Network policy management
Wetzel, Paul A.
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Effective military and commercial use of Internet to conduct mission critical and commerce oriented transactions over shared networks is increasingly inhibited by the shortcomings of the very enabling technology of the Internet - the TCP/IP protocol. Without network performance, security and other management controls, TCP/IP networks can't meet the overall requirements of a network. To complicate the network policy management issues, new applications are exchanging increasingly larger amounts of digital data (image, audio, video, etc.), and some of them require stringent Quality-Of-Service (QOS) measured by delay and loss from the network. This places very diverse but demanding requirements on the network in terms of bandwidth and data delivery dependencies on the network. In many cases this network traffic diversity has led to major network performance and reliability problems as well as a resultant loss of productivity among network users. Typical 10Mbit Ethernet LANs or even 100Mbit switched LANs running TCP/IP are no longer adequate to handle the various types of next generation applications being written and the existing mission critical applications. The bottom line is that more than bandwidth is required and the existing network infrastructure installed base make it impossible to quickly change to a new standard such as ATM for all desktop connections. As a result there is a growing need for management tools capable of running a new generation of applications over existing infrastructure. These requirements have not gone unnoticed by Government and commercial enterprises, network infrastructure vendors or the standards bodies.
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