A Dynamic Connection Management Scheme for Guaranteed Performance 
	Services in Packet-Switching Integrated Services Networks.

	Colin Parris and Domenico Ferrari.

		With the demand for multimedia and computational science
		applications, guaranteed performance communication services 
		have become a necessary feature of future high-speed networks.
		These communications services should possess a high level 
		of sophistication so that they can easily adapt the network 
		to the wide variety of applications soon to be seen, thereby 
		allowing the network to increase its availability and 
		flexibility. Availability is the ability of the network to 
		accommodate as many real-time clients as possible without 
		violating any client's performance guarantees, while 
		flexibility is the ability to adapt to changing network 
		state and client demands in order to maintain the 
		performance guarantees and quality of service promised 
		to the client. Flexibility also refers to the ability
		of the network to easily increase the variety of real-time 
		services that it offers. It is our contention that 
		availability and flexibility can be enhanced in a network
		by providing the network with the ability to modify the 
		performance parameters and/or the route of any guaranteed
		performance connection in the network without violating 
		the previously made performance contracts.

		In this paper, we present a scheme for dynamically managing 
		guaranteed performance service connections and experimental 
		results to verify the correctness and usefulness of the scheme.
		The motivation for this scheme, Dynamic Connection Management 
		(DCM), is discussed, and detailed descriptions of the DCM
		modification contracts and algorithms are provided. A survey 
		of guaranteed performance services protocols, architectures, 
		and routing algorithms are presented together with their 
		relevance to this work. A simulator has been built, and 
		preliminary experiments and analyses were done on the scheme. 
		The paper concludes with a summary and some topics for 
		future work.