NTP Server

Create NTP server profiles first before creating network policies and VGVAs that will reference them. You can also view all the NTP server profile assignments in one place here.

Create an NTP server profile when you need it during the configuration of a network policy. Basically you briefly step out of the network policy configuration to create the soon-to-be-referenced NTP server profile and then step back into the network policy to reference it. NTP server profiles created here are saved in the Common Objects NTP Servers list for future reuse.

You can create an NTP server profile at the device level for a specific VGVA to override the NTP server profile inherited from the network policy to which the VGVA belongs. The act of creating a profile while configuring device settings is similar to creating one while configuring a network policy; that is, you momentarily step out of the device configuration to create an NTP server profile and then step back into the context of configuring device settings to reference it. NTP server profiles created here are also saved in the Common Objects NTP Servers list for future reuse.

NTP Server: ON At the network policy level and VGVA device level, you have the option to toggle NTP service ON and OFF to enable and disable it. When you enable NTP service, Extreme Networks devices synchronize their time with an NTP server. When you disable NTP, devices use a manually set time.

Re-use NTP Server Settings: When configuring NTP service at the network policy or VGVA device level, you can reuse a previously configured NTP server profile. Select . In the NTP Server dialog box, select the check box of one of the profiles in the list and then select Select. If you use this option, all fields are automatically populated with the information for the selected profile.

Note

Deleting an NTP server profile from the NTP Server dialog box deletes it from the Common Objects list.

Name: Name the NTP server profile. It can contain up to 32 characters without spaces.

Description: Enter an optional description for the NTP server profile. It can have up to 64 characters including spaces. This description will appear in the profiles table and will help you identify it.

Synchronize the device clock with NTP Servers:

To add an NTP server, select +. Next to the NTP Server Host Name field, either select and select the host name or IP address of an existing NTP server or select + and define it. When you are finished, select ADD above the table to add the server to the table.

Repeat the procedure to add more NTP servers to the profile, which can have up to four. The first entry you make becomes the primary NTP server in the device configuration. The second entry becomes the secondary NTP server, and so forth. Because NTP servers are accessed in order from the top according to their position in the profile, you can use the up and down arrows to rearrange them if necessary.

Select the Apply NTP servers to devices via classification check box to add a classification to the NTP server profile. (Clear the Apply NTP servers to devices via classification check box to remove all classifications from the NTP server profile.)

Select to add an existing classification. Select an NTP object and choose Select.

Select to copy an existing classification. Select an NTP object and then Copy. Enter a name for the new object, and select Save.

Repeat to add more servers. Use the arrow keys to move a server up or down in the table. The first entry becomes the primary NTP server, the second entry becomes the secondary server, and the third entry becomes the tertiary server. Select Save.

To clone an existing classification rule from the Select Classification Rules dialog box, select the target rule, select Copy, enter a new classification rule name in the Save As text box, and then select Save.

or

To add a new rule, select in the Classification Rules column. Enter the classification rule name and optional description, select Add and select Device Location, Cloud Config Group, IP Address, IP Subnet, or IP Range from the drop-down menu, depending the classification type required. Select the Match Type (Contains or Does Not Contain), the existing classification rule, and Continue. Select Save Rule.

Use the up and down arrows in the Order column of the table to define the order in which the classification rules are considered. (Classification rules are considered using a top-down, first-match, stop-on-match method, so if a device is a member of more than one matching criteria, only the first match is applied.)