A dynamically extensible control plane is a key enabling feature of next generation intelligent self-configuring networks. This extensibility can be achieved by enabling service deployment into the control plane of a network. These services consume unpredictable amounts of resources at node with unknown resource availability. This paper presents an autonomic resource management model for extensible control plane, called C-QoS. Under the C-QoS model, services are classified into classes according to their importance or QoS requirements. Resources are allocated among classes according to a differentiated per-class resource allocation scheme, while Services within a class receive fair treatment. Due to the difficulty of determining resource availability in heterogenous infrastructure or service resource requirements, this scheme is dynamically adaptive to each resource according to its demand patterns.