On Mon, Nov 15, 2010 at 21:55, James "Murphy" McCauley <jam...@nau.edu>wrote:
> I notice that the chassis ID TLV also has a "local" subtype. According > to 802.1AB-2005 (which isn't the current version), this is "an > alpha-numeric string and is locally assigned". Can we just stuff the > DPID in there as a string? Maybe prepend "dpid:" to weed out anything > else that may use it and to look nice for other tools? > There's no real reason to overload the chassis ID TLV like this since we really do still need the MAC subtype (if we're going to do things that other devices understand anyhow), we might as well construct a real LLDP packet (like FlowVisor does, which Rob S. already covered) - you need to add other TLVs anyhow to make it conform to the spec (Chassis ID, Port ID, and TTL are required). I believe in FV we use a System Description TLV (type 6) and drop the DPID in as the payload. -- Nick
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