MPLS Overview

This chapter describes Multiprotocol Label Switching (MPLS) and contains the following sections:

• MPLS Overview
• Terminology for MPLS Topics
• MPLS Terms and Acronyms
• MPLS Features
• MPLS Platform Considerations
• MPLS References
• MPLS Label Switching and Packet Forwarding Overview
• TTL Processing in the Platform Label Space Overview
• MPLS Label Distribution Methodology
• IP Data Packet Mapping onto MPLS LSPs Overview
• Statistics for IP Packets Moving On or Off MPLS LSPs
• MPLS Forwarding and Next-Hop Tables Overview
• MPLS Packet Spoof Checking Overview
• IP and IPv6 Tunnel Routing Tables and MPLS Tunnels Overview
• Explicit Routing for MPLS Overview
• MPLS Interfaces and Interface Stacking Overview
• MPLS Label Distribution Protocols Overview
• ECMP Labels for MPLS Overview
• MPLS Connectivity Verification and Troubleshooting Methods
• Point-to-Multipoint LSPs Connectivity Verification at Egress Nodes Overview
• Ping Extensions for Point-to-Multipoint LSPs Connectivity Verification at Egress Nodes
• TLVs and Sub-TLVs Supported for Point-to-Multipoint LSPs Connectivity Verification at Egress Nodes
• LDP Discovery Mechanisms
• MPLS Traffic Engineering Overview
• Tracking Resources for MPLS Traffic Engineering Overview
• Topology-Driven LSPs Overview
• LDP Graceful Restart Overview
• LDP-IGP Synchronization Overview
• Use of RSVP-TE Hello Messages to Determine Peer Reachability
• RSVP-TE Graceful Restart Overview
• RSVP-TE Hellos Based on Node IDs Overview
• BFD Protocol and RSVP-TE Overview
• Tunneling Model for Differentiated Services Overview
• EXP Bits for Differentiated Services Overview
• Point-to-Multipoint LSPs Overview