Viewing the PTP Foreign Source Details
Use the PTP Foreign Source page to view the PTP details of the source that is learned by a port. The foreign source record will be available only when a port is in the receiver state. To view this page, go to Settings > Date and Time > PTP Foreign Source.
In 1, you can see that there is no foreign sourcerecord for the port 1/1/c13 because the port is in the source state. Whereas, the foreign source record appears for the port 1/1/c29, which is in the receiver state.
1 | PTP Foreign Source Details |
Following table lists the PTP foreign source attributes and their descriptions:
PTP Foreign Source Attribute |
Description |
Port ID / Port Alias |
The port identifier. |
Box ID |
The box identifier of the device. |
Best Source |
The best source clock for the device. |
Port Identity |
The clock identity of the foreign source that the port has learned. |
Primary Source Priority2 |
The priority value of the primary source that is used when Primary source Priority1 value is the same for different sources in a network. |
Announce Msg Count |
The total number of announce messages that were sent and received by the port. |
Steps Removed |
The number of boundary clocks between the local clock and the foreign source clock. |
Primary Source Clock Identity |
The clock identity of the primary source. It is a 64-bit global identifier (EUI-64) as defined by the IEEE standard. |
Port Module Number |
The module number of the physical port. |
Port Number |
The physical port identifier. |
PTP Protocol |
The protocol used by the PTP is IPv4 Ethernet. |
Clock Address |
The IP address that is derived based on the clock ID. |
Primary Source Priority1 |
The priority value of the primary source clock. Lower value takes precedence. |
Last Sync |
The time when the last synchronization message was sent by the foreign source to the receiver. |
Last Follow Up |
The time when the last follow-up message was sent by the receiver to the foreign source. |
Last Delay Response |
The time when the last delay response was sent by the foreign source to the receiver. |
Mtsd Scaled Avar |
MTSD-scaled Allan variance (nsec-sq). |
Quality Class |
The traceability of the time or frequency distributed by the foreign source clock. |
Quality Offset |
The log variance field of the announce message. |
Quality Accuracy |
The clock accuracy indicates the expected accuracy of the foreign source clock. |