🚀 go-pugleaf

In article <7289@lib.tmc.edu>
drg@biomath.mda.uth.tmc.edu (David Gutierrez) writes:

> But what about the other 1000 Macs (outside of the classroom) on our Ethernet -
> won't they see the broadcast, too? And the 3000 PCs, dozens of Unix boxes and
> assorted mainframes might also notice the traffic.
> 
> David Gutierrez
> drg@biomath.mda.uth.tmc.edu

Nope.  LocalTalk broadcasts do not work like Ethernet broadcasts, and
are not propogated over the ether.  Likewise works only on LocalTalk,
as I understand it (see the appropriate MacWEEK).  When a broadcast is
sent by a Mac on LocalTalk, it specifies which physical network wire it
wishes to broadcast on, so it is more like a sub-net broadcast in
ethernet.  Normal nets have a limit of 32 nodes on a physical wire, but
you can bypass this limit by using a repeater.  Still, there is a hard
limit of 254 nodes per network, so at most 254 Macs can receive any
given broadcast.

And again, any node (Mainframe, Mac, LaserWriter, etc) that gets the
broadcast must be on LocalTalk wiring.  Likewise requires it.

Unless you have LocalTalk cards in all 3000 PCs, don't count on them
receiving broadcasts from Likewise, NBP requests, RTMP responses, etc.

> "Only fools are positive." - Moe Howard

Likewise  :-)

Mark.