kb...@n1k.org said: > Given the relatively low cost of a GPS based âStratum 1â NTP, itâs not > real > clear why (at the end of the paper) they go off and âexchange emails > individually with the organizations that run stratum 1 servers, as well as > negotiate permission to use them.â to source the root time for the system. > I > would have thought that some sort of combo of on site and off site sources > would be at the âtop of the treeâ.
I have no inside information... Maybe reading between some lines. It's a tangled mess. Some of their 180 sites do not have stratum 1 servers and/or they may want to use external stratum 1 servers for sanity check and backup. Many sites with stratum 1 servers do not want the load they would get from general public access but are happy to allow access for a good reason. Negotiating that access would probably involve email. They are using (old) shared key authentication. (probably because the servers they want to talk to don't support NTS yet) That requires out of band communications to setup the shared key. Email is probably the most convenient way to do that. -- These are my opinions. I hate spam.
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