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Conference smaug::snagwy

Title:SNA GATEWAY NOTEFILE
Notice:Note 1.* -> kits and doc, 288.* -> obtaining product support
Moderator:EDSCLU::GARROD
Created:Fri Feb 07 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:7116
Total number of notes:28576

7009.0. "LU6.2 server and LU deactivation" by IB004::CODINA () Thu Feb 13 1997 05:55


	Hi,

	I have a question about LU6.2 server process. My customer starts
	the server successfully so we can see (with ncl) a session 
	started in our local LU.

	If for any reason our PU is deactivated-activated, Peer Server is
	capable of recover the Active state for both PU and LU.

	And now the question: what happen with the session started by LU6.2 
	server? Customer says that he has to stop/start the server to restore
	the session. Is there any possibility for automatic recovery of
	the session?

	Thanks in advance for any input,
	Herminia Codina
	MCS - Barcelona
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7009.1Should work automaticallyEDSCLU::PORCAROFri Feb 14 1997 11:147
    Customer should not have to start the session. If he attempts
    a conversation, the session will start for him at that time.
    
    This assumes he negotiated session limits for the modename prior
    to the LU going inactive.
    
    Bill
7009.2They are activated as needed...EDSCLU::BELANGERDEBUGGING. The art of creating better bugs!Fri Feb 14 1997 11:1710
    
    LU6.2 only proactively activates sessions after CNOS negotiation when
    the conwinner auto-activate limit is not zero.  Otherwise, it will
    activate a session as an additional session is required and there is
    sufficient session limit for the additional session.  stopping/starting
    the LU6.2 Server process is not necessary.  Use the activate session
    option of the /usr/lib/sna/lu62_config utility to activate sessions if
    one is needed/desired before a conversation requests one.
    
    ~Jon.
7009.3FREE::CAMBRIAWe're just one PTF from never talking to VTAM againFri Feb 14 1997 11:3919
>                      <<< Note 7009.0 by IB004::CODINA >>>
>                     -< LU6.2 server and LU deactivation >-
[deleted]
>	And now the question: what happen with the session started by LU6.2 
>	server? Customer says that he has to stop/start the server to restore
>	the session. Is there any possibility for automatic recovery of
>	the session?

The peer server does _not_ tell the LU62 Server that an inop'ed line is now
contacted again <g>.  Therefore, even if the min contention winner session 
limit is non-zero, the LU62 Server will not know to automatically activate 
that number of sessions.

As others have suggested, you need to manually activate a session (the 
CNOS session I would guess, since peer-server cannot have one LU use more 
than one link at a time, this session would also be lost on link discontact.)

MikeC

7009.4Nope- but if I had a dime for every time I was asked.DELNI::BARBER_MINGOLet me DANCE for youTue Feb 18 1997 18:0113
    Hi,
    	People have written endless programs to address the issue.
    They write programs that continue activating sessions into perpetuity.
    In this way, they are re-connected if they need to stay connected.
    There is no automatic detect.
    
    	If you happen to have a token ring...
    	You CAN parse the system log, it tells you when you've lost
    and recovered the ring.  Based on THAT, you know you have to restart
    your sessions,and re-negotiate your limits.
    
    Ugly, but true.
    Cindi