[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

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

786.0. "fddi 900MX to 900MX" by WOTVAX::CLOWESC (Colin Clowes) Thu Mar 03 1994 11:26

Hi,

Can I do this:


<-DEChub900-->	      <-------------DEChub900------------->	 <-DEChub900-->

DECbridge900mx<------>DECbridge900mx<------>DECbridge900mx<------>DECbridge900mx
		  ^			^		      ^
	FDDI link |	 backplane FDDI |	    FDDI link | 

I have attempted to draw: 2 DECbridge 900mx's with a FDDI backplane connection 
in a central hub, each 900MX has a external FDDI connection to another 
DECbridge900 mx in a hub.

Can I connect the ())MX bridges to each other, or do I need a concentrator ?

I have looked at various config questions and guides but non seem to answer this 
specific configuration.

Thanks

Colin
T.RTitleUserPersonal
Name		DateLines
786.1yes, butQUIVER::SLAWRENCEThu Mar 03 1994 13:557
    You will be able to do this when support for FDDI Lan Hopping is
    released (note that early ship bridges and concentrators will require a
    firmware upgrade).
    
    In fact, we are in the process of rewiring our own network here in
    DEChub Engineering doing exactly that (if it doesn't work - we'll be
    the first to know).
786.2LEVERS::ANILThu Mar 03 1994 21:3914
    A small correction to Scott's answer: "early ship" bridges already have
    the feature.  You do need to wait for released HUBwatch support.
    
    If you ever hear people talk about "A/B path split" then this is
    what they are referring to.  That is, for example, port A could be on
    the front panel while port B is on the backplane.  The FDDI wiring for
    the config comes in to one module, and leaves via another!
    
    In your config with the 3 bridges on one DEChub, A of the one on the
    left could get the incoming FDDI connection and B on the B/P, middle
    one with both on the B/P, right one with A on B/P and B supplying the
    outgoing FDDI.  Part ofthe dual ring is now inside the DH900.
    
    Anil
786.3Thanks... I'll sell it now !WOTVAX::CLOWESCColin ClowesMon Mar 07 1994 08:451