tcpdump mailing list archives
Re: Linktype needed
From: "Martin Angler" <martin.angler () email it>
Date: Mon, 7 Jun 2004 12:28:46 +0200
Hello, Yes, our driver will supply "raw" packets with the header specified by the BACnet specification. Therefore we would appreciate your first suggestion, which would be naming the linktype DLT_BACNET_MS_TP. Thanks in advance, Martin Angler -----Ursprüngliche Nachricht----- Von: tcpdump-workers-owner () lists tcpdump org [ <mailto:tcpdump-workers-owner () lists tcpdump org> mailto:tcpdump-workers-owner () lists tcpdump org] Im Auftrag von Guy Harris Gesendet: Samstag, 5. Juni 2004 20:56 An: tcpdump-workers () lists tcpdump org Betreff: Re: [tcpdump-workers] Linktype needed Martin Angler said:
my name is Martin Angler and I am developing a BACnet MS/TP - enabled
netdevice-driver
under GNU/Debian Linux. Now I've seen, that there is no linktype that
specifies BACnet
MS/TP. So I wanted to ask whether you could define/implement a
corresponding linktype. I infer from some stuff I've seen that BACnet MS/TP is a link-layer protocol atop which the higher-level BACnet protocols can run (just as they can run atop UDP and 802.2). Will your driver supply "raw" packets with a header specified by the BACnet specification (the ISO standard appears to cost over 350 CHF, so I haven't bought it), or will it supply some form of "cooked" software that might not be what other BACnet MS/TP capture mechanisms might supply? If the former, the linktype should probably be called DLT_BACNET_MS_TP or something such as that; if the latter, the name should probably have something in it to indicate what type of header it is (see, for example, DLT_ARCNET, which should perhaps have been DLT_ARCNET_BSD, and DLT_ARCNET_LINUX, or DLT_APPLE_IP_OVER_IEEE1394, which is not raw Firewire but has a synthetic header).
Other people that worked on an MS/TP dissector (www.abmlinux.de)
already
tried to
contact you, but without success.
I don't think I've seen that on tcpdump-workers. Do they have their own driver and, if so, does it supply the same link-layer header (if not, it'd need a separate DLT_ value)? - This is the tcpdump-workers list. Visit https://lists.sandelman.ca/ to unsubscribe. -- Email.it, the professional e-mail, gratis per te: http://www.email.it/f Sponsor: ...Occhiali da sole? Da vista? Lenti a contatto? * Vieni a provare la convenienza su Occhialeria.it! Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid1&d=7-6lick.cgi?mid$10&d=7-6=7-6
Current thread:
- Linktype needed Martin Angler (Jun 05)
- <Possible follow-ups>
- Re: Linktype needed Guy Harris (Jun 05)
- Re: Linktype needed Martin Angler (Jun 07)
- Re: Linktype needed Guy Harris (Jun 07)