Table of Contents Preface About This Guide Getting Started In This Chapter Alcatel-Lucent Router Configuration Process Alcatel-Lucent, 7750 SR OS, MPLS Guide, MPLS and RSVP In This Chapter MPLS MPLS Label Stack Label Values Label Switching Routers LSP Types MPLS Facility Bypass Method of MPLS Fast Re-Route (FRR) Manual Bypass LSP Uniform FRR Failover Time Automatic Bandwidth Allocation for RSVP LSPs MPLS Transport Profile (MPLS-TP) MPLS-TP Model MPLS-TP Provider Edge and Gateway VLL Services Detailed Descriptions of MPLS-TP MPLS-TP LSPs MPLS-TP on Pseudowires MPLS-TP Maintenance Identifiers Generic Associated Channel MPLS-TP Operations, Administration and Maintenance (OAM) PW Control Channel Status Notifications (Static Pseudowire Status Signaling) PW Control Channel Status Request Mechanism Pseudowire Redundancy and Active / Standby Dual Homing MPLS-TP LSP Protection Configuring MPLS-TP Configuration Overview Node-Wide MPLS-TP Parameter Configuration Node-Wide MPLS-TP Identifier Configuration Static LSP and pseudowire (VC) Label and Tunnel Ranges Interface Configuration for MPLS-TP LER Configuration for MPLS-TP Intermediate LSR Configuration for MPLS-TP LSPs RSVP Using RSVP for MPLS RSVP Traffic Engineering Extensions for MPLS Reservation Styles RSVP Message Pacing RSVP Overhead Refresh Reduction RSVP Graceful Restart Helper Enhancements to RSVP control plane congestion control RSVP LSP Statistics Configuring Implicit Null Using Unnumbered Point-to-Point Interface in RSVP Operation of RSVP FRR Facility Backup over Unnumbered Interface Traffic Engineering TE Metric (IS-IS and OSPF) Admin Group Support on Facility Bypass Backup LSP Procedures at Head-End Node Procedures at PLR Node Diff-Serv Traffic Engineering Mapping of Traffic to a Diff-Serv LSP Admission Control of Classes RSVP Control Plane Extensions IGP Extensions Diff-Serv TE Configuration and Operation Diff-Serv TE LSP Class Type Change under Failure LSP Primary Path Retry Procedures Bandwidth Sharing Across Class Types Downgrading the CT of Bandwidth Sharing LSP Paths Upgrading the CT of Bandwidth Sharing LSP Paths Advanced MPLS/RSVP Features Extending RSVP LSP to use Loopback Interfaces Other Than router-id LSP Path Change Manual LSP Path Switch Make-Before-Break (MBB) Procedures for LSP/Path Parameter Configuration Change Automatic Creation of RSVP-TE LSP Mesh RSVP-TE LSP Shortcut for IGP Resolution Using LSP Relative Metric with IGP Shortcut ECMP Considerations Handling of Control Packets Forwarding Adjacency LDP Forwarding over IGP Shortcut Handling of Multicast Packets RSVP-TE LSP Signaling using LSP Template Shared Risk Link Groups Enabling Disjoint Backup Paths Static Configurations of SRLG Memberships TE Graceful Shutdown Soft Pre-emption of Diff-Serv RSVP LSP Least-Fill Bandwidth Rule in CSPF ECMP Selection Inter Area TE LSP (ERO Expansion Method) Area Border Node FRR Protection for Inter Area LSP Inter-Area LSP support of OSPF Virtual Links Area Border Node FRR Protection for Inter Area LSP Automatic Creation of a RSVP Mesh LSP Feature Configuration Feature Behavior Multi-Area and Multi-Instance Support Mesh LSP Name Encoding and Statistics Automatic Creation of a RSVP One-Hop LSPs Feature Configuration Feature Behavior Multi-Area and Multi-Instance Support Mesh LSP Name Encoding and Statistics Automatic Creation of a RSVP One-Hop LSP Feature Configuration Feature Behavior Point-to-Multipoint (P2MP) RSVP LSP Application in Video Broadcast P2MP LSP Data Plane Procedures at Ingress LER Node Procedures at LSR Node Procedures at Branch LSR Node Procedures at Egress LER Node Procedures at BUD LSR Node Ingress Path Management for P2MP LSP Packets Ingress P2MP Path Management on IOM-3 Ingress P2MP Path Management on IOM-2 RSVP Control Plane in a P2MP LSP Forwarding Multicast Packets over RSVP P2MP LSP in the Base Router Procedures at Ingress LER Node Procedures at Egress LER Node MPLS Service Usage