Configure NTP Globally

Note

DEMO FEATURE - NTPv4 Master Mode is a demonstration feature on some products. Demonstration features are provided for testing purposes. Demonstration features are for lab use only and are not for use in a production environment. For more information on feature support, see VOSS Feature Support Matrix.

You can use the following procedure to globally enable NTP. For the VSP 8600 Series, you can configure the NTP version.

You can also enable master mode on the NTP server configured on the switch. When the master mode is configured, peers can synchronize themselves with the local clock when the NTP server loses synchronization or if an external NTP source is not reachable.

Before you begin

You must globally disable NTP before you change the version.

About this task

NTPv3 supports IPv4 addresses. NTPv4 supports both IPv4 and IPv6 addresses.

Procedure

In the navigation pane, expand Configuration > Edit > NTP.
Select General.
Select the Globals tab.
Select Enable.
Enter a time interval.
Note

This step only applies to VSP 8600 Series.

Select the NTP version.
Optional: To configure the switch as an NTP server, in the NTP Master section, select Enable.
In the Stratum field, enter a value.
Select Apply.

Globals Field Descriptions

Use data in the following table to use the Globals tab.

NTP Client section:


Name	Description
Enable	Enables the client NTP server. By default, NTP is disabled.
Interval Note: Exception: NTPv3 is only supported on VSP 8600 Series.	VSP 8600 Series: Specifies the time interval between successive NTP updates in minutes. The default values are: NTPv3: 15 minutes NTPv4: 6 minutes VOSS switches: Specifies the time interval between successive NTP updates as a power of 2 in seconds. The default value for NTPv4 is 2 to the power of 8 seconds.
Note: Exception: only supported on VSP 8600 Series. Version	Configures the NTP version. The default is NTPv3.

NTP Master section:


Name	Description
Enable	Enables master mode for the configured NTP server. The default value is disabled.
Stratum	Specifies the stratum for the master NTP server. The default value is 10. Note: If a better stratum is available, it is preferred over what is configured.