Enable for a Monitoring Station

A server equipped with an Enhanced PTP enabled adapter can be configured in remote monitor mode to received data from all monitored slave servers.

1. Run sfptpd-v3.2.1.
2. Create the required sync instances in the general header section:

   [general]
   sync_module ptp1  ptp_all_monitor
   json_remote_monitor /tmp/remote.jsonl 

   In the above example two instances are created:

   • [ptp1] is an optional normal PTP slave instance.
   • [ptp_all_monitor] is an optional monitor only instance.
   • The file in which monitored data is to collected is also specified.
3. In the PTP generic section:

   [ptp]
   remote_monitor

   With the remote_monitor option enabled, all configured PTP instances can monitor received PTP signaling messages.

4. In the PTP instance (ptp1) section:

   [ptp1]
   ptp_mode slave
   ptp_domain 10
   interface <interface>

   The [ptp1] instance is a normal PTP slave, but it will also monitor PTP signaling messages from domain 10 received on the specified interface.

5. In the PTP instance (ptp_all_monitor) section:

   [ptp_all_monitor]
   ptp_mode monitor
   ptp_domain 127
   interface <interface>

   The parameters in the [ptp_all_monitor] section identify this as a ptp instance in ‘monitor’ mode. The instance is assigned a unique ptp_domain value and it will monitor PTP signaling messages from all domains on the specified interface.

   ptp_mode monitor is a passive mode. The instance is not a ptp slave and not a ptp master.