I have posted a new version of the Enterprise profile for IEEE 1588. The only changes since last time are:
Removal of the Announce TLV. There are two reasons for this removal. 1. We tested implementation by several organizations at the 2015 ISPCS Plugfest in Beijing. Interoperability results were good, but none of the implementations had the TLV. 2. A TLV to accomplish the same goals is being developed in the IEEE 1588 Working Group. It would be best to wait for this so we don't end up with two ways to do the same thing. Allowing Unicast Negotiation. This was a requirement for support by one of the organizations which actually produced an implementation. Also, I agree that some network operators will want this. I also added a note that when Delay Requests are not negotiated then the message interval will need to be set by configuration. This was a comment made by reviewers. I restricted the discussion of interoperability with other profiles to the IEEE 1588 Default profile. There are many profiles now, and I don't want to get into the business of cataloging them all. Thank you to John Fletcher and Wojciech Owczarek for reviewing and commenting on the last version. -- Doug Arnold Principal Technologist *JTime!* Meinberg USA +1-508-309-6268
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