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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

1649.0. "defpa and windownt problem on decpc xl" by KAOFS::S_GAGNON () Sun Apr 09 1995 13:32

    Help!
    
    
    	problem statement:
    
    -	When using the DEFPA (sas) module on a decpc XL 486 66mhz running
    window NT V3.5, PC's connected to this server are getting some errors
    (drive failure  continue or retry).  If we take only 4 PC's loading
    applications at the same time, within 2 minutes, you will have problem.
    If we use 2 PC's, no problem.  As soon as the charge become bigger,
    we get errors on network drives.
    
    
    - If the PC's are connected via DECBRIDGE 620, we get drive failure, 
    we just abort the job and restart...and life is back to normal for
    another minute.
    - If PC's are connected vial DECSWITCH 900MX, we also getting drive
    failures and it's even worst,  the 900MX stop forwarding any IP packets.
    
    
    configuration:
    
    - decpc XL 486 66mhz
    	bios version: 1.01 and 1.22 have been tried with same result
    	DEFPA is in PCI slot 2 IRQ: 10 ,enable master: enabled
	WINDOWNT v3.5
    	DEFPA driver version 2.4
    
    - PC's are connected on a DECBRIDGE 620
    
    - On the FDDI ring, there is a DECCONCENTRATOR 500, DECSWITHC 900MX AND
      A DECBRIDGE 620
    
    
    
    Is anybody using have seen a similar problem or have any idea of what
    is wrong?
    
    Sylvain Gagnon
    DTN-623-7122
    vmsmail: mqooa::sgagnon
    
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1649.1NETCAD::STEFANIWelcome to the Revolution!Tue Apr 11 1995 01:2513
    Hi.  I'm the developer for that driver.  When you say that you have
    network driver errors, what do you mean?  Does your connection time out
    or are you seeing corruptions or disk access problems with particular
    files?
    
    What else do you have installed in this system?  Remove any
    extraneous options.  Also, try changing the IRQ to something else and
    set the Latency Timer to 88h instead of leaving it at the Default.
    
    Let me know how it goes.
    
    -Larry
    
1649.2some extra info on problemKAOFS::S_GAGNONTue Apr 11 1995 18:4124
    Hi Larry!
    
    -	Does your connection time out or are you seeing corruptions or disk
    access problems with particular  files?
    
    It looks more like a timeout.  I have also tried with xcopy, and the
    message "general failure reading drive n" show up.
    		"abort, retry , fail"
    
	We answer "abort" and after we still have access to the drive.
    
	no file corruption has been observed
    
    
    	- What else do you have installed in this system?
    
    	  only a de205 and the defpa is in the PC but it's not used when the
     DEFPA is used...we have also tried without the de205 in the PC
    
    	- The latency timer is still set 88h
    	- Only the irq 10 has been tried
    
    ** when errors occurs, the ethernet segment is used at about 50%
    
1649.3DEFPA driver problemKAOFS::S_GAGNONTue May 30 1995 10:158
    	A problem with the DEFPA driver has been discovered.  The problem was
    showing up much faster with slower CPU.
    
    	The version that fixed our problem was a pre-release version that
    we received from the group who write the driver.  So, version higher than
    2.4 should fix this problem
    
    
1649.4Defpa problems with PCXL and WNT3.51AUSSIE::MCNAMARAWed Jul 10 1996 20:3912
    G'Day All,
    		I have a very similar problem to note .0. Same type of PC
    but running WNT3.51 SP3. TCP/IP ping,connections to servers via FDDI to
    ethernet bridge (DECswitch 900) work fine. Connection to servers on the
    FDDI hang when trying to display the directory. If the PC does not have
    permission to access the share it connects just fine.
    
    I have tried both v2.5 and V2.7 of the defpa driver.
    
    Any ideas?
    
    Regards Scott     
1649.5NETCAD::STEFANIWed Jul 10 1996 22:2918
    >>		I have a very similar problem to note .0. Same type of PC
    >>but running WNT3.51 SP3. TCP/IP ping,connections to servers via FDDI to
    >>ethernet bridge (DECswitch 900) work fine. Connection to servers on the
    >>FDDI hang when trying to display the directory. If the PC does not have
    >>permission to access the share it connects just fine.
    
    What kind of servers are you attaching to on FDDI?  Are you going DEFPA
    to DEFPA?  Windows NT 3.51 to Windows NT 3.51?
    
    >>I have tried both v2.5 and V2.7 of the defpa driver.
    
    Run File Manager and bring up properties on the
    
    		\WINNT35\SYSTEM32\DRIVERS\DEFPA.SYS
    
    file.  I want to verify that you have the latest driver installed.
    
    - Larry
1649.6DEFPA to DEFEA and WNT351AUSSIE::MCNAMARAFri Jul 12 1996 01:4919
    G'Day Larry,
    
    The server is a DEC 2000 running WNT351 SP2 and a DEFEA connected SAS
    to a DECconcentrator 500 to the ring then via a DECswitch 900 to the
    PC.
    
    The PC is running WNT351 SP3. We have tried IRQ 15 and IRQ 5.
    
    DEFPA.SYS Dated 28/05/96 18:29:34 Version 1.82 Size 29,024.
    
    We had to change back to ethernet for the moment but can try any tests
    after hours.
    
    I have an ALPHAstation 400 with a DEFPA and I can connect to the server
    fine, but if I try a share on the PC I get the same results. ie. file
    manager hangs.
    
    Thanks & Regards Scott
                                                                    
1649.7Get it right!AUSSIE::MCNAMARAFri Jul 12 1996 01:525
    G'Day Again,
    		The DECswitch is for the Ethernet connection, for the FDDI
    the PC connects via UTP to a DECconcentrator 900 on the ring.
    
    Regards Scott