Telecom Profile – Without Signaling Configuration Command

The profile is configured with other PTP parameters within a configuration string. In order for the Grandmaster to recognize the slave unit, the Timing Client IP address of the Timing Client needs to be configured at the Grandmaster for the Ethernet network IP protocol communication link. The Sync and Delay_Response rates at the Grandmaster are required to match the Timing Client Sync and Delay_Request packet rates.

ptp grandmaster

The parameters that are required to be configured are the profile type (0-3), priority 1 and 2 (0 to 128) PTP Domain # (0-254), one/two-step mode, the Delay_Response / Sync / Announce packet rates and announce message timeout interval, that is [profile] [priority1] [priority2] [domain number] [two step] [delay interval] announce interval] [sync interval] [announce receipt timeout]

Note: Two-step is not enabled when using TCA Timing Client as it is not required

#config ptp grandmaster 2 1 1 20 0 6 0 6 3 where [Telecom profile=2], [priority1 & 2 = 1], [domain #=20] [one-step] [Delay_Response/Request Rate= 6] [Announce Interval =0] [Sync Rate = 6] [Announce Timeout=3]
ptp gm dscp

Configures the Differential Service (DiffServ) of the IP packet which transports the PTP event and signaling messages. This should be configured to Explicit Forward (EF) which is a value of 46 decimal.

# config ptp slv gm dscp 46
ptp start-announce

Configures the announce packet start timeout value in minutes. The value can be between 0 and 120.

# config ptp start-announce 70
Effective upon reboot.
ptp unicast add

This adds the IP-address of a Timing Client (Slave) in which the Grandmaster will be sending / receiving event messages.

# config ptp unicast add 192.168.40.50
ptp unicast del

This deletes the IP-address of a Timing Client (Slave) in which the Grandmaster will stop sending / receiving event messages.

# config ptp unicast del 192.168.40.50
clear all-unicast-entry*

Clears all the Timing Clients IP-addresses

ptp unicast continuous

Configures the Grandmaster in continuously sending the ARP message to the unicast IP-Addresses in its Unicast table. These are the IP-Addresses which where configured. It is recommended that this be set to ON.

  • Continuous ON => Sends ARP request for every 2 minutes per Timing Client
  • Continuous OFF => Sends ARP request until it receives the ARP response from the Timing Client and then does not send again until either Grandmaster is reset or the IP-Address is deleted and added back.
config ptp unicast continuous ON
telecom-standard

Configures the telecom standard based on which the PTP grandmaster announces the clock class. The values can be 1 to 4.

# config telecom-standard 2 [where 2 = Telecom-G8265.1-option 1]