[2609] in Kerberos
Re: Kerberos 5 & login (fwd)
daemon@ATHENA.MIT.EDU (smb@research.att.com)
Fri Feb 26 17:26:06 1993
From: smb@research.att.com
To: ravi@socrates.bell-atl.com
Cc: kerberos@Athena.MIT.EDU
Date: Fri, 26 Feb 93 17:07:58 EST
Dean Anderson is probably correct in above, but I was under
the (probably mistaken) notion that 10base T, while directly
running each loop to the concenterator, still does
broadcast, (i.e. conceptually you are broadcasting over a star
as opposed to broadcasting over a bus) as the basic ETHERNET
protocol does not have any packet forwarding, and that each
Ethernet card needs to listen in to traffic and pick up up
what it sees addressed to itself, does collision detection, etc..
That depends on the hardware. There are 10BaseT hubs (natually, I'm
most familiar with AT&T's, though there are others) that know the Ethernet
address associated with each line. Non-broadcast packets are garbled
on the way out of the hubs if they're not addressed to the station on
that line. But some signal is still sent, to preserve the CSMA/CD
property of Ethernet.
