Abstract
This thesis presents the design of Multiprotocol Label Switching Virtual Private Networks(MPLS VPN). MPLS VPNs are true peer models, which perform traffic separation at Layer 3, through the implementation of separate IP VPN forwarding tables. MPLS allows ISPs to offer VPN services by providing a simple, flexible, and powerful tunneling mechanism. An ISP can deploy a VPN by provisioning a set of LSPs to provide connectivity among the different sites in the VPN. Each VPN site then advertises to the ISP a set of prefixes that are reachable within the local site. The ISPs routing system distributes this information by piggybacking labels in routing protocol updates or by using a label distribution protocol. VPN Identifiers allow a single routing system to support multiple VPNs whose internal address spaces overlap with each other. Finally, each ingress LSR places traffic into LSPs based on a combination of a packet's destination address and VPN membership information.
Doddapaneni, Krishnamohan (2001). Using Multiprotocol Label Switching in Virtual Private Networks. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -2001 -THESIS -D63.