Date: Mon, 29 Jul 2002 08:52:49 -0700 (PDT) From: Tom Samplonius <tom@sdf.com> To: Craig Rodrigues <crodrigu@bbn.com> Cc: freebsd-net@FreeBSD.ORG, freebsd-isp@FreeBSD.ORG Subject: Re: SONET over PPP/IP for FreeBSD? Message-ID: <Pine.BSF.4.05.10207290846010.656-100000@misery.sdf.com> In-Reply-To: <20020729115623.A8688@bbn.com>
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On Mon, 29 Jul 2002, Craig Rodrigues wrote: > On Sat, Jul 27, 2002 at 11:32:48AM -0700, Tom Samplonius wrote: > > > > On Sat, 27 Jul 2002, Craig Rodrigues wrote: > > > > > Hi, > > > > > > Has anyone done any work or experiments to implement > > > PPP/IP over SONET ( http://www.ietf.org/rfc/rfc2615.txt )? > > > > I don't know if there are any SONET interfaces available for use. > > > > > I am interested in doing some experiments with SONET over > > > regular Ethernet equipment instead of ATM. > > > > That seems strange. Can you really encapsulate SONET in ethernet > > frames? Or, do you somehow want to utilize an specially programmed > > ethernet NIC to generate SONET framing? > > > > I know the 10GbE standard as an option supports ethernet encapsulated > > inside a simplified SONET transport. > > > Hi, > > I think I did not understand all the acronyms I was looking at when > I wrote my e-mail. :) > > My basic goal is that I would like to experiment with SONET on a PC computer > (on a small scale, for learning purposes only) without having to use ATM equipment > (if I can avoid it). SONET is layer 1, and ATM layer 2, so they are not really comparable. ATM rides inside SONET. Since ATM adds a fair amount of overhead that is unnecessary for many applications, PPP over SONET is now very common. > I am interested in whatever existing SONET software simulators > for FreeBSD or FreeBSD device drivers are out there which could help me > do this. > > I suggested PPP/IP over SONET, but based on some further reading, it looks > like I would need special hardware to do this. For example, > PMC-Sierra has a special chipset which does packet over SONET (POS): > > http://www.pmc-sierra.com/pressRoom/pr/1998092100.html > http://www.pmc-sierra.com/products/details/pm5351/index.html > > This chipset is implemented in equipment from various router vendors, > such as Cisco: > > http://www.cisco.com/warp/public/cc/pd/rt/12000/prodlit/gspos_an.htm > > I couldn't find any information about NIC cards with POS capabilities > which could plug directly into a PC. I don't think there are any. The best you can do, is an ATM card. But you will not have any direct access to the SONET layer. > As you mentioned, there is some interest in encapsulating Ethernet > inside a SONET transport. There is a tutorial of Ethernet over SONET here: > > http://www.commsdesign.com/design_corner/OEG20020418S0005 (Part 1) > http://www.commsdesign.com/design_corner/OEG20020425S0003 (Part 2) > > > So there is a lot of stuff going on, but is any work going on in > this area which would work under FreeBSD? ;) > I just want to use a FreeBSD PC to learn about SONET, without getting > lots of expensive equipment. If there is a software simulator of SONET > that works on FreeBSD, I would be interested in that. Software simulator? SONET is used for so many different things, I don't know how you would do this. If you really want to learn about SONET, you will need expensive equipment, because learning about that expensive equipment is an important part of SONET. Otherwise you can read and book and learn all the theory, and be done with it. > Thanks. > -- > Craig Rodrigues Distributed Systems and Logistics, Office 6/304 > crodrigu@bbn.com BBN Technologies, a Verizon company > (617) 873-4725 Cambridge, MA > > Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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