The default network configuration for AHV hosts and CVMs is a bond named br0-up with two or more uplinks in active-backup mode. This means that only one uplink is active at a time, while the others are in standby mode. This provides high availability, but not load balancing or increased bandwidth. To increase the bandwidth available to the AHV host and the CVM, the administrator can change the bond mode to Active-Active, which allows all uplinks to be used simultaneously. This can be done using the manage-ovs commands on each AHV host. The steps are as follows1:
Log in to the AHV host using SSH.
Enter maintenance mode on the CVM by running allssh 'cluster status | grep -i cvm | grep -i down'.
Change the bond mode to Active-Active by running manage_ovs --bond_mode active-active update_uplinks br0-up <uplink_list>, where <uplink_list> is a comma-separated list of uplink interfaces (for example, eth0,eth1).
Verify the bond mode by running manage_ovs show_uplinks.
Exit maintenance mode on the CVM by running allssh 'cluster start'.