PTP: Clock clients: Automatic client

A clock client (also sometimes referred to as a timeReceiver) is included in the configuration of the primary clock. It is the remote PTP host which receives time from the PTP primary and is in a client relationship to the primary. An automatic timeReceiver is configured with an IP address, which includes the subnet mask, indicating that any remote PTP host belonging to that subnet can join the timeTransmitter clock through a unicast negotiation. 

To configure an automatic timeReceiver, include the subnet mask in the clock-client ip-address statement at the [edit protocols ptp master interface interface-name unicast-mode] hierarchy level