The information below is largely based on the following articles from Red Hat Knowledge Base:

• https://access.redhat.com/kb/docs/DOC-22959
• https://access.redhat.com/kb/docs/DOC-35379
• https://access.redhat.com/kb/docs/DOC-37288

Ultimately this is the configuration we are creating. Two (or more) ethernet connections, bonded together to create a highly-available and possibly also a high-bandwidth connection. Then virtual instances are created on the bond for each VLAN needed, a VLAN is paired with a Bridge. The Bridge is what is given to each guest OS as its network connection.

• Make sure that the 8021q kernel module is loaded
• Configure bonding interfaces normally
• To create a VLAN virtual instance:
  • Copy ifcfg.bondX to ifcfg.bondX.N where N is the VLAN number
  • Change DEVICE to bondX.N where N is the VLAN number
  • Add VLAN=yes to file
  • Add BRIDGE=bridge_name to file
• Add ifcfg script for bridge:
  • Named ifcfg.bridgeN where N is the VLAN number
  • Add TYPE=Bridge to file (case-sensitive!)

The setup is the same as KVM with the following exceptions:

• Remove network-script syntax from xend-config.sxp