Configure NTP Server Policy Settings

NTP is a critical service for ExtremeCloud managed devices and is required to permit each device to securely connect with ExtremeCloud‌ IQ and related services and to ensure alerts and events have the correct timestamp.

Out of the box, and by default, Extreme Networks access points (APs) and switches try to contact the NTP server assigned by your DHCP server. If your DHCP server does not advertise an NTP server, the device will automatically attempt to resolve and connect to the NTP server at 0.aerohive.pool.ntp.org. Device DNS must be functioning correctly to contact the NTP server.

Either your DHCP-defined NTP server or the default NTP server must be reachable outbound on UDP port 123 by each device connecting to ExtremeCloud‌ IQ.

Note

Note

If using a Windows server as your NTP server, your Windows server must in turn synchronize with an upstream NTP server for Extreme APs to trust and accept responses from the Windows NTP server.
The NTP server settings defined in this part of the network policy configuration workflow are written to the configuration of your managed device after initial connection.
Note

Note

If enabled, these NTP server settings will override the default NTP behaviors of your managed device. The NTP servers defined here must be reachable from your managed devices on outbound on UDP port 123.

Use this task configure NTP Server policy settings for a network policy.

  1. Go to Configure > Network Policies.
  2. Select an existing network policy, and then select Edit, or select Add to create a new policy.
  3. From the Policy Settings menu, select NTP Server.
  4. Toggle the NTP Server setting to ON.
  5. Optional: To use existing NTP server settings, choose an NTP object from the Select menu.
  6. Configure NTP Server Settings.
  7. To add a new NTP server to the list, select Add.
    1. To use an existing NTP server, select it from the Select menu.
    2. To add a new NTP server, select Add, and then select IP Address or Host Name.
    3. Type a Name for the new IP object.
    4. Optional: If you want to change your previous selection, select IP Address or Host Name from the menu.
    5. Select SAVE IP OBJECT.
    6. Select ADD.

    ExtremeCloud IQ accesses NTP servers in order, from the top down. Use the up and down arrows to rearrange them if necessary.

  8. If you want to use classification, select Apply NTP servers to devices via classification.
  9. Select SAVE NTP SERVER.
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