Using Virtual Coordinates in the Establishment of Inter-domain LSPs

Cristel Pelsser

MultiProtocol Label Switching (MPLS) is used inside large ISP networks to provide services with stringent Service Level Agreements such as Virtual Private Networks (VPNs). Customers are now urging ISPs to provide such services across inter-domain boundaries. This requires the ability to establish inter-domain MPLS Label Switched Paths (LSPs) with constraints. Up to now, the literature has mostly focused on mechanisms to compute LSPs inside a single AS. In this paper, we propose two heuristics to select the downstream AS and the ingress router inside this AS for the establishment of inter-domain LSPs. Then, we evaluate them in terms of the quality of the resulting paths and the number of unsuccessful attempts.

In CoNEXT Student Workshop, 2005.

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