Alime.230 net.lan utzoo!decvax!harpo!floyd!vax135!lime!martin Fri Apr 23 09:23:53 1982 IBM local net From: lime!vax135!houxi!ihnss!ihuxs!steffen Reliability questions on the token-passing ring network 1) What happens when the master machine goes down? 2) What happens when two machines in the ring go down? 3) What verifies that each machine's sanity timer works? 4) How do you add a machine to the ring without breaking the ring and becoming vulnerable to other machines' failures? You can solve most of these problems with duplex, reliable machines like telephony processors; but IBM has simplex, unreliable processors. A final note: I'll trade reliability for efficiency any day. Joe Steffen Bell Labs, Indian Hill (312) 979-5381 UUCPnet: ucbvax!ihnss!ihuxs!steffen ----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen of http://communication.ucsd.edu/A-News/ This Usenet Oldnews Archive article may be copied and distributed freely, provided: 1. There is no money collected for the text(s) of the articles. 2. The following notice remains appended to each copy: The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.