I am having trouble getting PTP to work over a network bridge br0. They are both CentOS 6.5 machines with 2.6.32-504.8.1.el6.x86_64, and running linuxptp-1.3-1.el6.x86_64.
Each machine has two NICS. eth0 [e1000e] Intel I217-LM (rev 05) eth1 [igb] Intel I210 (rev 03) Here is the topology: Machine1: br0 192.168.2.1 -bridges both wlan0 and eth1 -has a dhcp server running on it. eth0 192.168.1.17 -gets it's ip from LAN eth1 -connected to eth0 on machine 2 wlan0 -provides a Wifi Access point to the 192.168.2.* network Machine2: eth0 192.168.2.7 -connected directly to eth1 on Machine1 -gets its IP from Machine1's dhcp server eth1 down What I would like to do is do the following: [Machine1 ~]# ptp4l -i eth1 -m [Machine2 ~]# ptp4l -i eth0 -m I changed the default route on Machine1 and can visually see in iptraf-ng that the ptp packets are going to 192.168.2.* and while the machine happily detects master and slave at first, nothing else happens, the Machine2 assumes grand master role.. [Machine1 ~]# ptp4l -i eth1 -m ptp4l[2847.269]: selected /dev/ptp1 as PTP clock ptp4l[2847.271]: driver changed our HWTSTAMP options ptp4l[2847.271]: tx_type 1 not 1 ptp4l[2847.271]: rx_filter 1 not 12 ptp4l[2847.271]: port 1: INITIALIZING to LISTENING on INITIALIZE ptp4l[2847.271]: port 0: INITIALIZING to LISTENING on INITIALIZE ptp4l[2853.271]: port 1: LISTENING to MASTER on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES ptp4l[2853.271]: selected best master clock d05099.fffe.09aaf4 ptp4l[2853.271]: assuming the grand master role [Machine2 ~]# ptp4l -i eth0 -m ptp4l[966.068]: selected /dev/ptp0 as PTP clock ptp4l[966.075]: port 1: INITIALIZING to LISTENING on INITIALIZE ptp4l[966.075]: port 0: INITIALIZING to LISTENING on INITIALIZE ptp4l[967.756]: port 1: new foreign master d05099.fffe.09aaf4-1 ptp4l[971.756]: selected best master clock d05099.fffe.09aaf4 ptp4l[971.757]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE ptp4l[1191.765]: port 1: UNCALIBRATED to MASTER on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES ptp4l[1191.765]: selected best master clock d05099.fffe.5df7e6 ptp4l[1191.765]: assuming the grand master role iptables is down on both machines. Works fine (as expected) with NO bridge when Machine1:eth1 192.168.2.1 (master) and Machine2:eth0 192.168.2.7 (slave). So what is the bridge messing up? And is there a way to fix it? I would appreciate any insight I can get. Even if it is a suggestion for a better topology. Thanks, Robb ------------------------------------------------------------------------------ _______________________________________________ Linuxptp-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxptp-users
