If I am writing a controller application, how do I create the controller GUID that goes into the controller entity ID field of, for example a CONNECT_RX AVDECC command? Thanks for any help with this!
IEEE Std 1722.1-2013 just says it should be unique. It makes sense to use a host interface MAC-48 and append a random number to make up 64 bits.
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Hi Andre, Thanks for the post and apologies for the slow reply. I had previously received an answer from Jeff Koftinoff, which confirmed what you indicated. I think it would be helpful to quote Jeff, and I don't think he would mind: "The controller is an entity. The same rules apply for the entity as others; specifically, it needs to be unique on the network, it needs to be prefixed by a IEEE assigned OUI MA-L MA-M or MA-S Typically, people find the “Primary MAC address” of the computer that the controller is running on. This is a six byte value: UU:VV:WW:XX:YY:ZZ. You then convert this to an EUI-64 in the way IEEE specifies: UU:VV:WW:FF:FE:XX:YY:ZZ And this would then be the controller’s Entity ID (GUID is an old term which has different definitions) If you need more than one controller per computer, then you would replace the middle FF:FE with two byte values so that each controller running on the computer would get a unique ID." My AVDECC messages are working fine with this approach. Regards, Richard.