MPLS-over-GRE based VPN architecture: A performance comparison
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Lee, W.; Bhagavathula, R.; Thanthry, N.; Pendse, R.; , "MPLS-over-GRE based VPN architecture: a performance comparison," Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on , vol.3, no., pp. III-280- III-283 vol.3, 4-7 Aug. 2002 doi: 10.1109/MWSCAS.2002.1187027
MPLS VPNs are one of the most widely deployed VPN architectures in the global Internet. However, a major prerequisite for MPLS VPN is the support for MPLS in all the provider core routers. The situation becomes complicated when service providers themselves use a backbone carrier to bring connectivity to their networks since the ability of the backbone to support MPLS connectivity would be crucial to the service provider. MPLS-over-GRE (generic routing encapsulation) tunnels are a new concept that has been proposed to bring MPLS connectivity between networks that are connected by an IP-only network. The aim of the current paper is to evaluate the performance of MPLS carrier supporting carrier configuration with and without MPLS-over-GRE tunnels.
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