The original question:
> Last night the following messages appeared on the console of one of our
> Sun servers:
>
> Jun 18 00:54:59 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:54:59 eagle vmunix: ie0: no carrier
> Jun 18 00:55:00 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:55:00 eagle vmunix: ie0: no carrier
> Jun 18 00:55:00 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:55:00 eagle vmunix: ie0: no carrier
> Jun 18 00:55:01 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:55:01 eagle vmunix: ie0: no carrier
> Jun 18 00:55:01 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:55:01 eagle vmunix: ie0: no carrier
> Jun 18 00:55:01 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:55:01 eagle vmunix: ie0: no carrier
> Jun 18 00:55:02 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:55:02 eagle vmunix: ie0: no carrier
> Jun 18 00:55:04 eagle vmunix: ie0: Ethernet jammed
> Jun 18 00:55:04 eagle vmunix: ie0: no carrier
>
> We occasionally get the 'no carrier' message, but I've never seen the
> 'Ethernet jammed' message before. Can anyone shed any light on it?
>
> The server is a 3/280 running SunOS 4.1.1.
The consensus of most respondants was that the 'Ethernet jammed' message
could be caused by:
(1) Loose drop cable to the Sun
(2) Congestion on the network
(3) A bad transceiver
(4) Electrical noise being picked up on the Ethernet cable
(5) Termination problems on the Thick Ethernet
Even though none of the other machines on the thicknet segment (20 +)
reported the same error, I think my problem was caused by the terminator
on one end of the thicknet. There had been a minor leak in the roof next
to the terminator on Thursday Afternoon, and I checked the terminator this
morning and it was slightly loose. So I hope this was a one off thing.
Thanks to:-
=========
"Robert D. Worsham" <worsham@com.aer>
hellerpd@brutus \(\).aa.ab.com \(\) (\) (Dave\(PD\) Heller)
cperry@org.mitre.gateway (Chris Perry)
Craig Kruck <kruckc@com.hitachi.hitachi>
shandelm@com.jpmorgan (Joel Shandelman FIMS Information Systems - 212-648-4480)
Rogerio Rocha - DI - BVL <rogerio@pt.bvl>
"Colin Macleod" <cmacleod@uk.ac.dundee.mcs>
canuck@edu.rice.masc38 (Mike Pearlman)
mharris@com.jpmorgan (Michael Harris)
poffen@com.slb.ate.sj (Russ Poffenberger)
Mr T Crummey (DIJ) <tom@uk.ac.bangor.sees>
era@edu.ucar.ncar (Ed Arnold)
Javier Fernandez Baldomero <jfernandez@es.ugr>
baumann@edu.llumc.proton (Michael Baumann)
eeikhey@se.ericsson.eeiua (Kevin Heagney)
Larry Nelson <nelson@mil.army.cecer.zorro>
shankar@com.att.ulysses
tims@com.sybase (Tim Swilling)
dougj@edu.ufl.health.iplab (Doug Jones)
dougf@Gov.Nasa.Jpl.dgr (Doug Freyburger)
heiser@com.ray.ed.tdwr (Bill Heiser)
bagate!blazer.babss.basg.com!tkw@uk.ac.nsfnet-relay (Terry White)
jb@edu.cwru.MAE.nimue (Jim Berilla)
perryh@com.rain.pluto (Perry Hutchison)
David Fetrow <fetrow@edu.washington.biostat>
derekt@gov.stpaul.pwcs (Derek Terveer)
THOANG@gov.llnl.ARAC
glenn@au.com.uniq (Glenn Satchell - Uniq Professional Services)
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