On Mon, Sep 05, 2022 at 06:06:23PM +0000, Zdenek Chaloupka via Linuxptp-devel wrote: > It seems that the reason for that is that this particular GMs do not reply to > Delay_Req messages with PTP minor version set to 1. Below find a fragment of > the Delay_Req message from wireshark dump. As soon as I change the PTP minor > version of the Delay_Req to 0, the Delay_Resp messages are transmitted by GM. > > I am not an expert on the 1588-2019 protocol, so not sure what should be the > expected behavior of the GM. > > Any ideas what should be the expected behavior?
To me that looks like a bug in the GM PTP implementation. In 1588-2008 that field is reserved, requiring implementations to set it to 0 on transmission and ignore on reception. In 1588-2019 it is set to 1 on transmission and ignored on reception. -- Miroslav Lichvar _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
