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Configurations from the scenarios below are examples that demonstrate the potential capabilities of the Infinet Wireless devices. The configurations may vary depending on the model and firmware version. We do not recommend copying this solutions to the hardware without checking. |
Description
InfiLINK 2x2 / InfiMAN 2x2 and InfiLINK Evolution / InfiMAN 2x2 Evolution families units have a functional channels 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 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.
The tracked MAC address can be determined in two ways: automatically and manually. In the figure below, regardless of the selected method, the Master 1 will track the Slave 1 MAC address and the Master 2 - Slave 2 MAC address.
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Figure 1 - Redundancy with Failover option |
If InfiLINK 2x2 and , InfiMAN 2x2, InfiLINK Evolution or InfiMAN Evolution families devices are used as the main link, this gives additional advantages. In this case, both radio links can be configured with the Failover option. For both links, the quality of the established connection will be automatically evaluated. Connection with the worst indicators will automatically become a backup link. Channel selection parameters can be controlled manually.
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- Using different switch groups (figure 2a): different switch groups are used for data transmission on the main and backup links, on the Master 1-Slave 1 link switch group #1 is used, on the Master 2 - Slave 2 link switch group #2 is used.
- Using the switch border option (figure 2b): the switch border option must be enabled on all prf interfaces. At the same time, it is allowed to use the same switch groups for data transmission on the main and backup links.
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Figure 2a - Example with different switch groups
Figure 2b - Example with switch border option usage |
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When Failover option is enabled on two Infinet devices of the InfiLINK 2x2 and , InfiMAN 2x2, InfiLINK Evolution or InfiMAN Evolution families, a situation may occur when both links are equal in their characteristics (link cost). In this case, you need to manually specify which of the links will be redundant, assigning an additional cost to a specific interface. |
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