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Date:      Mon, 29 Jan 1996 13:59:50 -0800
From:      David Greenman <davidg@Root.COM>
To:        "Sean T. Lamont" <lamont@abstractsoft.com>
Cc:        questions@FreeBSD.ORG
Subject:   Re: Hints on network dropping 
Message-ID:  <199601292159.NAA00937@Root.COM>
In-Reply-To: Your message of "Mon, 29 Jan 1996 11:57:32 PST." <9601291957.AA24777@zebu.serv.net> 

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>Hi there. I have been experiencing problems with a FreeBSD system
>dropping its network connection entirely. It's a fairly high trafficked
>httpd server, and that's about it. It's an ASUS P133 motherboard with
>an NE2000 clone network card and an IDE disk system.
>
>What happens is, for about 10 minutes at a time (at least once per
>day) the network will drop entirely ; the site isn't ping'able,
>no logging occurs on the http server. In about 10 minutes, it comes
>up and runs fine.
>
>I'm at somewhat of a loss here since I have an identical kernel
>running on our news server, which has some extended resources like
>processes. It almost sounds like a driver problem, but as I said,
>the NE2000 clone is working fine for us on the other server.
>
>Any hints for me before I consider swapping out OS's?

   The problem is likely caused by running out of mbuf clusters. Add:

options "NMBCLUSTERS=2048"

   ...to your kernel config file. I'd also recommend getting a PCI ethernet
controller.

-DG

David Greenman
Core Team/Principal Architect, The FreeBSD Project



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