Path: utzoo!attcan!uunet!husc6!bbn!mit-eddie!uw-beaver!fluke!jeff
From: jeff@tc.fluke.COM (Jeff Stearns)
Newsgroups: comp.protocols.appletalk
Subject: Do FastPaths isolate broadcasts?
Message-ID: <3868@fluke.COM>
Date: 26 May 88 00:48:37 GMT
Sender: news@tc.fluke.COM
Lines: 46



I have an existing Ethernet with about 100 hosts.   I'm considering the
addition of ten or so FastPaths to our Macs and PC's can run TOPS or
AppleShare and be served by our UNIX hosts.  It would look something like
this simplified diagram:


      UNIX     UNIX      UNIX       UNIX           ( ~~ Vitalink bridge ~~~ )
      hosts    hosts     hosts      hosts          |    to distant nets
       ||       ||        ||         ||            |
       ||       ||        ||         ||            |           [bridges to]====
    ===========================================================[  other   ]====
		  ||              ||              ||           [Ethernets ]====
	      [Fastpath]      [Fastpath]      [Fastpath]
		  |               |               |
		  |               |               |
		  |               |               |
		  +Mac            +Mac            +Mac
		  |               |               |
		  +Mac            +Mac            +Mac
		  |               |               |
		  +Mac            +Mac            +Mac
		  |               |               |
		  +Mac            +Mac            +Mac


Question 1:  AppleTalk protocols emit LOTS of broadcast packets at boot
             time.  Will those broadcasts pass through the FastPath and
	     pollute our extended Ethernet?

Question 2:  If so, can the concept of Zones be applied to control this
	     in any way? How about configuring each FastPath with a different
	     network number (or is this a foregone conclusion...)?

Question 3:  If the FastPaths were replaced by Cayman GatorBoxes, would the
             broadcast situation be changed in any way?


		Thanks for any experience and advice!
-- 
		 Jeff Stearns
	 Domain: jeff@tc.fluke.COM
	  Voice: +1 206 356 5064
    If you must: {uw-beaver,microsoft,sun}!fluke!jeff
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