</devices>
...</pre>
+ <p>
+ The network access of direct attached virtual machines can be
+ managed by the hardware switch to which the physical interface
+ of the host machine is connected to.
+ <p>
+ The interface can have additional parameters as shown below,
+ if the switch is conforming to the IEEE 802.1Qbg standard.
+ The parameters of the virtualport element are documented in more detail
+ in the IEEE 802.1Qbg standard. The values are network specific and
+ should be provided by the network administrator. In 802.1Qbg terms,
+ the Virtual Station Interface (VSI) represents the virtual interface
+ of a virtual machine.
+ </p>
+ <dl>
+ <dt><code>managerid</code></dt>
+ <dd>The VSI Manager ID identifies the database containing the VSI type
+ and instance definitions. This is an integer value and the
+ value 0 is reserved.</dd>
+ <dt><code>typeid</code></dt>
+ <dd>The VSI Type ID identifies a VSI type characterizing the network
+ access. VSI types are typically managed by network administrator.
+ This is an integer value.
+ </dd>
+ <dt><code>typeidversion</code></dt>
+ <dd>The VSI Type Version allows multiple versions of a VSI Type.
+ This is an integer value.
+ </dd>
+ <dt><code>instanceid</code></dt>
+ <dd>The VSI Instance ID Identifier is generated when a VSI instance
+ (i.e. a virtual interface of a virtual machine) is created.
+ This is a globally unique identifier.
+ </dd>
+ </dl>
+<pre>
+ ...
+ <devices>
+ <interface type='direct'/>
+ ...
+ <interface type='direct'>
+ <source dev='eth0' mode='vepa'/>
+ <virtualport type="802.1Qbg">
+ <parameters managerid="11" typeid="1193047" typeidversion="2" instanceid="09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f"/>
+ </virtualport>
+ </interface>
+ </devices>
+ ...</pre>
<h5><a name="elementsNICSMulticast">Multicast tunnel</a></h5>