To configure system time on a 7705 SAR
Before you begin
You can configure system time updates, based on priority values. There are five system time reference types: PTP, GPS, GNSS, NTP, SNTP, and the default value, Holdover. PTP is supported on the 7705 SAR-8, 7705 SAR-18, 7705 SAR-A, 7705 SAR-A T1/E1, 7705 SAR-Ax, 7705 SAR-H, 7705 SAR-Hc, 7705 SAR-M, 7705 SAR-M ASAP, 7705 SAR-W, and 7705 SAR-Wx. GPS is supported on the 7705 SAR-H and 7705 SAR-Wx GPS variants. GNSS is supported on the 7705 SAR-8 CSMv2 with shelf v1 or v2, 7705 SAR-18, and 7705 SAR-Ax configured with a GNSS MDA.
Time references become qualified for use when they provide a valid input into system time. Of the qualified time references, the highest priority, which is the lowest numerical priority value, becomes the selected time reference. If all five time references are operationally up, the order of priority for the selected time reference is PTP or GPS, depending on which one has the lowest numerical priority value, then NTP, SNTP, and Holdover. When PTP or GPS are selected time references, the operational states of NTP and SNTP are automatically down.
Steps
1 |
In the navigation tree equipment view, right-click on the 7705 SAR on which you need to configure system time, and choose Properties. |
2 |
Click on the Time tab and on the Input References tab. |
3 |
Click Create. The Time References (Create) form opens. |
4 |
Configure the required parameters. If you configure the Ref Type parameter as PTP, a PTP clock and priority value must be assigned. If you configure GPS or GNSS, a GPS port or GNSS port and priority value must be assigned. See To configure an IEEE 1588 PTP clock on a 7705 SAR for more information about configuring a PTP clock on a 7705 SAR. |
5 |
Save your changes and close the form. End of steps |