Re: [Ntp] Symmetric mode

Hal Murray <halmurray@sonic.net> Sat, 01 October 2022 06:28 UTC

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To: Harlan Stenn <stenn@nwtime.org>
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From: Hal Murray <halmurray@sonic.net>
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Subject: Re: [Ntp] Symmetric mode
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> Peer modes (1/active and 2/passive) are for exchanging time between peers.

I can get the same results with a pair of client/server connections.  Right?


> Local policy choices include "do we want to use peer mode on any machines?"

Why would anybody choose peer mode over a pair of back-to-back client/server 
connections?


Is there any good reason that we should:
  include symmetric modes in NTPv5
  work on NTS for symmetric modes

The main reason not to is that it adds unnecessary complexity.

Symmetric mode uses half the bandwidth.  That doesn't seem important with 
modern network technology.  It might be important in some cases.  I wonder how 
many of those cases don't have a better solution.



-- 
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