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Cisco Networking Simplified by Jim Doherty, Paul Della Maggiora

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Chapter . Traffic Engineering with MPLS

Bagging and Tagging

Multiprotocol Label Switching (MPLS) is a Layer 2 WAN backbone technology that delivers virtual private network (VPN) services over Internet Protocol (IP), traffic engineering capabilities, and a converged network infrastructure that replaces traditional Frame Relay and ATM networks. Originally developed by Cisco Systems in the form of tag switching, MPLS was adopted as an Internet standard by the Internet Engineering Task Force (IETF). Service providers are the primary implementers of the technology.

Service providers offer MPLS services as an alternative to traditional Frame Relay, leased line, and ATM services. With MPLS, service providers can offer similar services to traditional WAN ...

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