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Conference noted::decnis

Title:	DEC Network Integration Server (DECNIS)
Notice:	Please read note 1 to use this conference effectively
Moderator:	MARVIN::WELCH

Created:	Wed Sep 18 1991
Last Modified:	Thu Jun 05 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	3660
Total number of notes:	15082

3530.0. "Proxy Load Host Crash" by looker.shr.dec.com::kaufmann () Mon Feb 03 1997 20:49


While attempting to down-load a DECNIS, via an HDLC link, the DECNIS 
acting as the Proxy Load Host crashes. In the diagram below, when
dhcptest2 performs the load sequence, immediately after the SCRIPT 
FILE load request is completed, dhcptest1 crashes. The "Reason" 
given by dhcptest1 is "System Unusable". I can provide a DUMP and
all NCL scripts and any additional info upon request.

Can anyone shed any light on this ?

Ed Kaufmann, x237-2893
kaufmann@shr.dec.com



1. The Load Host is a DUNIX V3.2D-1 acting as a BOOTP load host for
   the DECNIS.

2. All DECNIS's are 600's running v3.1.8.

     DUNIX
     Bootp Load
     Host
       |
       | x.y.176.25
       |                                            Ethernet
   ===========================================================
                  |
                  |  x.y.176.4
                 NIS1
                  |  x.y.240.3
                  |                                 Ethernet
   ===========================================================
                           |
                           | x.y.240.100
                          dhcptest1  (PROXY LOAD HOST)
                           | x.y.243.1
                           |
                           | HDLC Link
                           |
                           | x.y.243.101
                          dhcptest2
                           | x.y.242.101
                           |                         Ethernet
   ===========================================================

T.R	Title	User	Personal Name	Date	Lines
3530.1	please supply a pointer to the dump	MARVIN::RIGBY	No such thing as an alpha beta	`Tue Feb 04 1997 11:01`	2
	Please supply a pointer to the dump and the NCL scripts that set up the MOP client.
3530.2	empty packet at end of profile file	MARVIN::RIGBY	No such thing as an alpha beta	`Wed Feb 05 1997 10:05`	7
	Analysing the dump reveals that MOP has crashed while handling the legal empty packet at the end of a file which is an exact multiple of 512 bytes in length. In this case it was the modem connect profile file. By using a combined image/script/profile file this problem doesn't happen because the image file is known to be a block structured file and it is handled in a separate code path. When the IPMT case arrives we'll add it to the list of things that need fixing.