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Article #156

Re: carrier errors on ethernet

#156
From: Raymond Doetjes
Date: Mon, 26 Jun 2000 00:00
32 lines
2232 bytes
This looks like a defected card.
Speciaclly when you have collisions in a FULL-DUBLEX environment thats in
normal operation impossible.
My guess is that the interface driver (hardware) on one of the NICS is
defected and generates unwanted signals and/or drops signals (wich is more
likely for the carrier error).

Try exchanging one of the crads with another. If it still happens swap the
digital cards and you will find the true defected card.

Raymond

entr0py wrote:

> What are "carrier" errors (from ifconfig)? I tried connecting to a switch
> and also using a cross-over cable to another nic, and got the errors with
> both setups. The NICs are DEC 21143s, everything setup and reporting as
> 100MB full duplex, but i still have the odd collision (see below) and slow
> ftps. I seem to get a higher proportion of errors when i load the ethernet,
> and throughput r as well. tulip driver, mandrake 7, other machine on the
> net is NT4.
>
> tnx
> ent.
>
> eth0      Link encap:Ethernet  HWaddr 00:00:F8:1F:C4:AA
>           inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:228466 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:244285 errors:46 dropped:0 overruns:0 carrier:46
>           collisions:42 txqueuelen:100
>           Interrupt:9 Base address:0xe800
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From: Raymond Doetjes <raymond.doetjes@phonax.com>
Subject: Re: carrier errors on ethernet
Date: 2000/06/26
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