Specifying the PTP In-Synchronization Limit

Time-Stamping and Time Synchronization

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IntelĀ® PAC
Napatech SmartNIC
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User Guide

In this section

This section describes how to specify the limit for when a SmartNIC is in PTP synchronization.

PTP in-synchronization limit

The TimeSyncPTPInSyncLimit parameter specifies the range in ns in which a SmartNIC is considered to be in PTP synchronization. The NtTimeSyncGlobalStatus parameter in the information stream shows the status. An event is generated when the status changes.

Select a value for TimeSyncPTPInSyncLimit according to the expected and acceptable stability of the reference.

ntservice.ini code lines

The syntax for the ntservice.ini code lines specifying the limit for when a SmartNIC is in PTP synchronization is:

'TimeSyncPTPInSyncLimit' '=' ( '1' |  '2' |  '3' |  ... | '0xFFFFFFFF' )

Example:

TimeSyncPTPInSyncLimit=2500

Default value

This table shows the default value.

Parameter Default Value
TimeSyncPTPInSyncLimit 5000