mpd@anomaly.sbs.com (Michael P. Deignan) (11/04/90)
We're in the process of getting an Alternet connection. We would like to network multiple Xenix boxes off the main system which is tied in via a 56kbps TCP/IP line. These connections will be SLIP connections. However, I've heard that you can't run more than 1 SLIP connection at a time. What I want to do is as follows: box 1 <--- SLIP ---\ box 2 <--- SLIP ---|----> main system <--- TCP/IP ---> ALTERNET box 3 <--- SLIP ---/ SLIP connections would be 9600baud, with the TCP/IP connection a 56kbps connection. Eventually, as well, I'd like to be able to run SLIP connections off one of the "leaf sites" (ie: box3). Can this be done with the SCO TCP/IP system for XENIX? What other limitations are there? MD -- -- Michael P. Deignan / Introducing... -- Domain: mpd@anomaly.sbs.com / MommyCalc: A Spreadsheet so -- UUCP: ...!uunet!rayssd!anomaly!mpd / simple, even a woman can learn -- Telebit: +1 401 455 0347 / how to use it....
moore@betelgeuse.cs.utk.edu (Keith Moore) (11/05/90)
In article <9011031505.AA06211@anomaly.sbs.com> mpd@anomaly.sbs.com (Michael P. Deignan) writes: >We're in the process of getting an Alternet connection. We would like to >network multiple Xenix boxes off the main system which is tied in via a >56kbps TCP/IP line. These connections will be SLIP connections. However, >I've heard that you can't run more than 1 SLIP connection at a time. What >I want to do is as follows: > > > box 1 <--- SLIP ---\ > box 2 <--- SLIP ---|----> main system <--- TCP/IP ---> ALTERNET > box 3 <--- SLIP ---/ > >SLIP connections would be 9600baud, with the TCP/IP connection a 56kbps >connection. > >Eventually, as well, I'd like to be able to run SLIP connections off one >of the "leaf sites" (ie: box3). > >Can this be done with the SCO TCP/IP system for XENIX? What other limitations >are there? > >MD >-- >-- Michael P. Deignan / Introducing... >-- Domain: mpd@anomaly.sbs.com / MommyCalc: A Spreadsheet so >-- UUCP: ...!uunet!rayssd!anomaly!mpd / simple, even a woman can learn >-- Telebit: +1 401 455 0347 / how to use it.... You don't want to do this if you want to use your "main system" for anything else. The reason is, SLIP connections *eat* interrupts like mad. Unless you have some really smart serial interface that knows about SLIP framing and only interrupts when a frame is complete, you don't want to have three SLIP connections hanging off a poor Xenix box. If the cost of Ethernet is prohibitive, consider getting a cheap AT clone and running pcroute on it (which is free). You don't even need a monitor! Use the pcroute box as your gateway system between alternet and your local network. A reasonably fast AT running pcroute should be able to keep up with three or four SLIP links without dropping too many packets. Keith Moore / U.Tenn CS Dept / 107 Ayres Hall / Knoxville TN 37996-1301 Internet: moore@cs.utk.edu BITNET: moore@utkvx ``Paranoia is a drug which is more dangerous than any controlled substance.''