Service Distribution Paths MPLS/RSVP Configuration Process Overview Configuration Notes Alcatel-Lucent, 7750 SR OS, MPLS Guide, Configuring MPLS and RSVP with CLI MPLS Configuration Overview LSPs Paths Router Interface Choosing the Signaling Protocol Basic MPLS Configuration Common Configuration Tasks Configuring MPLS Components Configuring Global MPLS Parameters Configuring an MPLS Interface Configuring MPLS Paths Configuring an MPLS LSP Configuring a Static LSP Configuring Manual Bypass Tunnels Configuring RSVP Parameters Configuring RSVP Message Pacing Parameters Configuring Graceful Shutdown MPLS Configuration Management Tasks Deleting MPLS Modifying MPLS Parameters Modifying an MPLS LSP Modifying MPLS Path Parameters Modifying MPLS Static LSP Parameters Deleting an MPLS Interface RSVP Configuration Management Tasks Modifying RSVP Parameters Modifying RSVP Message Pacing Parameters Deleting an Interface from RSVP Alcatel-Lucent, 7750 SR OS, MPLS Guide, MPLS/RSVP Command Reference Command Hierarchies MPLS Commands MPLS-TP Commands LSP Commands MPLS Path Commands RSVP Commands Show Commands Tools Commands Router Commands Clear Commands Debug Commands 0 0 0 0 0 0 0 0 Alcatel-Lucent, 7750 SR OS, MPLS Guide, Label Distribution Protocol In This Chapter Label Distribution Protocol LDP and MPLS LDP Architecture Subsystem Interrelationships Memory Manager and LDP Label Manager LDP Configuration Logger Service Manager Execution Flow Initialization Session Lifetime Label Exchange Other Reasons for Label Actions Cleanup Configuring Implicit Null Label Global LDP Filters Per LDP Peer FEC Import and Export Policies Configuring Multiple LDP LSR ID T-LDP hello reduction Tracking a T-LDP Peer with BFD Tracking a Link LDP Peer with BFD LDP LSP Statistics TTL Security for BGP and LDP ECMP Support for LDP Label Operations Unnumbered Interface Support in LDP Feature Configuration Operation of LDP over an Unnumbered IP Interface Link LDP Targeted LDP FEC Resolution LDP over RSVP Tunnels LDP over RSVP Without Area Boundary LDP over RSVP and ECMP LDP Fast-Reroute for IS-IS and OSPF Prefixes LDP FRR Configuration LDP FRR Procedures IS-IS and OSPF Support for Loop-Free Alternate Calculation mLDP Fast Upstream Switchover LDP FEC to BGP Label Route Stitching Configuration Detailed LDP FEC Resolution Detailed BGP Labeled Route Resolution Data Plane Forwarding Automatic Creation of a Targeted Hello Adjacency and LDP Session Feature Configuration Feature Behavior Multicast P2MP LDP for GRT LDP P2MP Support LDP P2MP Configuration LDP P2MP Protocol Make Before Break (MBB) ECMP Support Multicast LDP Fast Upstream Switchover Feature Configuration Feature Behavior Uniform Failover from Primary to Backup ILM Multi-Area and Multi-Instance Extensions to LDP LDP Shortcut for BGP Next-Hop Resolution LDP Shortcut for IGP Routes ECMP Considerations Disabling TTL Propagation in an LSP Shortcut LDP Graceful Handling of Resource Exhaustion LDP Base Graceful Handling of Resources LDP Enhanced Graceful Handling of Resources LSR Overload Notification LSR Overload Protection Capability Procedures for LSR overload protection User Guidelines and Troubleshooting Procedures Common Procedures Base Resource Handling Procedures Enhanced Resource Handling Procedures LDP Process Overview Alcatel-Lucent, 7750 SR OS, MPLS Guide, Configuring LDP with CLI LDP Configuration Overview Basic LDP Configuration Common Configuration Tasks Enabling LDP Configuring FEC Originate Parameters Configuring Graceful-Restart Helper Parameters Applying Export and Import Policies Targeted Session Parameters Interface Parameters Peer Parameters LDP Signaling and Services LDP Configuration Management Tasks Disabling LDP Modifying Targeted Session Parameters Modifying Interface Parameters Alcatel-Lucent, 7750 SR OS, MPLS Guide, LDP Command Reference Command Hierarchies LDP Commands Show Commands Clear Commands Debug Commands Tools Commands
