Product Documentation

vSwitch Networks

Jun 13, 2017
vSwitch Networks
Prev Chapter 4. Networking Next

When used with a controller appliance, vSwitch networks support open flow and provide extra functionality, such as Access Control Lists (ACL). The controller appliance for the XenServer vSwitch is known as the vSwitch Controller: it lets you monitor your networks through a graphical user interface. The vSwitch Controller:

  • Supports fine-grained security policies to control the flow of traffic sent to and from a VM.

  • Provides detailed visibility into the behavior and performance of all traffic sent in the virtual network environment.

A vSwitch greatly simplifies IT administration in virtualized networking environments—all VM configuration and statistics remain bound to the VM even if it migrates from one physical host in the resource pool to another. See the XenServer vSwitch Controller User Guide for more details.

To determine what networking stack is currently configured, run the following command:

xe host-list params=software-version  

In the command output, look for network_backend. If the vSwitch is configured as the network stack, the output displays:

network_backend: openvswitch

If the Linux bridge is configured as the network stack, the output displays:

network_backend: bridge

Note

To revert to the Linux network stack, run the following command:

xe-switch-network-backend bridge

Reboot your host after running this command.

Warning

The Linux network stack is not open-flow enabled, does not support Cross Server Private Networks, and cannot be managed by the XenServer vSwitch Controller.


Prev Up Next
Chapter 4. Networking Home XenServer Networking Overview