Hi John, I just realized that my unicast_request_duration was set to default (3600 sec). Setting it to a lower values (like 10 seconds) made the ptp client reelect the grand master and get tuned without any problem.
Hope it helps. Regards, Jawad ________________________________ From: John Lemonovich <john.lemonov...@foresys.com> Sent: Monday, February 25, 2019 8:31 PM To: jawad ahmed saleemi; linuxptp-users@lists.sourceforge.net Subject: RE: [Linuxptp-users] Udpv6 support in unicast mode Jawad, We’re having the exact same issue. Our slaves are various Intel FPGA Arria 10 SoC FPGAs and our application is using 802.1AS (gPTP) – not unicast. I did capture all the packets in tshark during the GM down and back up sequence, but even after the announce messages start coming in again from the GM – the slave won’t re-select our GM as the BMC. If I restart ptp4l and/or bring the network interface down and back up – it will then resync. I wondered what would happen if I set the gmCapable to 0, but our slaves still assume the GM role, even with this set to 0. Let me know if you find something, and I’ll do the same. Thanks, John From: jawad ahmed saleemi <jawad.sale...@hotmail.com> Sent: Monday, February 25, 2019 5:36 AM To: linuxptp-users@lists.sourceforge.net Subject: Re: [Linuxptp-users] Udpv6 support in unicast mode Hi, In unicast mode, does the ptp4l slave recover if the grand master goes down and come up again. I am testing my setup in the unicast mode and when I restart the ptp grand master, the ptp slave does not reconnect to the grand master. I have to restart the ptp slave as well for it to chose the grand master again. Here are my settings on the slave machine. [ni6] syncReceiptTimeout 0 network_transport UDPv4 logSyncInterval 0 logMinPdelayReqInterval 0 logMinDelayReqInterval 0 announceReceiptTimeout 10 unicast_master_table 1 [unicast_master_table] table_id 1 logQueryInterval 0 UDPv4 10.10.85.11 [global] unicast_req_duration 3600 unicast_listen 1 uds_address /var/run/ptp4l udp_ttl 20 udp6_scope 0x0E tx_timestamp_timeout 1 twoStepFlag 1 p2p_dst_mac 01:80:C2:00:00:0E offsetScaledLogVariance 0xFFFF ntpshm_segment 0 network_transport UDPv4 net_sync_monitor 0 neighborPropDelayThresh 20000000 max_frequency 900000000 masterOnly 0 inhibit_multicast_service 1 ingressLatency 0 hybrid_e2e 1 dataset_comparison ieee1588 clock_type OC clockClass 248 clockAccuracy 0xFE assume_two_step 0 Any help would be much appreciated. Thanks. Best regards, Jawad ________________________________ From: jawad ahmed saleemi <jawad.sale...@hotmail.com<mailto:jawad.sale...@hotmail.com>> Sent: Thursday, February 21, 2019 7:26 PM To: linuxptp-users@lists.sourceforge.net<mailto:linuxptp-users@lists.sourceforge.net> Subject: [Linuxptp-users] Udpv6 support in unicast mode Hello all, We are using linuxptp at our work place and I was wondering why there is no support for Udpv6 in the unicast mode. I can not think of any technical reasons for that since it is supported in multicast mode via network_transport parameter. Hoping to understand it better ?? Thanks. Best regards, Jawad
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