Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!lll-crg!styx!ames!ucbcad!ucbvax!YALE.ARPA!LEICHTER-JERRY From: LEICHTER-JERRY@YALE.ARPA Newsgroups: mod.computers.vax Subject: Re: Ethernet promiscuious mode (VAX/VMS) Message-ID: <8611261312.AA21371@ucbvax.Berkeley.EDU> Date: Wed, 26-Nov-86 08:12:18 EST Article-I.D.: ucbvax.8611261312.AA21371 Posted: Wed Nov 26 08:12:18 1986 Date-Received: Wed, 26-Nov-86 19:56:20 EST Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Organization: The ARPA Internet Lines: 19 Approved: info-vax@sri-kl.arpa Thanks to Rick Watson and Gerard K. Newman for pointing out the error in my warning about not being able to enable promiscuous mode when there were any other users on a DExNA. Since Mr. Newman has a running program that does this, it's kind of hard to argue that it's impossible! Take this as another warning that the DExNA documentation is tough going. The actual text reads: "Only one unit on a DEUNA may be active with promiscuous mode enabled". This can be parsed in two ways.... One thing remains unclear to me, and was the reason I made the interpretation I did: I don't believe that the driver will duplicate a received packet, so anything that comes in will be delivered to at most one receiving process. (It may get dropped on the floor if there are NO eligible receivers.) So, what does a promiscuous receiver on a shared DExNA receive: Just those packets no one else is interested in, or does the driver in fact duplicate packets? -- Jerry -------