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 Being historical document, I 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
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