Article View: comp.os.netware.misc
Article #269Re: Client 32 hangs during file copy, inconsistent logins...
From: Chuck Bell
Date: Fri, 23 Aug 1996 00:00
Date: Fri, 23 Aug 1996 00:00
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7290 bytes
I've been having this same problem since I first installed Client32 with
just a generic NE2000 card on a 3.11 network!
In fact here are some of the details from a note I was writing to post
here:
I've been semi-successfully runing Windows 95 with the Client32 kit on a
3.11
network for several months but I'm having a few problems that I need some
help with. I've installed all the OS and NLM updates and my network has
been
very stable for a long time. I've also installed the various upgrades and
patches for Windows from Microsoft.
The most annoying problem I'm having usually occurs when I am copying a
file
to or from the server and Windows 95, either from within a DOS box, or
Explorer. The problem occurs often even just printing to a network
printer.
What occurs is this:
Say, I'm copying a file from drive C: to F: like so (an actual example):
COPY C:\NOVELL\LIBUP7.EXE
Usually I get a popup message box that says:
----------------------------------------------------------------------------
----------
Network Status
Client32: Please wait while system retries request to ATLANTIS_TRADING_CO.
To stop waiting, press Enter.
Netware will then return an error and try to reconnect in the
background
----------------------------------------------------------------------------
-------
I press Enter... and see various things.... on one try I got
C:\NOVELL\LIBUP7.EXE => F:\NOVELL\NW311\LIBUP7.EXE
1 File copied
Another time I just kept getting the message box back about three more
times
and then got:
ACCESS DENIED
"F:\NOVELL\NW311\LIBUPT7.EXE"
Another time I got
>
and I typed in C: <enter> and got back my C: prompt but
found I was disconnected from the network.
Sometimes my computer just locks up on this indefinitely.
I haven't noticed a particular pattern that jumps out at me on when it is
liable to start behaving like this but that it nearly always occurs when
copying large files.
I often get a similiar message box when printing to a network printer. I
also
get similiar apparently random results. Sometimes I get a printout and
sometimes it never even seems to get to the print queue or my pc locks up.
Usually logging out, rebooting my computer and logging back in again helps
briefly. I've gone over my settings pretty carefully, installed the
SHORTAFX.NLM on my server, etc (although I have not installed long file
name
support on the server yet).
If any of you wizards have any suggestions or have seen these symptoms and
have
any ideas for me, I'm all ears. What am I doing wrong, or what have I
overlooked?
I think all my settings on the file server are ok but I wonder if I need to
tune it to Windows 95 or tune Windows 95 to my server's communications
settings. Packet lengths? Watchdog time-outs?
Chris Tilbury <Chris.Tilbury@warwick.ac.uk> wrote in article
<4v995i$hns@violet.csv.warwick.ac.uk>...
> ddbs2@aol.com (DDBS2) wrote:
>
> [snip]
> >The second problem we have is copying files from a network drive to the
> >local hard drive. After copying about a megabyte or more of files, the
> >machine seems to hang, but the mouse is still active. A CTRL-ALT-DEL
> >brings up the message that the machine is busy or unstable (WFW v3.11
> >on DOS v6.22).
>
> I've seen this; it happens between my workstation (a P166 system with
> a 3Com 3C509B) and our server (which is a P75 with a 3Com 3C579).
>
> I can recreate the problems easily, and with two different results,
> depending upon Client32's configuration.
>
> The first case, when using the 32bit LAN drivers, causes the machine
> to hang during periods of intense network activity. This is with the
> 3C5X9.LAN that's included with the Client32 DOS/Windows distribution.
> As in your case, the message about the system either being busy or
> unstable appears when you perform the old 3 fingered salute.
>
> In the second case, when using the 16bit LAN driver, the machine
> doesn't hang - rather, a modal dialog box appears in the middle of the
> screen with words to the effect that [application name] is retrying
> requests to forest - press ok to return and error and let client32
> retry in the background. Leaving this for a little while causes the
> dialog to disappear and things to continue as normal.
>
> The former may be a problem with the 3Com 32bit LAN driver (I've seen
> reports that for some reason, it has difficulty reconnecting). The
> latter though, is also reproducible when I exchange the 3C509 for an
> Intel EtherExpress card (I've never tried the 32bit LAN driver for the
> EtherExpress) and use EXP16ODI.COM.
>
> The Novell support database has a TID number 2911651 ; "Client32 locks
> when using COPY with Netframe". The jist of this document is that
> client32 is able to transmit packets faster than other
> stations/servers can process them. When Client32 blasts packets at a
> slower NIC/server this can cause connection problems (disconnecting
> them or even locking the local PC). Because NETX (and presumably the
> VLMs) were slower, this wasn't likely to arise.
>
> This appears consistent with what I've been seeing - the message about
> attempting to reconnect to the server, etc.
>
> The solution (allegedly) is to change the server Maximum Physical
> Receive Packet size at the server, increasing it; by doing this, you
> make fewer but larger packets, which the server can hopefully deal
> with more effectively (this can't exceed the cache buffer size,
> according to the TID - or in other words, the smallest block size of
> any volume on the server).
>
> The reason I say allegedly is that I've done this (gone from 4202 to
> 8192, as far as I can) and it's still happening. I'm tempted to
> replace the 3C579, which isn't the nicest card in the world, but am
> reluctant to do so without some concrete evidence that this is going
> to actually resolve the problem. I've also upped the minimum packet
> receive buffers from 100 to 200. I am very concerned about what's
> going to happen if I go live with this on other systems and they all
> start to outperform the server during periods of heavy network
> activity.
>
> (The default packet size for Client32 appears to be 4736).
>
> >Hitting escape brings us back to a screen with the top
> >quarter blacked out. We are using regular VGA drivers...
> (as it happens, this last bit isn't really important)
>
> Anyone else run into this? And have some suggestions?
>
> Cheers
>
>
> Chris
>
>
>
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fe659,9d4bea1f636bff3c X-Google-Attributes: gidfe659,public X-Google-Thread: f8bf7,6e87c9e48980a78e X-Google-Attributes: gidf8bf7,public From: "Chuck Bell" <cbell@airmail.net> Subject: Re: Client 32 hangs during file copy, inconsistent logins... Date: 1996/08/23 Message-ID: <01bb9134$c0821ca0$a64bb2cc@cbell.airmail.net> X-Deja-AN: 176087362 references: <4v0v46$em2@newsbf02.news.aol.com> <4v995i$hns@violet.csv.warwick.ac.uk> organization: Atlantis Trading Corp. newsgroups: comp.os.netware.misc,bit.listserv.novell