The WiNG OS enables the creation of highly reliable networks, with several levels of redundancy and failover mechanisms to ensure continuous network service in case of outages. APs in remote sites coordinate with each other to provide optimized routing and self-healing, delivering a superior quality of experience for business critical applications. Even when WiNG site survivable APs lose communication with the controller, they continue to function, able to bridge traffic while still enforcing QoS and security policies, including stateful inspection of Layer2 (locally bridged) or Layer 3 traffic.