Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!think!harvard!caip!seismo!umcp-cs!cvl!umd5!louie From: louie@umd5.UUCP (Louis Mamakos) Newsgroups: net.lan Subject: Re: Ethernet connections for mainframes Message-ID: <926@umd5.UUCP> Date: Tue, 22-Apr-86 23:01:09 EST Article-I.D.: umd5.926 Posted: Tue Apr 22 23:01:09 1986 Date-Received: Sat, 26-Apr-86 06:29:38 EST References: <1104@uwmcsd1.UUCP> <169@brl-sem.ARPA> Reply-To: louie@umd5.UUCP (Louis Mamakos) Distribution: net Organization: U of Md, CSC, College Park, Md Lines: 33 In article <169@brl-sem.ARPA> ron@brl-sem.ARPA (Ron Natalie ) writes: >> We would like to hear from other sites that have such a configuration [mainframe >> (of any sort) to Ethernet], preferable by means of an IO channel connection, >> since our application requires the bandwidth of an IO channel. > >The guys down at the University of Maryland who I believe were the first >one to do TCP/IP for the UNIVAC were recently talking about using the IBM >DACU to connect the Sperry channel to a UNIBUS Ethernet board (Sperry >channels are pretty much interchangable with IBM channels). These guys >arealso did the software at NOSC.The FUZZBALL plays internet gateway to >a serial line to the UNIVAC. Frankly, I believe this is much preferable >than kludging a ethernet to the Sperry in any of the methods I've seen >so far (DACU's are kind of silly devices). > >> one commercial solution that we know of; INTERnet Systems Corporation uses a >> micro-VAX II to drive an IO channel interface. (These channels, by the way, >> are "IBM"-type byte channels.) > >We are in the middle of having INTERNET systems hook up our Sperry, I'll >let you know how it turns out. Yes, as far as I know, we were the first with TCP/IP on the Sperry. We're currently running a 40KB sync line to a fuzzball which has an ethernet on it. It seem that we've got some users, and they have all this data you see.. and they want to move it REAL fast. So. We are in the process of evaluating the Sparticus (now Fibronics) and Auscom IBM-type-byte-channel ethernet boards, and hope to have one here soon. Well see how fast our purchasing people can deal with this one. -- Louis A. Mamakos WA3YMH University of Maryland, Computer Science Center Internet: louie@trantor.arpa UUCP: {seismo!umcp-cs, ihnp4!rlgvax}!cvl!umd5!louie