Subject: Odd networking failures
To: None <port-vax@NetBSD.ORG>
From: Boris Gjenero <bgjenero@undergrad.math.uwaterloo.ca>
List: port-vax
Date: 04/11/1998 21:17:34
My MicroVAX II (with DEQNA) just totally dropped off my network.  It
wasn't replying to anything, including ping.  I also couldn't send
anything from it.  Then I did ifconfig qe0 down and then up, and that
restored everything.  This is the third time that this happened in the
last couple of days and it *never* happened before that.  None of the
incidents generated anything in the log and for some curious reason it
never happened while I was actively talking to the MicroVAX.

The changes that I performed recently are:
- Mandelspawn (distributed Mandelbrot, sends lots of UDP packets)
installed and used on MicroVAX II and other hosts.
- DECstation 3100 running Ultrix 4.4 added to network and lots of X now
done over the network.

So, what's going on...  I've really pounded on networking before with
lots of file transfers and NFS and I didn't even have one hiccup.  Is
this this some DEQNA lockup that NetBSD doesn't know how to deal with? 
Does NetBSD object to lots of UDP packets being sent back and forth?  Is
Ultrix using some bizzare protocol that upsets the VAX?  Ideas?

-- 
|  Boris Gjenero <bgjenero@undergrad.math.uwaterloo.ca>              |
|  Home page:  http://www.undergrad.math.uwaterloo.ca/~bgjenero/     |
|  "Luke, you're going to find that many of the truths we cling to   |
|  depend greatly on our own point of view." - Obi-Wan Kenobi, ROTJ  |