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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

1351.0. "Virtual LANs, is HW V3.1 needed?" by STRWRS::KOCH_P (It never hurts to ask...) Fri Aug 26 1994 12:55

    I know I should RTM, but I'm rushed. I have a customer with a DEChub
    900 and a DECbridge 900. Does HUBwatch V2.0 for Ms-Windows (which they
    have) allow them to create virtual LANs in the DEChub or do they need
    to have HUBwatch V3.1 to do this?
T.RTitleUserPersonal
Name		DateLines
1351.1Virtual LANs - NOTNACAD2::SLAWRENCEFri Aug 26 1994 13:557
    
    You need hubwatch 3.x for the decbridge 900mx or for backplane lans.
    
    Please don't call them 'virtual lans'; to the extent that that 'term'
    means anything, it refers to something other than what we do in the 900
    backplane.   Our LANs are real.
1351.2STRWRS::KOCH_PIt never hurts to ask...Fri Aug 26 1994 21:236
    I'm sorry, obviously that term hits a sore point. I'd like to know what
    terms I should use. I realize the LANs are real, but unlike thickwire,
    thinwire & 10BaseT, you can't touch them physically since they are
    created using a GUI tool and can be created/deleted using drop/drop GUI
    technology. I'll think about a new work, but if you have a suggestion,
    I'd like to hear it...
1351.3Sore point - NOT ;-) ;-)NACAD::GALLAGHERFri Aug 26 1994 21:5715
Our literature calls them "flexible channels".  You might also hear them
referred to as "internal LANs".

The flexible channels are terminated etch within the DEChub900 backplane.

The term "virtual LAN" has become a buzzword.  As it has become a buzzword
its meaning has varied to the extent that it doesn't mean much any more.
My basis understanding of virtual LANs is that they allow users to specify 
a set of stations to be connected by a set of protocols.  The management 
application then does the necessary magic to make the connections, set the 
filters, enable the protocols, etc., in the repeaters, bridges, routers,
and hubs to create the "virtual LAN".  Several "virtual LANs" may run over
a physical LAN.  (That exhausts my knowledge of V-lans.)
    
						-Shawn