Label space reduction in MPLS networks: how much can a single stacked label do?
IEEE/ACM Transactions on Networking (TON)
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Networks - Network Optimization (INOC 2007)
Designing hypergraph layouts to GMPLS routing strategies
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IEEE Communications Magazine
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The paper considers a problem of minimizing the total number of labels that are necessary to realize a given set of end-to-end connections in a GMPLS transport network where traffic is handled by means of Label Switched Paths--connections established using the label switching principle. The problem is important for the networks where labels are a scarce/expensive resource, like in optical networks. We formulate an appropriate mixed-integer programming problem and discuss the ways it can be approached by the commercial solvers. We illustrate the effectiveness of the solution with numerical examples