Weird network connection problem

Donald Becker becker at
Tue Oct 1 12:05:24 PDT 2002

On Tue, 1 Oct 2002, Yudong Tian wrote:

>    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.

Which driver, including version number, are you running?

> 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.

Normally this would be a driver problem...

>  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.

But this does hint at a hardware problem.

Donald Becker				becker at
Scyld Computing Corporation
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993

More information about the Beowulf mailing list