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Article #5494

Re: Ethernet controller errors -- need help

#5494
From: George Robbins
Date: Tue, 02 Jan 1990 23:29
46 lines
2592 bytes
In article <3830@jhunix.HCF.JHU.EDU> barrett@jhunix.HCF.JHU.EDU (Dan Barrett) writes:
> 
> 	I posted this before but got NO responses.  Can anyone help?
> 
> 	We have a VAX 8530 running Ultrix 2.0.  Its ethernet board has
> been spitting out 10 error messages per minute.  They look like this:
> 
> OS EVENT TYPE                  104.     CONTROLLER ERROR 
> OPERATING SYSTEM                        ULTRIX 32 
> ERROR SYNDROME                          BVP ERROR 
>                                         FREE QUEUE EXHAUSTED 
> 
> 	We had our ethernet board swapped, but the messages didn't go
> away.  Has anybody else experienced this?  I had to shut off /etc/elcsd
> because the error messages were overflowing our disk!!!

Well there are always those questions where all one can do is guess...

1) When did the problem start?  Gradual or attendent to some other changes?

2) Is the error rate constant or time / workload?

3) Is your network heavily loaded?  What other kinds of machines present?

4) Are you running DECnet and/or TCP?

5) Do you have any intersting ethernet devices or just a wire and transceivers?

6) Do you have any way of evaluating ethernet loading?  Indicator lights for
   jams and collions?  Performance meters ala Sun? Terminal servers which
   accumulate collision statistics?

7) Is there anything you do that affects the error rate?  Things that you
   can unplug or net segment you can isolate?

Anyway, you can tell I don't know, but the error message is suggestive of
something getting swamped or exceeded.  You can play by either reducing
the net load or perhaps you can get DEC to bring by one of those new DEBNI
ethernet controllers to see if that makes the problem go away.  You could
of course any number of system hardware diseases or screaming interrupt
problems...  You might also ask in comp.os.vms since it might be and OS
independent sort of problem...
-- 
George Robbins - now working for,	uucp: {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)
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Message-ID: <9194@cbmvax.commodore.com>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cbmvax!grr
References: <3830@jhunix.HCF.JHU.EDU>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cbmvax!grr
From: grr@cbmvax.commodore.com (George Robbins)
Newsgroups: comp.sys.dec
Subject: Re: Ethernet controller errors -- need help
Message-ID: <9194@cbmvax.commodore.com>
Date: 2 Jan 90 23:29:32 GMT
References: <3830@jhunix.HCF.JHU.EDU>
Reply-To: grr@cbmvax.commodore.com (George Robbins)
Distribution: usa
Organization: Commodore, West Chester, PA
Lines: 46