Enable or Disable TSO on a Linux Virtual Machine

Enable TSO support on the network adapter of a Linux virtual machine so that the guest operating system redirects TCP packets that need segmentation to the VMkernel.

Prerequisites

• Verify that ESXi 6.0 supports the Linux guest operating system.

  See the VMware Compatibility Guide documentation.

• Verify that the network adapter on the Linux virtual machine is VMXNET2 or VMXNET3.

Procedure

• ♦ In a terminal window on the Linux guest operating system, to enable or disable TSO, run the ethtool command with the -K and tso options.
  • To enable TSO, run the following command:

    ethtool -K ethY tso on

  • To disable TSO, run the following command:

    ethtool -K ethY tso off

  where Y in ethY is the sequence number of the NIC in the virtual machine.