Brian, Thank you very much for the explanation. It would be great if you can add this explanation to the draft to make the "Historic" draft more self-explanatory. Linda Dunbar -----Original Message----- From: Brian Haberman <brian@xxxxxxxxxxxxxxxxxx> Sent: Friday, June 12, 2020 12:11 PM To: Linda Dunbar <linda.dunbar@xxxxxxxxxxxxx>; ops-dir@xxxxxxxx Cc: draft-ietf-ntp-mode-6-cmds.all@xxxxxxxx; ntp@xxxxxxxx; last-call@xxxxxxxx Subject: Re: Opsdir last call review of draft-ietf-ntp-mode-6-cmds-08 Hi Linda, On 6/8/20 6:52 PM, Linda Dunbar via Datatracker wrote: > Reviewer: Linda Dunbar > Review result: Has Nits > > I have reviewed this document as part of the Ops area directorate's > ongoing effort to review all IETF documents being processed by the > IESG. These comments were written primarily for the benefit of the Ops area directors. > Document editors and WG chairs should treat these comments just like > any other last call comments. > > This document describes the structure of the control messages that > were historically used with the Network Time Protocol. Being > historical document, I would expect the document to give a description > on what the Control Message are for, who is the sender, and who is the > receiver, is the Control Message broadcast to every node in the > network? or only between some nodes? The document describes the bits > in detail for Mode =6 and Mode =7. The RFC1305 has a lot of > information, but can't pinpoint the Control message's purpose. Are the > control messages for distributing time from Stratum 0 to Stratum 1? or between network nodes? As Ulrich pointed out, these messages are for controlling/monitoring an running NTP server. These messages are not meant for server-to-server exchanges, rather for "management station" to server exchanges. As for the "who uses it" question, I thought section 1.2 captured a good representation of that (e.g., ntpdc) for mode 7. Section 1.1 describes the basic framework for the use of mode 6, but doesn't provide a concrete example. I can craft some text for section 1.1 that explicitly talks about managing NTP servers. Regards, Brian -- last-call mailing list last-call@xxxxxxxx https://www.ietf.org/mailman/listinfo/last-call