This article refers to the Barracuda Backup Legacy Release firmware or newer running on Barracuda Backup Server models 690 and above.
Link Aggregation (LAG) allows you to bond two or more ports in parallel to achieve greater throughput. LAG has the following properties:
- LAG provides automatic recovery when individual physical links fail. As long as at least one physical link exists, the LAG connection continues to exist.
- Data transmission is distributed as frames over the physical links.
- All frames forming part of a specific data communication packet are transmitted over the same physical connection, ensuring delivery of the individual frames of a data communication packet in the correct order, preventing disordering.
Barracuda Networks uses Mode 4 (802.3ad) bonding, known as Dynamic Link Aggregation mode. This mode creates aggregation groups that share the same speed and duplex settings, and requires a switch that supports IEEE 802.3ad Dynamic link.