Re: [Linuxptp-devel] [PATCH] Add reverse sync measurement method.

2018-09-03 Thread Michael Walle
Am 2018-08-18 01:39, schrieb Richard Cochran: On Sat, Aug 18, 2018 at 01:08:27AM +0200, Michael Walle wrote: calnex and ixia (and i guess spirent too) support reverse sync to measure the clock accuracy. Those two have showed zero interest in helping linuxptp. Why should we help them? Think

Re: [Linuxptp-devel] [PATCH] Add reverse sync measurement method.

2018-08-17 Thread Richard Cochran
On Fri, Aug 17, 2018 at 07:39:15PM -0400, Richard Cochran wrote: > If this reverse sync thingy makes it into 1558 v2.1 or the next > 802.1-AS revision, then we can consider supporting it. BTW, is this reverse sync present in the current drafts for either standard? I don't recall seeing it, but if

Re: [Linuxptp-devel] [PATCH] Add reverse sync measurement method.

2018-08-17 Thread Richard Cochran
On Sat, Aug 18, 2018 at 01:08:27AM +0200, Michael Walle wrote: > calnex and ixia (and i guess spirent too) support reverse sync to measure the > clock accuracy. Those two have showed zero interest in helping linuxptp. Why should we help them? If this reverse sync thingy makes it into 1558 v2.1

Re: [Linuxptp-devel] [PATCH] Add reverse sync measurement method.

2018-08-17 Thread Michael Walle
Am 17. August 2018 18:07:30 MESZ schrieb Richard Cochran : >On Tue, Aug 14, 2018 at 02:56:44PM +0200, Michael Walle wrote: >> AVnu specifies a measurement method to remotely measure the clock >> quality. Basically, this method sends Sync and/or Follow-up messages >on >> a slave towards the master,

Re: [Linuxptp-devel] [PATCH] Add reverse sync measurement method.

2018-08-17 Thread Richard Cochran
On Tue, Aug 14, 2018 at 02:56:44PM +0200, Michael Walle wrote: > AVnu specifies a measurement method to remotely measure the clock > quality. Basically, this method sends Sync and/or Follow-up messages on > a slave towards the master, which can capture them and measure the > quality. We already ha

[Linuxptp-devel] [PATCH] Add reverse sync measurement method.

2018-08-14 Thread Michael Walle
AVnu specifies a measurement method to remotely measure the clock quality. Basically, this method sends Sync and/or Follow-up messages on a slave towards the master, which can capture them and measure the quality. The AVnu specification [1] introduces three parameters: - reverseSyncEnabled - rev