As an Enterprise Administrator, at the Edge level, you can override the Network Time Protocol (NTP) settings specified in the Profile by selecting the Override checkbox. By default, at the Edge level, the NTP Servers are deactivated.

To override NTP settings at the Edge-level, perform the following steps.


NTP has the following prerequisites:

  • To configure an SD-WAN Edge to act as an NTP Server for its Clients, you must first configure the Edge's own NTP time sources by defining Private NTP Servers under Configure > Profiles.
The SD-WAN Edge NTP Server configuration has the following limitations:
  • NTP Clients can synchronize to LAN/loopback IP address of the SD-WAN Edge as NTP server but cannot synchronize to WAN IP address.
  • NTP synchronization from another segment to LAN interface is not supported.


  1. In the SD-WAN Service of the Enterprise portal, go to Configure > Edges.
  2. Click the link to an Edge or click the View link in the Device column of the Edge for which you want to configure the NTP settings. The configuration options for the selected Edge are displayed in the Device tab.
  3. Click to expand the NTP area and select the Override check box.
  4. Under Client, from the drop-down menu, select one of the Edge interface configured in the segment as the source interface.

    When the Edge transmits the traffic, the packet header will have the IP address of the selected source interface, whereas the packets can be sent through any interface based on the destination route.

  5. Override the other NTP settings specified in the Profile associated with the Edge by following the Step 3 and 4 in Configure NTP Settings for Profiles.
  6. Click Save Changes. The NTP settings for the Edge will be overridden.

What to do next

Debugging and troubleshooting are much easier when the timestamps in the log files of all the Edges are synchronized. You can collect NTP diagnostic logs by running the NTP Dump remote diagnostic tests on an Edge. For more information about how to run remote diagnostic tests on an Edge, see VMware SD-WAN Troubleshooting Guide published at