*BSD News Article 21194


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From: burgess@hrd769.brooks.af.mil (Dave Burgess)
Newsgroups: comp.os.386bsd.bugs
Subject: Re: ed0: warning - reciever ring buffer overflow
Date: 19 Sep 1993 20:18:46 -0500
Organization: Armstrong Laboratory, Brooks AFB, TX
Lines: 37
Message-ID: <27j0e4$q1b@hrd769.brooks.af.mil>
References: <RAND.93Sep17103923@agassiz.cas.und.NoDak.Edu> <g89r4222.748432320@kudu> <RAND.93Sep19131545@agassiz.cas.und.nodak.edu>
NNTP-Posting-Host: hrd769.brooks.af.mil

In article <RAND.93Sep19131545@agassiz.cas.und.nodak.edu> rand@cs.UND.NoDak.Edu (Douglas K. Rand) writes:
>>>>>> "Rand" == Douglas K. Rand <rand@cs.und.nodak.edu>
>>>>>> "Geoff" == Geoff Rehmet <g89r4222@kudu.ru.ac.za>
>
>    Rand> ed0: warning - reciever ring buffer overflow
>
>    Geoff> In my experience this can happen occasionally (when you are
>
>I probably wasn't very clear in my original post. In a span of 10
>minutes I've gotten over 100 of these warnings. They almost always
>happen when I'm heavily using NFS, and they even seem to cause
>
>	nfs server <host>:<mnt-point>: not responding
>	nfs server <host>:<mnt-point>: is alive again
>
>messages. 

In my experience, it is a matter of someone else on the net chewing it
up.  I will regularly get hundreds of these messages.  It is nearly
always when the network gets VERY busy, or during (what our engineer
referes to as) packet storms.  One of our legs on the base network has
an intermittent short that nobody has been able to locate, and it causes
serious problems for all of the users on the net.  I see the messages,
and confirm that other folks in the subnet are having problems too.

If I ever see this while everyone else is having no problems, the most
messages I ever get is one or two.  From everything I have seen, the
only difference between the old behaviour and the new behaviour is that
the new behaviour puts up a warning message when it dumps the packet,
instead of not notifying you.

As a rule, I have ignored the messages reasonably safely.  
-- 
------
TSgt Dave Burgess
NCOIC AL/Management Information Systems Office
Brooks AFB, TX