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InfiLINK 2x2 and InfiMAN 2x2 families units have a functional channels redundancy function. A hot reserve might be created by using the Failover option. The Failover option does not depend on the method of data transmission on the main link. The only condition is connectivity at level 2 between Infinet Wireless devices through both links.
The principle of operation is extremely simple. The Infinet Wireless device, on which the Failover option is configured, checks the availability of a specific MAC address through the primary link. If this MAC address is available, then the operation of the backup link is blocked. The radio module stops broadcasting on the backup master. The reserved slave device only listens to the radio while there is no signal from the master. Thus, the backup link can operate on the same frequency as the main one, but it does not have any influence on it. As soon as the tracked MAC tracked MAC address disappears in the main link, the backup link will be unlocked and traffic will begin to be transmitted over it. The process is completely automatic. However, the transition to a backup link is associated with a short-term idle time. Traffic will return automatically to the primary link as soon as backup link is failure. For example, in the figure below, if the Master 1 - Slave 1 link is selected as the main one, the Master 2 device will turn off the radio interface, and the Slave 2 device will switch to the broadcast listening mode.
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