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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
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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