<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <body> <h1>Network management architecture</h1> <ul id="toc"></ul> <h2><a name="architecture">Architecture illustration</a></h2> <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> <h3><a name="logical">Logical diagram</a></h3> <p class="image"> <img src="libvirt-net-logical.png" alt="Logical network architecture"/> </p> <h3><a name="physical">Physical diagram</a></h3> <p class="image"> <img src="libvirt-net-physical.png" alt="Physical network architecture"/> </p> </body> </html>