Re: [Linuxptp-users] Question re: boundary clock behavior?
PTP IEEE 1588 stack for Linux
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From: Richard C. <ric...@gm...> - 2019-01-19 18:50:41
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On Fri, Jan 18, 2019 at 06:55:43PM +0000, Corey Stinson wrote: > However, if port 1's grand master goes away due to, specifically, > port 1 being disconnected from its switch, wire physically cut, > etc. this (correctly) reverts port 1 to Fault state. According to > IEEE 1588 specifications, such a fault shall not translate to other > ports on the node. Therefore, Parent Data Sets are not updated for > port 2 and continue to reflect the prior grand master configuration > even though that grand master is no longer available. Once the upstream Announce messages time out, then the Parent Data Set will revert back to the BC's default data set. > I feel as though I must be missing something obvious? You forgot the announce timer on the BC. Thanks, Richard |