(no subject)

Donald Becker becker at scyld.com
Wed Jan 16 11:03:07 PST 2002

On Tue, 15 Jan 2002, Chris Harwell wrote:

> a little off topic.

This should be on the eepro100 at scyld.com list.

> i'm having alot of carrier errors on a eth2: Intel Corporation 82557 
> [Ethernet Pro 100] for the head node connection to the outside world.

What driver version?  What is the detection message?

> trying to search for information on carrier errors is proving difficult.

It's pretty rare, and the problem is almost always a duplex mismatch.

> does anyone know a defintion for them and/or where to look for more info?

Bad cables or a broken link partner are the first places to check.

> eth2      Link encap:Ethernet  HWaddr 00:03:47:73:8C:A0  
>           RX packets:7805917 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:8046787 errors:0 dropped:0 overruns:8 carrier:19182
>           collisions:23104 txqueuelen:100 

Hmmm, this is likely reporting out-of-window collisions.
You are half duplex mode (from the non-zero collision count).
Check that your link partner is also in half duplex mode.  If on a
repeater, check all connected devices are in half duplex mode.

Donald Becker				becker at scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993

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