Article View: comp.sys.dec
Article #1808Re: Decnet Drops Connect (?)
From: tundra
Date: Fri, 03 Aug 1990 17:10
Date: Fri, 03 Aug 1990 17:10
49 lines
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2817 bytes
In case they are of any interest,
here is a summary of the responses I received on the
LOST CONNECTION problem so far. Thanks to everyone for the
suggestions. You would have to read a lot of manuals
and have a very sharp eye to come up with such good
ideas.
I have run sys$system:dtsend tests. I am currently
trying the RECNEXINTERVAL parameter increase and looking
at various memory and io parameters. Only time will tell
if these changes are successful.
Thanks again,
-------- john kemp ( ( )_ internet - kemp@uiatma.atmos.uiuc.edu
----- ( ( __) decnet - uiatmb::kemp
--- univ of illinois (_ ( __) bitnet - {uunet,convex}
-- dept of atmos sci .(____). !uiucuxc!uiatma!kemp
- 105 s gregory ave ... phone - (217) 333-6881
- urbana, il 61801 ... fax - (217) 444-4393
From: "Carl Karcher, Room 535 WC, 3-5896" <KARCHER@don.waisman.wisc.edu>
Subject: Re: Decnet Drops Connect (?)
The network is flakey. What the messages mean is SCS communications (not decnet)
has been lost and then restored in less than 20 seconds (if sysgen parameter
recnexinterval is at the default). Cluster traffic (ala SCS) is far more
sensitive to network problems that decnet. If the network disturbance lasts
longer than 20 seconds things will crash. I would increase recnexinterval
(say to 1 minute) until your network problems are solved. This is a dynamic
parameter so it can be done online (.e.g using SYSMAN commands PAR SET then PAR
WRITE ACTIVE commands). In a large network its a good idea to increase
recnexinterval permanently. Otherwise one misconnected PC can crash your LAVC.
Carl Karcher Internet: KARCHER@WAISMAN.WISC.EDU
University of Wisconsin-Waisman Center Bitnet: KARCHER@WISCPSL Madison,
Wisconsin, USA PSTnet: (608) 263-5896
Subject: Decnet Drops Connect (?)
Sender: Craig Paul <PAUL@kuhub.cc.ukans.edu>
Reply-To: paul@kuhub.cc.ukans.edu
What does dtsend tell you about line utilization? If you get less than
6% line utilization you've probably got physical line problems. Since
your explanation makes these two nodes sounds as though it is your
entire network I'd expect line utilizations in the 10s of percents, at
least!
Technical Details
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!tundraReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!tundra From: tundra@ux1.cso.uiuc.edu Newsgroups: comp.sys.dec Subject: Re: Decnet Drops Connect (?) Message-ID: <16500003@ux1.cso.uiuc.edu> Date: 3 Aug 90 17:10:00 GMT References: <184519@<1990Aug2> Lines: 49 Nf-ID: #R:<1990Aug2:184519:ux1.cso.uiuc.edu:16500003:000:2325 Nf-From: ux1.cso.uiuc.edu!tundra Aug 3 12:10:00 1990