[Sheflug] Errors on eth0

["Dawson, Alan" <DawsonA [at] xxxxxxxxxxxxxxxxxx>]

Hi all,


I have a linux box acting as a router on a 10 mbit line, 
the other end is a Cisco 2621 with dual fast ethernet ports.  

I'm not getting the performance from the line I would hope, 
and I'm attempting to track the problems.

The PC is a 400Mhz Pentium II  with 2 ethernet cards simply routing 
and a small amount of Packet filetering. (dropping icmp-type 8)
which is I think pings (this is to filter MS Welchia worm scanning traffic)

Using mrtg to measure bandwidth usage I don't seem to be able to get more 
than 2Mbit from the line.
This is similar to the numbers I get from copying files using windows
robocopy

Doing a ifconfig on the lan side

clownerouter:~ # ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:04:75:D2:4C:2E
          inet addr:172.25.1.250  Bcast:172.25.255.255  Mask:255.255.0.0
          inet6 addr: fe80::204:75ff:fed2:4c2e/10 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8512868 errors:0 dropped:0 overruns:1 frame:0
          TX packets:6239407 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:4022267518 (3835.9 Mb)  TX bytes:2136425933 (2037.4 Mb)
          Interrupt:12 Base address:0x1400

which looks OK

but on the wan side

clownerouter:~ # ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:C0:CA:15:61:BF
          inet addr:192.168.2.1  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::2c0:caff:fe15:61bf/10 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6173121 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5774684 errors:362353 dropped:0 overruns:0
carrier:724706
					^^^^^^^^^^^^
          collisions:372551 txqueuelen:100
          RX bytes:2129446956 (2030.7 Mb)  TX bytes:3315793152 (3162.1 Mb)
          Interrupt:10 Base address:0x4400

I get a lot of errors.

Is this BAD.  should I replace the NIC,  or is it the WAN line itself. or
could it be the 2621?

Any thoughts ?

Alan Dawson



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