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Conference azur::mcc

Title:DECmcc user notes file. Does not replace IPMT.
Notice:Use IPMT for problems. Newsletter location in note 6187
Moderator:TAEC::BEROUD
Created:Mon Aug 21 1989
Last Modified:Wed Jun 04 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:6497
Total number of notes:27359

677.0. "DNA IV Support for DECSA-Router ?" by MFRNW1::SCHUSTER (Karl Schuster @MFR Network Services) Wed Jan 30 1991 07:27

    We have some DECSA DECnet Routers in a big network.
    
    When I try to register the node I get the following error:
	The requested operation cannot be completed
    	MCC Service Error = Insufficient resources at target entity
    
    I first thought that another user already has a NML connection
    to the DECSA (DECSAs support only 1 NML user simultaneously).
    
    But a NCP> TELL decsa .... works.
    
    Has anyone made the same experience, or are there restricions
    in the DNA IV AM with DECSAs ( PDP Systems ) ?
    
    Regards
    Karl Schuster
T.RTitleUserPersonal
Name		DateLines
677.1DECSA's need a little time....TOOK::CAREYWed Jan 30 1991 14:3917
    
    
    DECSA's under load apparently take a little time to clean up from a
    link that has been dropped.  We have found that DECrouters definitely
    take up to a second from dropping a link until a new link can be
    formed, and have modified the DECnet AM appropriately to deal with this
    behavior.
    
    Basically, it appears that the routers keep their resources focussed on
    their main task, which is routing traffic, at the expense of management
    performance.  We have also taken steps to reduce the load that we put
    on these systems when attempting to monitor or manage them.  This work
    will be available in the next kit for V1.1 that comes out.
    
    -Jim Carey
677.2DECmcc V1.0 isn't too good with DECSA'sTOOK::CAREYThu Jan 31 1991 20:3922
    
    Karl,
    
    After corresponding with you a little more, I realized that you were 
    running MCC V1.0.
    
    Unfortunately, MCC V1.0 has a lot of trouble dealing with systems like
    the DECSA that are only capable of managing a single link.
    
    This oversight has been corrected for all but the most extreme cases
    with V1.1 of DECmcc.  The load problem I discuss in .1 is a problem
    that we've noticed only recently with the much more capable V1.1
    version of the DECnet AM.
    
    We have discussed the types of requests to stay away from to show
    maximum capability with the V1.0 AM, and I'm afraid that that's about
    all we can do until you can install V1.1.
    
    Thanks for the note.
    
    -Jim Carey