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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

405.0. "When do I use STATION and when do I use NODE4?" by OSLACT::BJORN (Once again) Fri Oct 12 1990 13:39

T.RTitleUserPersonal
Name
DateLines
405.1Global entities = software, not hardwareALLZS::MORRISONThe Network IS the SystemMon Oct 15 1990 13:0936
> My problem now is that many of the NODE4 entities where also showing
> up as STATIONS.

Almost, but not quite accurate.  In the DECmcc view of the world, a piece
of hardware which runs DECnet (your NODE4 entity) also has a separately
addressable global entity called a Station (the Ethernet adapter).  These
are indeed two global entities to DECmcc, although they happen to reside in
a single cabinet.

> My question is how do I use DECmcc the right way to get a true map of
> our local network topologi?

When we figure it out, we'll let you know.  :-)

When should I use STATION and when should I use NODE4.

Use STATION when you want to test the data link layer, or get information
about the Ethernet adapter (SYSID info, XID, etc.).  Use NODE4 when you
want DECnet information.

> Do I have to put them in two different DOMAINs to be able to
> have both Ethernet loopback test possibilities and DECnet loopback
> possibilities?

I don't see any reason why that would be necessary.  You might want to do
that for other reasons (e.g. - separation of levels of control), but I know
of no reason to require it.

> My MAP is becoming more and more messy, if I have to put up a node as
> two different entities.

It gets even worse than that if you add in SNMP, and some other global
entities that may coexist on the same piece of hardware.  This is an issue
that we need to take a harder look at in future versions of the software.

						Wayne
405.2another view of Wayne's replyTOOK::STRUTTColin StruttWed Oct 17 1990 02:0131
    Just to summarize Wayne's reply in .1
    
    We agree it's not perfect yet.
    
    The different "views" of entities represent the different means of
    accessing different components of the entity - ie. different management
    protocols.  This, of course, is techno-babble, and you should not have
    to put up with it.  Unfortunately, it's not perfect yet...
    
    We would like, over time, to integrate these "multiple views", so that
    the (poor) user need not be aware of the implementation details. (After
    all, who cares what management protocol is needed - I just want to 
    manage the d.mn thing.)  There are a number of different ways we may
    attempt this, including integration at the u/i (ie. at the PM level),
    integration via an application (ie. at the FM level) and/or integration
    at the entity level (and hence at the AM level).  It's just not
    perfect, yet...
    
    Finally, I think there is a place for both "views", and you probably
    want to choose one (or both) depending on your needs. If you are
    primarily managing DECnet, you probably only need the NODE4 view; if you
    are primarily managing an Ethernet, you probably only need the STATION
    view; of course, those people who have both the DECnet software and the
    Ethernet cable plant will probably need to worry about both. Note that
    in the latter case you might accomplish this with different domains,
    where one contains the DECnet nodes, and another the Stations, and use
    a name philosophy to "tie" the station names to the corresponding
    DECnet (ie. DECdns) names.
    
    Hope this helps
    Colin