PTP capabilities

PTP messages are supported through IPv4 unicast with a fixed IP header size. The following table describes the supported message rates for timeReceiver and timeTransmitter states. The ordinary clock can only be used in the timeReceiver state. The boundary clock can be in both of these states.

Table: Support message rates for timeReceiver and timeTransmitter clock states

Support message

timeReceiver clock

timeTransmitter clock

Request rate

Grant rate

Min

Max

Announce

1 packet every 2 seconds

1 packet every 2 seconds1

1 packet every 2 seconds1

Sync

User-configurable with an option to configure 8/16 packets per second

8 packets/second1

16 or 64 packets/second1

Delay_Resp

User-configurable with an option to configure 8/16 packets per second

8 packets/second1

16 or 64 packets/second1

Duration

300 seconds

1 second

1000 seconds

State and statistics data for each timeTransmitter clock are available to assist in the detection of failures or unusual situations.

1 Maximum PPS depends on the profile in use