Comtech EF Data CDM-625A Installation And Operation Manual page 274

CDM-625A Advanced Satellite Modem
Ethernet-based Remote Product Management
PTP Statistics
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This statistics table breaks down the number of PTP packets sent or received on the WAN and
LAN ports as follows:
Row
Event Port
General Port
Announce
Sync
Followup
Delay Req
Delay Resp
Mgmt
Signal
Discarded
2. PTP Master Devices send Announce, Sync, Followup, and Delay Response
3. PTP is a UDP multicast protocol. When negotiating with devices over the
Description (LAN/WAN Rx/Tx Columns)
Number of packets (PTP or other) received on the PTP UDP event-message port.
Number of packets (PTP or other) received on the PTP UDP general-message port.
Number of PTP announce messages received from another PTP device.
Number of synchronization messages received from a master PTP device.
Number of follow-up messages received from a 2-step-clock master PTP device.
Number of Delay Request messages received from a slave device.
Number of Delay Response messages sent to a slave device.
Number of PTP management messages received by the modem.
Number of PTP signaling messages received by the modem.
Total number of PTP packets discarded by the modem.
Note: Some discarded messages are normal. For example, if the modem receives
a PTP message while it is configuring its PTP port, it will discard that message.
messages, while PTP Slave Devices send Delay Request messages.
LAN interface, the modem uses UDP Port 319 for events, and UDP Port 320
for general packets. On the WAN interface, the modem uses UDP Port 59319
for events, and UDP Port 59320 for general packets.
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