Cisco NCS 6000 Series User Manual

Implementing IP Fast Reroute Loop-Free Alternate 345
CHAPTER 8
Prerequisites for IPv4/IPv6 Loop-Free Alternate Fast Reroute 345
Restrictions for Loop-Free Alternate Fast Reroute 345
IS-IS and IP FRR 346
Repair Paths 346
LFA Overview 347
LFA Calculation 347
Interaction Between RIB and Routing Protocols 347
Configuring Fast Reroute Support 348
Configuring IPv4 Loop-Free Alternate Fast Reroute Support: Example 350
Additional References 350
Implementing and Monitoring RIB 353
CHAPTER 9
Prerequisites for Implementing RIB 353
Information About RIB Configuration 354
Overview of RIB 354
RIB Data Structures in BGP and Other Protocols 354
RIB Administrative Distance 354
RIB Support for IPv4 355
RIB Statistics 355
IP Fast Reroute 356
RIB Quarantining 356
Route and Label Consistency Checker 356
How to Deploy and Monitor RIB 357
Verifying RIB Configuration Using the Routing Table 357
Disabling RIB Next-hop Dampening 358
Configuring RCC and LCC 359
Enabling RCC and LCC Background Scan 359
Configuration Examples for RIB Monitoring 360
Output of show route Command: Example 360
Output of show route backup Command: Example 361
Output of show route best-local Command: Example 361
Output of show route connected Command: Example 361
Routing Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
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Contents

Cisco NCS 6000 Series Specifications

General

Brand	Cisco
Model	NCS 6000 Series
Category	Network Router
Language	English