17 12:59:45 bgpServer kernel: em2: link state changed to DOWN > Aug 17 12:59:48 bgpServer kernel: em2: link state changed to UP > > anyone ever faced this problem? any ideas how i can track down what happened > there? Until I saw the em errors, I was thinking you are just running into the 32bit counter limitations of snmp. e.g. an example graph at http://www.tancsa.com/overflow.png more info at http://www.cisco.com/en/US/tech/tk648/tk362/technologies_q_and_a_item09186a00800b69ac.shtml However, the em2 suggests a possible driver error. There have been a number of bug fixes to the em driver since 8.1-R. If possible, going to 8.2 or even RELENG_8 might help. also, what does sysctl -a dev.em show ? ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/
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