(forwarded from) Newsgroups: comp.protocols.time.ntp Date: Tue, 23 Feb 2010 02:48:05 -0800 (PST) Message-ID: <d7efa3ba-6b72-40f8-b7e0-8aad0799d...@l12g2000prg.googlegroups.com> Subject: splash around with ntp-dev in the pool From: Dave Hart <[email protected]>
I have a prototype of a couple of new features that should go into ntp- dev soon which make ntpd a more savvy client of pool.ntp.org. I would appreciate testing and feedback. I've mentioned the first part previously to the [email protected] and [email protected] lists: A reworked "pool" directive in ntp.conf which acts as much like manycastclient as I could manage. Servers come and go automatically according to policy knobs such as maxclock, floor, and ceiling. A server which is unreachable should be removed and eventually replaced. A scoring mechanism should trim the least helpful sources and mix in some new ones over time. All of this is how manycastclient is implemented today, this is just an extension of that to a different solicitation mechanism. manycastclient sends multicast NTP client mode packets and on receipt of unicast responses, configures a preemptible association. pool now sends one unicast solicitation at a time, and reacts similarly to responses. New today is "restrict source ..." which configures a prototype access control restriction to be applied to all associations which do not already have a host-specific restriction in place when mobilized. This means you can now have broadly restrictive "restrict default" entries which would not work previously with pool sources due to their unpredictable (and now changing) numeric addresses. Unrelated to the pool support in ntpd but important if you use a refclock, there is a fix for a bug introduced in 4.2.7p18 and identified by Hal Murray: http://bugs.ntp.org/1497 All this and a guarantee it's not official: dd78f3259c25f17d9b9804040e3f6ee9 ntp-dev-4.2.7p20- poolplus-0223.tar.gz 802796fd22f8e4941784089e8d24068b ntp-dev-4.2.7p20-poolplus-0223-win- x86-bin.zip b6503ffa52e06ce6361406aef03e8fe2 ntp-dev-4.2.7p20-poolplus-0223-win- x86-debug-bin.zip http://davehart.net/ntp/pool/ http://davehart.net/ntp/pool/ntp-dev-4.2.7p20-poolplus-0223.tar.gz http://davehart.net/ntp/pool/ntp-dev-4.2.7p20-poolplus-0223-win-x86-bin.zip http://davehart.net/ntp/pool/ntp-dev-4.2.7p20-poolplus-0223-win-x86-debug-bin.zip Thanks for your time and support, Dave Hart _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
