On Thu, Feb 19, 2015 at 04:05PM +0100, Richard Cochran wrote: > On Thu, Feb 19, 2015 at 02:00:16PM +0100, Axel Holzinger wrote: > > Hi all, > > > > I have two gPTP aware switches here and a PC with i210 and with switch A > > ptp4l is syncing fine, while with switch B not. Could anybody point me in a > > direction how I can find out what ptp4l doesn't like regarding switch B. It > > always selects itself as best master continously (i210 MAC is > > a0-36-9f-47-60-48). Prios are the same for switch A and B. > > Increase the message level to take a look at the asCapable port > variable. There are quite a number of conditions. > > Some other ideas: > > Use wireshark to find out what, if any, messages are being exchanged. > > In port.c, there are quite a few places where silently we drop invalid > messages. You can hack in a few debugging statements to find out what > is going on, especially WRT asCapable.
Well, it was a combination of all three tips. Finally I found out that gPTP.cfg sets path_trace_enabled to 1 while switch B doesn't send a path trace TLV. That was the reason for ptp4l to drop the announce message. Thanks a lot! Axel ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ Linuxptp-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxptp-users
