This MIB module defines SNMP management objects describing the AppNav technology. A device, which implements the AppNav technology, is known as the AppNav controller. The AppNav controller intelligently navigates application traffic to a group of devices, which offer services to the application traffic. A device, which offers services to the application traffic is known as service node. As an example, the WAN optimization service uses the AppNav technology, where the AppNav controller intercepts applications traffic and redirects it to service nodes, which offer the WAN optimization service. A deployment may use more than one AppNav controllers and service nodes to provide high availability and scalability. In such deployments, AppNav controllers and service nodes together form a cluster, which is known as an AppNav cluster. Definitions of various entities related to the AppNav technology is as follows: AppNav controller: It is a device that intercepts application traffic and navigates (redirects) it to service nodes. Service node: It is a device that offers services to the traffic navigated (redirected) to it by the AppNav controller. AppNav controller group: An AppNav controller group is a group of one or more AppNav controllers. The AppNav controllers in the AppNav controller group communicate with each other regarding the connections being redirected by them, so that they redirect traffic to the right service node, irrespective of which AppNav controller receives packets for a given connection. For example, if particular connection is served by the service node A then that connection should always be served by the service node A until client or server terminates it. This mechanism is needed in the asymmetric network topologies, where packets may take different paths for forward and return journey. Service node group: A service node group is a group of one or more service nodes. The AppNav controller intercepts and redirects application traffic to service nodes in a service node group. The service nodes update their load status to the AppNav controllers, so that they can do intelligent load distribution among the available service nodes. AppNav Cluster: An AppNav controller group and a service node group together form a cluster, which is known as an AppNav cluster. An AppNav cluster is also known as a service context.