Set a global configuration for the layer 3 forwarding mode and the Maximum Transmission unit (MTU). IPv4 layer 3 forwarding is enabled by default. You can also configure IPv6 layer 3 forwarding.


  1. From your browser, log in with admin privileges to an NSX Manager at https://<nsx-manager-ip-address>.
  2. Select Networking > Global Networking Config.
  3. In the Global Networking Config tab, click Edit next to Global Gateway Configuration.
    1. Enter a value for the Gateway Interface MTU.
      The default value is 1500.
    2. Select the layer 3 forwarding mode.
  4. Click Save.