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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

4369.0. "Central/remote MCC maps" by CTOAVX::BEAULIEU () Mon Jan 11 1993 11:00

    
    Hi,
    
    I have a simple question, my customer has a central site running MCC
    EMS and several smaller sites also running MCC EMS at each site. Now
    the question is, can the customer have on a single map at the central
    site, showing all the alarms fired at the remote sites. The sites are
    polling terminal servers, bridges, nodes, concentrators etc. I need
    this all on one map. Different notification windows will be ok, but I
    need one map.
    
    Thanks, Mike Beaulieu
    
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4369.1we did it using the collectorGOSTE::CALLANDERMon Jan 11 1993 11:3012
    you can do what we have done at shows (some one else might also
    have another suggestion).  What we do is to set up an action
    procedure on each rule that we want to send to the central site.
    This procedure simply sends the rule information through the 
    data collector to the central site.  Since the alarms FM tells
    you want entity the rule is for as well as the severity, it is
    easy to pass the command such that it will turn the right icon
    the right color. The only hitch is that you need a datacollector
    in the right domain.  We did it by having a collector for each
    map/domain/manager.
    
    
4369.2what about map files??CTHQ::WOODCOCKMon Jan 11 1993 11:4625
>    you can do what we have done at shows (some one else might also
>    have another suggestion).  What we do is to set up an action
>    procedure on each rule that we want to send to the central site.
>    This procedure simply sends the rule information through the 
>    data collector to the central site.  Since the alarms FM tells
>    you want entity the rule is for as well as the severity, it is
>    easy to pass the command such that it will turn the right icon
>    the right color. The only hitch is that you need a datacollector
>    in the right domain.  We did it by having a collector for each
>    map/domain/manager.
    
 As Jill indicates the above can be used to keep all the remote mcc's updated.
 However there is one more aspect to consider, Domains and Map File Mngmt.
 Domain Mngmt can be resolved easily by simply using a common namespace with
 the right security applied for who can change what. The Map File Mngmt I do
 not believe is covered though (someone pls correct me if wrong). I would 
 suggest that the Central Mngr have control of the map files and DOWNLOAD 
 these files to the remotes when changes are done. Is there anything in the
 horizon for managing map files for a distributed mcc environment??? This
 would be a good time for the Vnext mgr to start looking at this.

best regards,
brad...  

4369.3DFSSTKMCC::LUNDNiklas LundMon Jan 11 1993 13:577
Hi !

We have succesfully used VAX Distributed File Service (DFS) for distribution of 
mapfiles. This can be set up to give each site r/w access to local mapfiles and
read access for remote files.

/Niklas
4369.4what about file name syncing ?HERON::PATEL_ALoLo-AQIC-I82Q-B4IP, - LMFTue Jan 12 1993 07:4912
> not believe is covered though (someone pls correct me if wrong). I would 
> suggest that the Central Mngr have control of the map files and DOWNLOAD 
> these files to the remotes when changes are done. Is there anything in the
> horizon for managing map files for a distributed mcc environment??? This
> would be a good time for the Vnext mgr to start looking at this.
         
    not too "ohfay" with this, but how would each mcc system synchronize on
    the file id's - ie when you store the map the first time it's given
    that wonderful name, right ? So how would another mcc system recognize
    it.  
    
    Amrit
4369.5re .-1ANOSWS::COMFORTCold iron shackle, ball & chainTue Jan 12 1993 11:3513
    
    I believe that the map name is contructed using the mcc_uid from the
    dns entry when the domain is created + the domain name.  As long as
    every one adheres to the same namespace and/or are not using the local
    database for entity storage, then all systems will reference the same
    map names.  We are doing this between the US and UK.  Each side is
    responsible for updateing their own maps and any updated maps are
    transferred between system every night.
    
    The DFS idea is very interesting.  Hmmm, I wonder what the performance
    would be like across the pond on a 256 k pipe.  }:^{|>
    
    Dave
4369.6hve two users had the map open simultaneously?KAJUN::NELSONThu Jan 14 1993 10:136
Hmmm...  Have you actually had two users open the same map
simultaneously? The troubles we have had in the past with DFS included
DFS opening all files for exclusive access. 


...kjn
4369.7Does mcc open files for write, or just read on startupHERON::PATEL_ALoLo-AQIC-I82Q-B4IP, - LMFThu Jan 14 1993 10:245
    Hi, we intend t otest this out... Does'nt DFS open files for exclusive
    write (ie shared read).  For MCC the files are read at map startup and
    only written if a save takes place... (or is that a bad assumption)
    
    Amrit
4369.8re .7 YupBARREL::LEMMONFri Jan 29 1993 13:074
    Map files are read in at open domain time, written out when
    the user saves the map.
    
    /Jim
4369.9NFS almost works - how about a fix?ANDRIS::putninsWed Feb 03 1993 14:2719
Since not all customers have exclusively VMS systems running DECmcc
;-), it would be nice to be able to use NFS to share map files.

Well, it almost works.  The only problem preventing this is a
dependency in Iconic Map module on the map filename's case.  The VMS
Iconic Map module doesn't care whether the filename is all upper case,
lower case, or mixed - everything is converted to upper case.  On
Ultrix, the IMPM expects a lower case file name, EXCEPT for the alpha
characters that constitute the UID portion of the map filename.  This
makes it impossible to open a map file on an ULTRIX system that is
either NFS mounted from a VMS system, or even copied with DECnet from
the VMS system (e.g. dcp -c vmsnod::mcc*.mcc_map_* . ).

It would be REALLY nice if someone were to fix this!

On the other hand, if you have only VMS systems running DECmcc, NFS
ought to work...

	- Andy