Cisco Systems IOS XR manuals

Cisco systems IOS XR User Manual (282 pages)

Brand: Cisco-systems | Category: Networking | Size: 2.84 MB |

English

Table of contents

Text Part Number: OL-5554-05

1

CONTENTS

3

Contents

10

Preface

11

Obtaining Documentation

12

Documentation Feedback

13

Submitting a Service Request

15

BGP Functional Overview

18

BGP Router Identifier

19

BGP Default Limits

19

BGP Configuration

20

Neighbor Submode

21

Configuration Templates

22

Template Inheritance Rules

23

Template Inheritance

27

No Default Address Family

31

Routing Policy Enforcement

32

Update Groups

34

BGP Best Path Algorithm

34

Comparing Pairs of Paths

35

Order of Comparisons

36

Multiprotocol BGP

37

Route Dampening

39

BGP Route Reflectors

40

Enabling BGP Routing

44

Logging Neighbor Changes

50

Adjusting BGP Timers

50

Configuring BGP Weights

54

Configuring a BGP Neighbor

74

Disabling a BGP Neighbor

85

Monitoring BGP Update Groups

91

BGP Confederation: Example

94

IS-IS Functional Overview

101

IS-IS Configuration Grouping

101

IS-IS Interfaces

102

Multitopology Configuration

102

Limit LSP Flooding

102

Single-Topology IPv6 Support

103

Nonstop Forwarding

104

Multitopology IPv6 Support

104

Multi-Instance IS-IS

105

Overload Bit on Router

105

Default Routes

106

Multicast-Intact Feature

106

Prerequisites

107

DETAILED STEPS

108

Restrictions

109

SUMMARY STEPS

110

Example:

113

Example::

117

Prerequisite

126

Summary Steps

134

Customizing Routes for IS-IS

135

Software

138

Where to Go Next

140

Additional References

140

Technical Assistance

141

OSPF Functional Overview

145

OSPF Routing Components

148

Backbone Area

149

Stub Area

149

Not-so-Stubby Area (NSSA)

149

OSPF Process and Router ID

150

Supported OSPF Network Types

151

Authentication Strategies

152

Key Rollover

152

Default Route for OSPF

153

Route Redistribution for OSPF

155

Graceful Restart for OSPFv3

157

Restart Mode

158

Enabling OSPF

161

Examples

180

address mask

185

Enabling Graceful Restart

198

ABR 1 Configuration

207

ABR 2 Configuration

207

Cisco IOS XR Software

211

Overview of RIB

212

RIB Administrative Distance

213

RIB Support for IPv4 and IPv6

213

How to Deploy and Monitor RIB

214

Routing Policy Language

222

Named Set Form

224

Inline Set Form

224

Named Form

225

Inline Form

226

Routing Policy Language Usage

227

Set community based on MED

228

Policy Definitions

229

Parameterization

230

Boolean Operator Precedence

231

When Attributes Are Modified

232

Default Drop Disposition

233

Control Flow

233

Policy Verification

234

Policy Statements

235

Disposition

236

Boolean Conditions

238

Attach Points

239

BGP Policy Attach Points

240

Dampening

241

Default Originate

241

Neighbor Export

242

Neighbor Import

242

Redistribute

243

Show bgp

244

Table Policy

245

BGP Attributes and Operators

245

OSPF Policy Attach Points

247

OSPFv3 Policy Attach Points

248

IS-IS Policy Attach Points

250

Attached Policy Modification

251

Defining a Route Policy

253

policy-name

256

Directly Connected Routes

265

Recursive Static Routes

265

Floating Static Routes

266

Configuring a Static Route

266

Configuration Examples

271

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