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:
If the Linux bridge is configured as the network stack, the output displays:
To revert to the Linux network stack, run the following command:
Reboot your host after running this command.
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.