Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!bnrgate!kratz From: kratz@bnrgate.UUCP (Geoff Kratz) Newsgroups: comp.dcom.lans Subject: Re: Ethernet over twisted pair - what are your expieriences? Keywords: utp, ethernet Message-ID: <283@bnrgate.UUCP> Date: 10 Dec 89 14:17:53 GMT References: <338@fuhainf2.fuhainf.UUCP> Reply-To: kratz@bnrgate.UUCP (Geoff Kratz) Organization: Bell-Northern Research, Ltd. Ottawa Ontario CANADA Lines: 35 In article <338@fuhainf2.fuhainf.UUCP> rosenb@fuhainf.UUCP (Rosenberger) writes: >1) does this work on really unshielded wires? Yes. (Why are people so suprised to hear this? :-) >2) is a pair ( 2 ) of wires really sufficient? Actually, to get 10 Mbps, you need to use 2-pair UTP (standard stuff). The 2-wire systems I heard of only run about 3 Mbps. >3) do you have to stick to one single companie's type of utp equipment or > is there some standart, so you could mix different hardware? The answer is (I believe) "that depends". Since the 10BASET standard still isn't finalized, some vendors have gone off on their own somewhat. Full interoperability isn't guaranteed on all equipment. >4) what are the limitations of this approach: > -minimum/maximum distance between two stations, > -sensivity of surrounding environment, etc UTP doesn't go nearly as far as either of the coax solutions, so if distance is a problem UTP isn't the answer. The distance is something like 100-200 meters (as opposed to the 500m length of thick). >5) what are your expierences and what hardware can you recommend, I only > know about STARLAN (I think from AT&T), what other companies offer this? The STARLAN-10 product is from Hewlett-Packard and is the hub. We are also using HP Bridges. So far, no complaints. -- Geoff Kratz Bell-Northern Research, Ltd. Ph: (613) 763-5784 Internet Systems P.O. Box 3511, Station C FAX:(613) 763-3283 Ottawa Ontario Canada K1Y 4H7 kratz@bnr.ca ...!uunet!bnrgate!kratz #include