A change of WLAN controller interrupts all ongoing sessions (when operating as a gateway). These have to be reestablished by the end devices. In particular when operating as a Public Spot, please note that the user information, such as the accrued online time, is not transferred to other WLAN controllers. The online time for Public Spot users basically begins anew. - When using this Clustering solution no configuration synchronisation is done by the WLAN Controllers (HA Cluster). To synchronize the configuration the the "LANCOM High Availability Clustering Option" is needed on both WLAN Controllers. Informations regarding the configuration of such a scenario can be found in the Knowledge Base article Setting up a WLC cluster with the Setup Wizard.
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