RE: Ethernet Question

[Adrian Buxton <abuxton internal ozemail com au>]

As a test you could try plugging the machines directly into each other with
a crossover cable. This will then rule out the hub and 2 cables as being the
problem if you still get errors.

In the case that you do get errors you could count on one of the NIC's being
faulty.

Regards,
Adrian


-----Original Message-----
From: mike universe ne mediaone net
[mailto:mike universe ne mediaone net]
Sent: Monday, 16 August 1999 8:12
To: redhat-list redhat com
Cc: recipient.list.not.shown
Subject: Ethernet Question


Evening:

Trying to narrow down a problem here with my internal network.  I have two
DaynaPORT PCI ethernet cards with the DEC Tulip chipset.  Up until last
night, I hadn't noticed any problems with them.  I'm running Red Hat 6.0,
and, as of last night, had all of the patches applied.  I have a very
small network setup with just my Linux box and a Windows NT 4.0 box.  I
have Samba 2.0.3-8 installed and everything appeared to be working fine.

I set up ipchains to allow my NT box to get out, I can browse the web and
response appears normal.  I get email, can telnet, etc from the NT box as
well.

Ok, I went to Oracle's site last night and looked into downloading a file
from there.  This file is rather large, 250+ MB, but I'm on a cable modem.
I was able to download the file to the Linux box using Netscape 4.6.  Now,
I wanted to copy this file over to my NT box, so normally what I do is
open Network Neighborhood on the NT machine, and pull up my home
directory.  As soon as I did this, the collision light on my Asante hub
went nuts.  Here is my latest ifconfig:

eth0      Link encap:Ethernet  HWaddr 00:80:19:35:9A:D6
          inet addr:24.218.83.113  Bcast:24.218.83.255  Mask:255.255.252.0
          UP BROADCAST RUNNING  MTU:1500  Metric:1
          RX packets:162158 errors:0 dropped:0 overruns:0 frame:0
          TX packets:93092 errors:0 dropped:0 overruns:0 carrier:0
          collisions:1041 txqueuelen:100
          Interrupt:10 Base address:0xec00

eth1      Link encap:Ethernet  HWaddr 00:80:19:35:9A:0B
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:646253 errors:0 dropped:0 overruns:0 frame:0
          TX packets:338310 errors:0 dropped:0 overruns:0 carrier:0
          collisions:290731 txqueuelen:100
          Interrupt:15 Base address:0xdc00

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:3924  Metric:1
          RX packets:162 errors:0 dropped:0 overruns:0 frame:0
          TX packets:162 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0

What I'm looking to do is to try and determine if the problem is something
to do with the way I have the machine configured, or if there is a problem
with the card.  I don't have a lot of money, and can't really afford to go
out and buy another card.  I don't have another ethernet card lying around
either to test.

This particular set-up has worked ok up until this point, but I can't
state this positively, because I've never tried to copy a file this large
before.

Any ideas where to start looking for a problem?  Any way to test whether
or not the card is working properly without taking it out and comparing it
to another card?

- Mike


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