Weird network connection problem

[Robert G. Brown]

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?

   rgb

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