Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pasteur!agate!ig!uwmcsd1!bbn!rochester!PT.CS.CMU.EDU!andrew.cmu.edu!mw3s+ From: mw3s+@andrew.cmu.edu (Martin Weiss) Newsgroups: comp.dcom.lans Subject: Re: QPSX - 802.6 - Metropolitan LAN ?s Message-ID: Date: 25 Feb 88 16:36:55 GMT Organization: Carnegie Mellon University Lines: 26 In-Reply-To: <36@dogie.edu> I am no expert in this area, but my understanding is as follows: >So how does a node know which bus it should write data to send to a given station? My understanding (based on second hand information) is that this is still being discussed in the committee. There are several possible ways of doing this, including having a node "learn" the relative locations of other nodes dynamically, and developing a numbering scheme such that the address of the node would indicate the direction. Each method clearly has benefits and problems. There may also be other techniques. >The article talks about 'active' and 'passive' failure of a node? What do these mean? How will >these be detected and bypassed? I don't recall exactly what the article said, but I believe that this issue was addressed in the MAN article or its companion article on QPSX in the same issue. I suggest you re-read both again (I will as well for my own information). >Who would be possible clients for such a net? The article makes the point that local telephone operating companies as well as corporations would be potential users of this MAN. I hope this helps.