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 From:  Bob Gustafson <bobgus at rcn dot com>
 To:  lutz dot niederer at gmx dot net
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] Massive Network Card Errors
 Date:  Tue, 27 Nov 2007 11:13:32 +0100
It might be a bad cable or connector - maybe hairline crack in board..

Set up a 'viewer' to look at errors on line (maybe Wireshark in realtime 
mode) and then wiggle cables and connectors - look for changes in the 
error rate.

A software problem usually gives 0 errors or 100% errors. Hardware 
problem is most probable.

Good luck

Bob G

lutz dot niederer at gmx dot net wrote:
> Hello,
>
> I do have a problem with the network connection between my wrap and my server.  As you can see
from the attached data below, I get lots of errors and I have no idea where they are coming from.  I
changed cables, I changed the duplex/full-duplex.  Nothing helped.  The connection between the Wrap
and the cable modem is without errors, the connection between my server and other networking devices
is without any errors.  On the server there is a linux 2.4.32 kernel and a 4-port tulip-based card
(adaptec).  On the Wrap there is m0n0 version 1.231.
> These errors raise enormously in very short time if I transfer lots of data.  I am pretty sure
that this is the problem why I only get about 10mbit from my provider where I should get more than
20mbit.
>
> If anybody has an idea what I can do, please tell me.
>
> Thanks a lot!
> -lutzn
>
>
>
> M0N0 LAN interface						
> MAC address	00:0d:b9:01:90:ec 					
> IP address	10.252.229.254   					
> Subnet mask	255.255.255.0 						
> Media	100baseTX 						
> In/out packets	20054856/26404594 (1.39 GB/3.40 GB) 			
> In/out errors	0/1577620 						
> Collisions	1586502 						
>
> M0N0 DMZ interface						
> Status	up 						
> MAC address	00:0d:b9:01:90:ed 					
> IP address	10.252.228.254   					
> Subnet mask	255.255.255.0 						
> Media	100baseTX 						
> In/out packets	157816/139828 (62.64 MB/24.41 MB) 			
> In/out errors	0/201 						
> Collisions	300 						
>
>
> SERVER DMZ interface 
> eth3      Link encap:Ethernet  HWaddr 00:C0:95:E0:98:DA
>           inet addr:10.252.228.1  Bcast:10.252.228.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:201426 errors:211 dropped:0 overruns:0 frame:320
>           TX packets:220316 errors:3 dropped:0 overruns:0 carrier:6
>           collisions:0 txqueuelen:1000
>           RX bytes:47272559 (45.0 Mb)  TX bytes:96989387 (92.4 Mb)
>           Interrupt:21 Base address:0x6000
>
> SERVER LAN interface
> eth4      Link encap:Ethernet  HWaddr 00:C0:95:E0:98:DB
>           inet addr:10.252.229.1  Bcast:10.252.229.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:43793462 errors:1601114 dropped:0 overruns:0 frame:2396528
>           TX packets:34521256 errors:3 dropped:0 overruns:0 carrier:6
>           collisions:0 txqueuelen:1000
>           RX bytes:2331563867 (2223.5 Mb)  TX bytes:2690282837 (2565.6 Mb)
>           Interrupt:22 Base address:0x8000
>
>  
>
>
>