Network questions

[Knobi der Rechnerschrat]

Hallo,

  I have a question for the network people. Since three years I operate
an ethernet based LAN with 5 IRIS 3100's, one 4D/70, three PC's and 6
terminal servers. Since that time we never saw any single network error.
Two month ago we got a fibre optic link to our university network. That
link connects via a bridge to our coax based yellow-cable. Since that I
see lots of Ierrs and Collisions on the 'netstat -i' output of our
IRIS'es. My question is: Is there a simple way to get more information
about the reason and source of this errors? The errors occur during
phases of "high" load on the ethernet (about 10-15% of the bandwith).
It follows a snapshoot of 'netstat -i':

Name Mtu   Network     Address            Ipkts Ierrs    Opkts Oerrs  Coll
enp0 1500  130.83      pc4               501286    36    96730     0   240
lo0  4208  loopback    localhost         174370     0   174370     0     0

Any comments are welcome.

Regards
Martin Knoblauch

TH-Darmstadt
Physical Chemistry 1
Petersenstrasse 20
D-6100 Darmstadt, FRG

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