brad@cayman.COM (Brad Parker) (08/22/88)
From article <612@kinetics.UUCP>, by minshall@kinetics.UUCP (Greg Minshall): > From article <63660@sun.uucp>, by pugs%whitsun@Sun.COM (Tom Lyon): > There are a few points here. First off, there is no relation between > AppleTalk zones and IP subnetworks specified "anywhere". The fact is > that quite often there is such a relation, but no one can count on it. I disagree. The MacIP implementations I know of do a lookup for the gateway with the zone name "*". This implies that the "domain" (if you will) for the MacIP forwarding is the current zone. The MacIP forwarding is generally specified as an IP subnet or a subrange thereof. So, a relationship excists between AppleTalk zones and IP subnet forwarding by the gateway. I've taken this to further imply that an IP broadcast should be sent by a gateway to all nets in the current zone, just and an NBP Bridge request would be. Certainly I haven't seen any of this on paper. One could argue that it's not part of any formal spec, but that the implementations seem to enforce the relationship described above. ps: I have a terrible cold and all of this might be jibberish; but at least it's an interesting thought ;-) -brad -- "What will you do when you wake up one morning to find that God's made you blind in a beautiful person's world and all those great recepies have let you down, and you're twenty and a half and you're not getting age where you go look for the boys 'says I love you lets get married and have kids." -Billy Bragg.