Path: utzoo!mnetor!uunet!mcvax!cernvax!jmg From: jmg@cernvax.UUCP (jmg) Newsgroups: comp.dcom.lans Subject: Re: Ethernet broadcast Message-ID: <664@cernvax.UUCP> Date: 6 May 88 06:29:55 GMT References: <2520@ihwpt.ATT.COM> Reply-To: jmg@cernvax.UUCP () Organization: CERN European Laboratory for Particle Physics, CH-1211 Geneva, Switzerland Lines: 18 Keywords: application/protocol failure In article <2520@ihwpt.ATT.COM> dsb@ihwpt.ATT.COM (debbie butler) writes: > >Are there any applications or protocols that *require* the use >of Ethernet's broadcast mechanism? Do they fail without it? Try putting Macs on Ethernet, either by direct Ethertalk connection or a Kinetics FastPath. You will then see lots (too many) broadcasts. They use their own version of arp (AARP), plus also bursts of (identical) broadcasts when trying to establish and defend a unique node number. Then there are the routing (RTMP) packets every 10 seconds. I think that someone in Apple thought that they could treat an Ethernet just like their own LocalTalk, rather than a multi-host multi-protocol medium with hundreds (thousands) of connections. -- _ _ o | __ | jmg@cernvax.uucp | | | | _ / \ _ __ _ __ _| jmg@cernvax.bitnet | | | | |_) /_) | __/_) | (___\ | (_/ | J. M. Gerard, Div. DD, CERN, | | |_|_| \_/\___ \__/ \___| (_|_| \_|_ 1211 Geneva 23, Switzerland