Network Redundancy
Q-SYS Core processors and many Q-SYS peripheral devices have two LAN ports: LAN A and LAN B. LAN A is the default, primary port. LAN B is the backup or redundant port. Peripherals can be configured in Q-SYS Designer Software to use LAN B as a backup ("Is Network Redundant" property). For each audio peripheral with the "Is Network Redundant" property enabled, the Core establishes redundant Q-LAN audio streams to and from that peripheral. These streams are always active, allowing the Core and peripherals to use the audio streams from LAN B if there is a problem with LAN A.
Note: The Core only establishes redundant Q-LAN audio and control streams with those peripherals that are configured in Q-SYS Designer as "Is Network Redundant" (using LAN B). This means that those peripherals not configured and physically wired to use both LAN ports cannot make use of network redundancy.
Network Failover
If a port, switch, or link is lost, there is no failover time, and no interruption of the audio stream. The control communication streams, while not necessarily constantly replicated over the two ports, will also failover seamlessly.
Network Requirements for Redundancy
There are network configuration and topology considerations to understand when implementing Q-SYS Network Redundancy. Refer to Network Switches & Infrastructure and Addressing & Routing.
Stream Usage
For the Core 110f and Core 110c, a redundant Q-LAN stream is counted as two streams. For all other Cores models, a redundant Q-LAN stream is counted as one stream.
