Multiprotocol Label Switching (MPLS) is an innovative technique for high-performance packet forwarding. There are many uses for this new technology, both within a service provider environment and within the enterprise network, and the most widely deployed usage today is the enabling of Virtual Private Networks (VPNs). With the introduction of MPLS-enabled VPNs, network designers are able to better scale their networks than with the methods available in the past.Network engineers and administrators need quick, effective education on this technology in order to effectively deploy MPLS-enabled VPNs within their networks. With that goal in mind, MPLS and VPN Architectures provides the first in-depth discussion particular to Cisco&s MPLS architecture. This book covers MPLS theory and configuration, network design issues, and case studies as well as one major MPLS application: MPLS-based VPNs. The MPLS/VPN architecture and all of its mechanisms are explained with configuration examples, suggested design and deployment guidelines, and extensive case studies.