Date: Fri, 26 Feb 1999 15:41:41 +0000 From: David Knapp <dknapp@luciamar.k12.ca.us> To: jvanvleet@sei-it.com, "freebsd-questions@FreeBSD.ORG" <freebsd-questions@FreeBSD.ORG> Subject: Re: FreeBSD as a serial mux? (Serial <-> FreeBSD <-> WAN <-> FreeBSD <-> Serial) Message-ID: <36D6C0B5.FA7907C8@luciamar.k12.ca.us> References: <000701be6107$c758bf20$fa105c8b@javlaptop.dms-corp.co.uk>
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We didn't use FreeBSD, although I think you could to replace a router. We replaced our 56kb lease lines with ISDN lines in order to allow tcp/ip traffic. However, we still have terminals in place at some locations. So, in order to allow both serial and tcp/ip connections over the same ISDN line, we put in Time Division Multiplexors (TDMs) on each side. So we have a 3 connector TDM with one side going to the router (Engage) one side goes to the ISDN modem (Adtran), and one side going either to the DTC (for our HP3000) or to the serial MUX at the remote site. I don't see why you couldn't replace the routers in this example with freebsd machines, but I don't know of any way to use FreeBSD as a MUX. Also, I forget which brand of TDM we use, but we had a number that were unreliable and cause me some grief in troubleshooting. hth dbk James Van Vleet wrote: > > I found this question a few times in my mailing list searches, but couldn't > find an answer. If I have the wrong mailing list, please let me know. > > Is there a way to use FreeBSD as a serial mux? What I want to do is > replace an existing leased line that is connected to serial multiplexers > with a more modern WAN (TCP/IP) connection. The downside is that I still > need to provide the serial muxing connection. So really what I need is a > way to remotely run some terminals that are proprietary enough to not have > emulation, as in serial in one server and serial out the other server. This > seems useful enough that I would be surprised is someone has not already > done it (without requiring expensive terminal servers!) Any thoughts or > suggestions are appreciated. > > -James > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- David Knapp 805 473-4353 PC Network Specialist dknapp@luciamar.k12.ca.us LMUSD "Everyone knew her as Nancy" F.T. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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