Date: Wed, 8 May 2002 15:10:15 +0200 From: Christophe Prevotaux <c.prevotaux@hexanet.fr> To: freebsd-net@freebsd.org Cc: freebsd-hardware@freebsd.org Subject: UDLR Message-ID: <20020508151015.1a1c392f.c.prevotaux@hexanet.fr>
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Hi, I have once asked if someone would be interested in implementing UDLR and DVMRP and include it in FreeBSD ? Julian Elischer mentioned it would be fairly trivial to implement as a node in Netgraph. However I am no programmer. I was wondering if no one had interest in UDLR ? I understand that today's broadband access do not require these unidirectional links, but I can't believe no one needs this, since they are also plenty of other use for it apart from the fact it can be used for unidirectional link (one way internet access (uplink is done thru a modem or a different kind of internet access link)) If someone is interested in develloping this, there is some code source available (it is FreeBSD Release 2.2.x. based and has not been maintained for a long time). Receivers boards ================ DVB-S PCI adapter drivers are also needed for devices from any of these manufacturers http://www.coship.com/English/products/cdvbany2010s.htm http://www.broadlogic.com http://www.pentamedia.com http://www.twinhan.com.tw who might be ready to lend or give out hardware in order to help devellopement of these drivers. Uplink boards ============= These boards must be able to: - Transmit IP packet over DVB/MPEG 2 transport stream - Variable maximum data rate determined by external clock generator, transparent for reception cards - ISA Bus As of today I have not found (yet) transmit (uplink) boards manufacturer As for uplink boards the devellopement of such drivers are to be a problem since it is very unlikely that anyone as a personal space segment on a DVB capable satellite and the necessary hardware However if anyone has ideas on how to build a test cheap unit for uplink and downlink testing locally , please let me know. Also since Bill Fenner is both part of the UDLR IETF BOARD and member of the Mbone FreeBSD Team, we have a great source of internal knowledge in this protocol etc...(In the event that Bill agrees to help (of course)) http://people.freebsd.org/~fenner/ I have contacted the author of the RFC for UDLR Emmanuel Duros but as of now it is to no avail since he has not answered my email (it has been several months) Here are some pointers to some available literature and source code: What is UDLR (Short introduction) ================================= http://www.actconferences.com/sif2002/abstract/udlr.htm RFCs , Drafts and Charter ========================= http://www.ietf.org/html.charters/udlr-charter.html http://www.ietf.org/internet-drafts/draft-ietf-udlr-pppoe-00.txt http://www.ietf.org/internet-drafts/draft-ietf-udlr-multicast-issues-00.txt http://www.ietf.org/internet-drafts/draft-ietf-udlr-security-00.txt http://www.ietf.org/internet-drafts/draft-ietf-udlr-dvmrp-conf-02.txt http://www.ietf.org/rfc/rfc3077.txt http://www.ietf.org/rfc/rfc1075.txt Source code =========== http://www-sop.inria.fr/rodeo/personnel/eduros/manu.html -- -- =============================================================== Christophe Prevotaux Email: c.prevotaux@hexanet.fr HEXANET SARL URL: http://www.hexanet.fr/ Z.A.C Les Charmilles Tel: +33 (0)3 26 79 30 05 3 Allée Thierry Sabine Direct: +33 (0)3 26 79 08 02 BP202 Fax: +33 (0)3 26 79 30 06 51686 Reims Cedex 2 FRANCE HEXANET Network Operation Center =============================================================== To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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