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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

2936.0. "DECswitch900EF/RTR FDDI connection" by CLPR01::PEYRACHE (Jean-Yves Peyrache Country Support Group France) Tue Oct 31 1995 13:34

  Hello

  HUBwatch V4.1.1 for windows DECswitch900EF/RTR V1.0.2

  Using LAN interconnect window i can connect my DECswitch900EF/RTR
  on a dual ring in a DEChub900MS backplane where 2 DECconcentrator900MX
  are already connected on this ring EVEN if in the network building block
  for  FDDI i havn't the right connection (aka port A in front panel
  and port B in the backplane for my DECswitch900EF/RTR).

  know bugs ?

  thanks for any comments         

  jean-yves

 Cross-posted in Common_brouters notefile
T.RTitleUserPersonal
Name		DateLines
2936.1NETCAD::DOODYMichael DoodyTue Oct 31 1995 14:5545
    Jean-Yves,  I don't understand what the problem is. Could you elaborate
    please.
    
    Let me guess  - You start with a ring that looks like this:
    
			      Front Panel Ports
    
    	+-+-+-+-+-+-+-+		+-------------+
    	|DECcon 900   |		|DECcon 900   |	
    	+-+---------+-+		+-+---------+-+	
    	  |	    |		  |	    |
	  |	    +-------------+         |
	  |         B             A         |
          +---------------------------------+
	  A			            B
    
    			      Backplane Ports
    
    
    	Then you insert a 900EF/MP (or /IP) into the ring having configured
    it A out the front B out the back. This is a valid configuration and 
    this is how the hub will be connected:
    
    
			      Front Panel Ports           A
							  |    
    	+-+-+-+-+-+-+-+		+-------------+		+-+-------+-+-+	
	|DECcon 900 1 |		|DECcon 900 2 |		|DECsw 900 EF/|
	+-+---------+-+		+-+---------+-+		+-+---------+-+
	  |	    |		  |	    |		   	    |
	  |	    +-------------+       (n/c)                     |
	  |	    B		  A	    B		  	    |
	  |							    |
    	  +---------------------------------------------------------+
          A                                                         B
				Backplane Ports
    
    
    This is what we loosely call a "ring segment on the backplane". It is
    really a wrapped ring; the ring wraps at the A port of concentrator
    #2. This is not specific to the 900EF rtr, you can do this with any of
    the 900 FDDI gear.
    
    
    -Mike
2936.2bad interpretation..PRSSOS::PEYRACHEJean-Yves Peyrache Country Support Group FranceFri Nov 03 1995 13:117

 thank Mike,

 i have missed something,

 jean-yves