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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

2587.0. "SMF to the hub with 900EF, how does the ring look?" by STRWRS::KOCH_P (It never hurts to ask...) Fri Jul 28 1995 12:27

    I have a customer which needs to connect 2 sites via single mode fiber.
    I am recommending a DH900, a DECconcentrator 900MX configured with 2
    SMF PMDs, 4 MMF PMDs and a DECswitch 900EF. 
    
    I need to check my logic. Since my SMF connections will be on the front
    panel acting as the A-B ring connections, do I need to hook up my
    DECswitch 900EF from its front panel using the B-port to the
    DECconcentrator 900MX M-port (don't see a need to dual home). 
    
    In order for me to make the 900EF participate in the ring in the
    backplane, I would need TWO DECconcentrator 900MX each with a SMF
    connection (A on first, B on second) to get the 900EF into the ring? Or
    does the new firmware give me a capability I don't understand or know
    about?
T.RTitleUserPersonal
Name		DateLines
2587.1NETCAD::DOODYMichael DoodyFri Jul 28 1995 13:549
    Take a look at the FDDI configuration guide, in note #2340.
    Specifically diagram #15. 
    
    With the new firmware you can configure the concentrator as AB out the
    front and M out the back, then configure the switch as MS out the back.
    Your concentrator will act as a root and the switch is treed off the
    ring.
    
    -Mike