Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!ccu.umanitoba.ca!herald.usask.ca!alberta!aunro!aupair.cs.athabascau.ca!atha!decwrl!stanford.edu!unix!hplabs!pyramid!lstowell From: lstowell@pyrnova.pyramid.com (Lon Stowell) Newsgroups: comp.sys.novell Subject: Re: Steps to switch Novell token-ring net from 4->16Mbps? Message-ID: <148170@pyramid.pyramid.com> Date: 13 Mar 91 23:46:11 GMT Sender: daemon@pyramid.pyramid.com Reply-To: lstowell@pyrnova.pyramid.com (Lon Stowell) Organization: Pyramid Technology Corp., Mountain View, CA Lines: 43 In article <39102@netnews.upenn.edu> lau@desci.wharton.upenn.edu (Yan K. Lau) writes: >We have a network of IBM PS/2 Model 70s and a Model 80 as a server >running Novell software 286 V2.15 C. It is running on a token-ring >at 4 Mbps. I'm a beginner at this Novell stuff but one of my tasks >is to get it running at 16 Mbps. I tried using the Reference disks >and setting all the machines to 16 Mbps but the software was flakey >after that. There were noticeable delays after commands are issued. >Sometimes, I'd get an network error: Error sending on network. >Abort, Retry? Sometimes the retry works, sometimes it doesn't. >I figured I must be doing something wrong so I reset everything back >to 4 Mbps and decided to ask you all about it. What do I need to do >to get this token-ring running at 16 Mbps with Novell? I've been >looking through the manuals but I haven't found any mention of this. >Suggestions?? This is probably an easy question but we've all got to >start somewhere. Thanks much. > Can't imagine why Novell would care about 4 or 16 mbit....there MIGHT be some timers (low level) which are being set wrong..but would expect these to be more trouble at 4 than 16. Any way you can beg, borrow, or steal a Lanalyzer....just as a wild guess, you might just be seeing a lot of MAC level errors on the medium as a result of the speed change. If you have a station on the ring set up as the Ring Error Monitor, look for an increase in Isolating and Non-Isolating errors when you increase the speed. Are you running UTP (Type 3 in Token Ring terms) or Type 1 or what? Any idea what your adjusted ring length is? How long are the lobe (drop) cables? And what type are they? How long are the trunk (Ring In/Ring Out) cables, (total length) and what type are they? > >Yan. >-- > )~ Yan K. Lau lau@kings.wharton.upenn.edu The Wharton School > ~/~ Sheenaphile 128.91.11.233 University of Pennsylvania > /\ God/Goddess/All that is -- the source of love, light and inspiration!