D-Link DGS-6600-48T Configuration Guide - Page 350
Multiprotocol Label Switching (MPLS), Overview, An Introduction to MPLS Authentication, MPLS
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Volume 5-Multiprotocol Label Switching / Chapter 33-Multiprotocol Label Switching (MPLS) Chapter Overview Chapter 33 Multiprotocol Label Switching (MPLS) Chapter Overview The following topics are included in this chapter, please go to the topic for more detailed information: • An Introduction to MPLS Authentication • An Introduction to MPLS Authentication • MPLS Operation • MPLS Configuration Commands • Enabling MPLS Function • Enabling/Disabling MPLS on Interface • Configuring MPLS QoS • Creating static LSP • Data Plane Failure Detection • LSP Ping • LSP Traceroute • Configuration Examples • MPLS, LDP (Dynamic Label) Configuration Example • MPLS (Static Label) Configuration Example • MPLS QoS Configuration Example • Configuration Restrictions An Introduction to MPLS Authentication MPLS Operation Multiprotocol Label Switching (MPLS) is a high-performance packet forwarding technology that integrates both Layer 2 fast switching and Layer 3 routing and forwarding, satisfying the requirements for speed, scalability, QoS management, traffic engineering and virtual private network (VPN) in backbone network. In conventional IP forwarding, each router independently chooses a next hop for the packet, based on its analysis of the packet's header and the results of running the routing algorithm. In MPLS, as a packet enters the network, it is assigned to a Forwarding Equivalence Class (FEC) and labeled a short fixed length value. At subsequent hops, there is no further analysis of the packet's network layer header; all forwarding is driven by the label. It makes the MPLS forwarding can be done by switches are not capable of analyzing the network layer headers at adequate speed. In MPLS, the FEC assignment can be based on any information, such as IP prefix, ingress port, packet content, etc., and the FEC assignment is flexible. Since the FEC determines the packet's forwarding behavior in the MPLS network, so the flexible FEC assignment provides powerful support for QoS and traffic engineering. DGS-6600 Configuration Guide 350