Hi Miroslav, Yes, ECU1 sends Announce packet in every 2 sec , however the switch in between (NETGEAR GS724Tv4) sends Announce packet to ECU2 every 1 sec.
I tried with "logAnnounceInterval 0" in both ECU1 & ECU2 and observed the same issue as mentioned above. Thanks, Raj On Mon, Sep 12, 2022 at 2:18 PM Miroslav Lichvar <mlich...@redhat.com> wrote: > On Sat, Sep 10, 2022 at 09:18:04PM +0530, Raj wrote: > > We are observing that When ECU1 is active ECU2 initially takes a long > time > > (randomly 10 sec - 2min approx) to sync with ECU1(GM) and once ECU2 > > successfully syncs with ECU1 then after that there is no issue. ECU2 > > throwing "SLAVE to MASTER on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES" error and > > considering itself as GM by sending announce packet , after that again > > considering ECU1 as GM and going to slave mode, this fluctuation on ECU2 > is > > happening intially when ECU2 is trying to sync with ECU1 and after some > > time (randomly 10 sec -2min) ECU2 successfully getting synchronozed with > > ECU1. > > > > > > The question is why does ECU2 take more time initially to select ECU1 as > GM > > ? > > If you capture PTP traffic on ECU2, do you see announce messages from > ECU1 every two seconds (following logAnnounceInterval=1) ? > > -- > Miroslav Lichvar > >
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