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        <h1>Network management architecture</h1>
        <ul><li>
            <a href="#architecture">Architecture illustration</a>
            <ul><li>
                <a href="#logical">Logical diagram</a>
              </li><li>
                <a href="#physical">Physical diagram</a>
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        <h2>
          <a name="architecture" id="architecture">Architecture illustration</a>
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        <p>
      The diagrams below illustrate some of the network configurations
      enabled by the libvirt networking APIs
    </p>
        <ul><li><strong>VLAN 1</strong>. This virtual network has connectivity
        to <code>LAN 2</code> with traffic forwarded and NATed.
      </li><li><strong>VLAN 2</strong>. This virtual network is completely
        isolated from any physical LAN.
      </li><li><strong>Guest A</strong>. The first network interface is bridged
        to the physical <code>LAN 1</code>. The second interface is connected
        to a virtual network <code>VLAN 1</code>.
      </li><li><strong>Guest B</strong>. The first network interface is connected
        to a virtual network <code>VLAN 1</code>, giving it limited NAT
        based connectivity to LAN2. It has a second network interface
        connected to <code>VLAN 2</code>. It acts a router allowing limited
        traffic between the two VLANs, thus giving <code>Guest C</code>
        connectivity to the physical <code>LAN 2</code>.
        </li><li><strong>Guest C</strong>. The only network interface is connected
        to a virtual network <code>VLAN 2</code>. It has no direct connectivity
        to a physical LAN, relying on <code>Guest B</code> to route traffic
        on its behalf.
      </li></ul>
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