Weird network connection problem

Robert G. Brown rgb at
Tue Oct 1 11:42:39 PDT 2002

On Tue, 1 Oct 2002, Yudong Tian wrote:

> Hi,
>    We've got 200 nodes running,  with each node having a Biostar MB with a
> built-in Realtek 8192
> NIC chip, and running RH 7.2, 2.4-17. Recently we've seen a weird problem
> with the
> network connection to some of these nodes. About 20 of them will lose their
> network connections
> during the course of a few hours to a few days. And if I just unplug the
> network cable from
> such a node and plug it back in right away, the connection will come back
> up.  Any insight
> where we should look for the problem: hardware? BIOS? Driver  module? Such a
> problem
> does not happen to any nodes randomly. It only occurs to those 20 or so
> particular nodes,
> which are identical to others except their MAC addrs.

What kind of switch are all the nodes plugged into?


Robert G. Brown	             
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at

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