CONTENTS
Preface
Preface xvii
Changes to This Document xvii
Obtaining Documentation and Submitting a Service Request xvii
CHAPTER 1
New and Changed Feature Information in Cisco IOS XR Release 5.1.x 1
New and Changed Feature Information in Cisco IOS XR Release 5.1.x 1
CHAPTER 2
Implementing MPLS Label Distribution Protocol 5
Prerequisites for Implementing Cisco MPLS LDP 6
Information About Implementing Cisco MPLS LDP 7
Overview of Label Distribution Protocol 7
Label Switched Paths 7
LDP Control Plane 7
Exchanging Label Bindings 8
LDP Forwarding 9
LDP Graceful Restart 11
Control Plane Failure 11
Phases in Graceful Restart 12
Recovery with Graceful-Restart 14
Label Advertisement Control (Outbound Filtering) 15
Label Acceptance Control (Inbound Filtering) 15
Local Label Allocation Control 16
Session Protection 16
IGP Synchronization 17
IGP Auto-configuration 18
IGP Synchronization Process Restart Delay 18
LDP Nonstop Routing 19
Cisco IOS XR MPLS Configuration Guide for the Cisco CRS Router, Release 5.1.x
iii
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