Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!nrl-cmf!cmcl2!phri!roy From: roy@phri.UUCP (Roy Smith) Newsgroups: comp.dcom.lans Subject: ACC ethernet bridge Message-ID: <3380@phri.UUCP> Date: 13 Jul 88 00:44:41 GMT Organization: Public Health Research Institute, NYC, NY Lines: 23 After deciding that Ungermann-Bass's prices are out of sight, I've been looking at an ACC model 4030 ethernet bridge. It's got some amount of packet filtering and can run at 56/64kbps (or 112/128kbps with twin serial lines). Does anybody have any experience with these? From the literature they look to be a nice product and at just under $5k, they're about half the price of the U/B gear. Granted, the U/B datalink bridges can run at much higher speeds (up to T1), but we probably won't have a need for more than 56kbps. If I understand things right, the bridge listens on both ethernets and by looking at the source addresses learns which ethernet addresses are on which side of the bridge. If a packet on one net has a destination address of X and the bridge has already seen a packet on that net with X as the source address, it doesn't forward the packet to the other net. You can also program in some number (60?) of specific addresses to filter out. I've heard the term "brouter" refering to a hybrid bridge-router. Is this kind of filtering bridge what people mean when they say brouter, or is there yet another kind of beast which gets that name? -- Roy Smith, System Administrator Public Health Research Institute {allegra,philabs,cmcl2,rutgers}!phri!roy -or- phri!roy@uunet.uu.net "The connector is the network"