Enable or Disable LRO for All VMkernel Adapters on an ESXi Host

Use LRO in the VMkernel network adapters on an ESXi host to improve the networking performance for incoming infrastructure traffic.

Procedure

1. In the vSphere Client, navigate to the host.
2. On the Configure tab, expand System.
3. Click Advanced System Settings.
4. Edit the value of the Net.TcpipDefLROEnabled parameter.
   • To enable LRO for the VMkernel network adapters on the host, set Net.TcpipDefLROEnabled to 1.
   • To disable software LRO for the VMkernel network adapters on the host, set Net.TcpipDefLROEnabled to 0.
5. Click OK to apply the changes.