This paper provides an introduction to the key technologies and architecture features for MPLS-based VPN services, and reviews the issues to discuss with a service provider to finalize a migration plan. Managed MPLS-based VPN services are described as they relate to the critical network requirements for today's enterprises. The paper concludes with an overview of the Cisco IOS Software features that support managed MPLS based VPN services, and two case studies describing customers that have already made the transition to a service-centric MPLS-based VPN environment.
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