The quality of service (QoS) event manager - automated implementation of QoS policies

摘要

The DoD needs reliable networks to support real-time, mission-critical applications and newer technologies such as IF-based voice and video. Network performance is sometimes reduced to unacceptable levels due to events such as congestion, equipment failure, and information-warfare attacks. A popular solution to these problems is to increase available bandwidth within local area networks and across the wide area network. For the DoD, this option is often unavailable, especially for in-theater forces. It has been demonstrated that Quality of Service (QoS) policies, created with currently available commercial products, can improve the performance of IF-based networks by orders of magnitude. However, different QoS policies are needed to address specific scenarios such as a particular operational mission, a denial-of-service attack, or bandwidth saturation. The network administrator must implement the appropriate QoS policy on an as-needed basis. This paper describes a prototype QoS Event Manager that will automate the process of QoS policy implementation. Based on inputs from network monitoring devices, routers, and humans, the QoS Event Manager will select an appropriate QoS policy and deploy it across the network. We will discuss the QoS Event Manager design and consider issues regarding the automated prioritization, tracking, and deconfliction of QoS policies.