Trading packet headers for packet processing
IEEE/ACM Transactions on Networking (TON)
The layout of virtual paths in ATM networks
IEEE/ACM Transactions on Networking (TON)
Optimal layouts on a chain ATM network
Discrete Applied Mathematics - Special issue: network communications broadcasting and gossiping
Integrated Broadband Networks; An Introduction to ATM-Based Networks
Integrated Broadband Networks; An Introduction to ATM-Based Networks
Fault-Tolerant Virtual Path Layout in ATM Networks
INFORMS Journal on Computing
Directed virtual path layouts in ATM networks
Theoretical Computer Science - Special issue: Distributed computing
IP switching and gigabit routers
IEEE Communications Magazine
IEEE Communications Magazine
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Path Layout is a fundamental graph problem in label switching protocols. This problem is raised in various protocols such as the traditional ATM protocol and MPLS which is a new label switching protocol standardized recently by the IETF. Path layout is essentially the problem of reducing the size of the label table in a router. The size is equivalent to the number of different paths that pass through the router, or start from it. A reduction in the size can be achieved by choosing a relatively small number of paths, from which a larger set is composed using concatenation. In this paper we deal with three variants of the Path Layout Problem according to the special characteristics of paths in three label switching protocols, MPLS, ATM and TRAINET. We focus on tree networks, and show an algorithm which finds label tables of small size, while permitting concatenation of at most k paths. We prove that this algorithm gives worst case tight bounds (up to constant factor) for all three models. The bounds are given as a function of the size of the tree, and the maximum degree.