Use virsh commands to manage virtual networks.
Before you begin
KVM hosts provide a preconfigured virtual network
named default. You can configure more virtual networks as described in Configuring virtual networks.
About this task
Virtual networks that are defined to libvirt can be in one of the states inactive
or
active
.
The following figure shows the state-transition diagram of a virtual network:
Figure 1. Virtual network state-transition diagram
Procedure
-
Creating, modifying, and deleting a persistent network definition:
| Task |
Command |
| Create a persistent definition of a virtual network configuration. |
net-define |
| Edit the libvirt-internal configuration of a defined virtual network. |
net-edit |
| Delete the persistent libvirt definition of a virtual network. |
net-undefine |
-
Managing the virtual network lifecycle:
| Task |
Command |
| Enable or disable the automatic activation of a virtual network when the
libvirt daemon is started. |
net-autostart |
| Activate a defined, inactive virtual network. |
net-start |
| Deactivate a virtual network. |
net-destroy |
-
Monitoring networks:
| Task |
Command |
| View a list of all defined virtual networks. |
net-list |
| Display the current configuration of a virtual network. |
net-dumpxml |
| Display information about a defined virtual network. |
net-info |
| Retrieve the name of a virtual network from its UUID. |
net-name |
| Retrieve the UUID of a virtual network from its name. |
net-uuid |
