The system date and time can be set automatically using either an NTP server or a PTP server. A unit can also act as an NTP server if you select the Enable NTP server option.
To set up an NTP-PTP configuration job
-
Access the page Commission â–¶ Jobs.
-
Set all common configuration job settings, as described in "Creating Configuration Jobs in GUI Mode" and in "Creating Configuration Jobs Using Data Sets".
-
Select NTP-PTP in the left pane. The NTP-PTP tab is displayed.
-
Complete all fields in the NTP-PTP tab as required. For more information on specific parameters, see the table below.
-
Click Apply, then click Close.
-
Click the Refresh
button to refresh the user interface.
NTP-PTP tab (Commission â–¶ Jobs)
Configuration
| Parameter | Description |
|---|---|
| Type | Select the type of automatic time source to be used on the device. Possible values: NTP, PTP or PTPv2. When you select a type, the relevant fields in the rest of the page are enabled. |
NTP configuration
| Parameter | Description |
|---|---|
| Enable NTP | Sets the system time automatically by polling an NTP server. Select a server from the list or add your own. |
| High resolution sync | If this field is set to True, high-resolution hardware synchronization is enabled. In this mode, the NTP server is queried multiple times and the resulting time is derived from an averaging process based on a hardware clock. If this field is set to False, the NTP server is queried only every 30 minutes and the system time is set accordingly, without further processing. |
| Time interval (s) | Sets the amount of time after which the unit synchronizes with the NTP server. Expressed in seconds. Valid range is 8 to 300 seconds. |
| Number of messages | When using NTP, the number of synchronization messages exchanged with the NTP server during each time interval. Valid range is 5 to 60. |
| Pri master address Sec master address |
IP addresses of the primary and secondary NTP servers. |
| Enable NTP server | Enables use of the NTP server service. The device becomes an NTP server and can be used by other devices as an NTP server. |
| Clock name | Unique identifier of a clock. |
PTP configuration
| Parameter | Description |
|---|---|
| Enable PTP | Sets the system time automatically by polling a PTP master. The unit uses the masters from the list according to the Precision Time Protocol. |
| UTC offset for master enable | When using PTP, enable the use of UTC offset from the master clock. |
| Pri master address Sec master address |
The IP address of the primary PTP server. The IP address of the secondary PTP server. |
| Pri domain number Sec domain number |
When using PTP, the domain number of the primary and secondary PTP servers. |
| Announce interval | When using PTP, the announce interval for unicast negotiation. The interval, expressed in seconds, is the base 2 logarithm of the Announce interval. For example, if -1 is selected, the announce interval is 0.5 seconds. Possible values are:
|
| Sync interval | When using PTP, the synchronization interval for unicast negotiation. The interval, expressed in seconds, is the base 2 logarithm of the Sync Interval. For example, if -3 is selected, the announce interval is 0.125 seconds. Possible values are:
|
Priority settings
| Parameter | Description |
|---|---|
| DSCP | The priority for the DSCP (Differentiated Services Code Point ) can be set by selecting a value in the drop-down list. |
| VLAN Priority | If the link is through a VLAN, the priority of the VLAN frames can be set in the VLAN priority bits. Possible values: 0 to 7 |
PTPv2 configuration
Supported devices:
- Provider Connectivity Assurance Sensor LT
- Provider Connectivity Assurance Sensor LX
| Parameter | Description |
|---|---|
| Clock enable | Enables the PTP Precision Time Protocol clock synchronisation module. |
| Inbound criterion | Max threshold for synchronisation to declare synchronisation state. Available options are 1 microsecond, 100 microseconds or class-b Note: The class-b option is available only for platforms (e.g: LX-SyncE) that support Class-B compliant (See ITU-T G.8273.2) |
| Prio1 | A user configurable designation, where the clock belongs to an ordered set of clocks from which a master is selected. Acceptable values range from 0 to 255 |
| Clock class | An attribute defining a clock’s TAI traceability Acceptable values range from 0 to 254. |
| PTP profile | Default PTP profiles set by the administrator. PTP (IEEE1588-2008) introduced Profile, permitting a liberty on prerequisites, parameters, and algorithm to handle the synchronisation. Supported profiles:
|
| Prio2 | A user configurable designation, which provides finer grained ordering among otherwise equivalent clocks. Acceptable values range from 0 to 255 |
General
| Parameter | Description |
|---|---|
| PTP port name | Name of the PTP port. |
| Domain | The domain number. Range: 0-255 |
| Mode | Multicast or Unicast |
| Port mode | The PTP port mode. Specifies the state of PTP port. Possible values:
|
| Unicast Interval | Interval between request of Announce/Sync/Delay Response interval; expressed in seconds. Acceptable values range from 60 to 1000. |
Message frequencies
| Parameter | Description |
|---|---|
| Announce | Specifies the interval of Announce messages. Possible values are:
|
| Announce Receipt Timeout | Specifies the number of Announce messages that can be lost before a timeout occurs. Range: 2-10 (default is 3) |
| Sync Interval | Specifies the interval of Sync messages. Possible values are:
|
| Sync Rec Timeout | Specifies the number of Sync messages that can be lost before a timeout occurs. Range 2-10 (default is 3) |
| Delay Request Offset | Specifies delay request offset based on the sync interval. Range: 0-5 |
| Delay Response Timeout | Specifies the number of Delay Response messages that can be lost before a timeout occurs. Range 2-10 (default is 3) |
| Default Priority | The localPriority is assigned to a PTP port. This attribute is used when configuring the PTP port in the Telecom Profile ITU-T G.8275.1. Range: 1-255 |
Network
| Parameter | Description |
|---|---|
| Address | The layer-2 multicast destination address. Both the non-forwardable multicast address 01-80-C2-00-00-0E and the forwardable multicast address 01-1B-19-00-00-00 are supported. |
| Interface | A name to identify the interface. Indicates the interface used to exchange the PTP messages. Default is Management. |
| DiffServ Code Point | The DiffServ Code Point to set in the generated packets. Applies to Layer-3 traffic only. Expected length: 6 bits |
| Priority Code Point | When using PTP, the priority of the VLAN frames can be set in the VLAN priority bits if the link is through a VLAN. Range: 0-7 |
| Time to live | The Time To Live (TTL) is the limit on the number of hops a packet is allowed before it is dropped. Range: 1-255 |
GRANTOR
| Parameter | Description |
|---|---|
| Grantor name | Name of the PTP grantor. |
| PTP port name | Name of the PTP port. |
| Hostname / Address | Name or Address of the PTP master. |
| Domain number | The domain number. Range 0-255. |
| Interface | Name of the interface used to communicate with the PTP master. Default is Management. |
| Priority | The priority of PTP master. Acceptable values: 0 (disabled), 1 (best) and 2 (worst). |
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