H3C SR8800 10G Manuel utilisateur

H3C SR8800 10G Core Routers

MPLS Configuration Guide

Hangzhou H3C Technologies Co., Ltd.

http://www.h3c.com

Software version: SR8800-CMW520-R3347

Document version: 6W103-20120224

No part of this manual may be reproduced or transmitted in any form or by any means without prior

written consent of Hangzhou H3C Technologies Co., Ltd.

Trademarks

H3C, , Aolynk, , H3Care, , TOP G, , IRF, NetPilot, Neocean, NeoVTL,

SecPro, SecPoint, SecEngine, SecPath, Comware, Secware, Storware, NQA, VVG, V2G, VnG, PSPT,

XGbus, N-Bus, TiGem, InnoVision and HUASAN are trademarks of Hangzhou H3C Technologies Co.,

Ltd.

All other trademarks that may be mentioned in this manual are the property of their respective owners

Notice

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute the warranty of any kind, express or implied.

Preface

The H3C SR8800 documentation set includes 13 configuration guides, which describe the software

features for the H3C SR8800 10G Core Routers and guide you through the software configuration

procedures. These configuration guides also provide configuration examples to help you apply software

features to different network scenarios.

The MPLS Configuration Guide describes fundamentals and configuration of MPLS basics, MPLS TE, VPLS,

MPLS L2VPN, and MPLS L3VPN.

This preface includes:

•Audience

•Conventions

•About the H3C SR8800 documentation set

•Obtaining documentation

•Technical support

•Documentation feedback

Audience

This documentation is intended for:

•Network planners

•Field technical support and servicing engineers

•Network administrators working with the SR8800 series

Conventions

This section describes the conventions used in this documentation set.

Command conventions

Convention Descri

p

tion

Boldface Bold text represents commands and keywords that you enter literally as shown.

Italic Italic text represents arguments that you replace with actual values.

[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.

{ x | y | ... }

Braces enclose a set of required syntax choices separated by vertical bars, from which

you select one.

[ x | y | ... ]

Square brackets enclose a set of optional syntax choices separated by vertical bars, from

which you select one or none.

{ x | y | ... } *

Asterisk marked braces enclose a set of required syntax choices separated by vertical

bars, from which you select at least one.

[ x | y | ... ] *

Asterisk marked square brackets enclose optional syntax choices separated by vertical

bars, from which you select one choice, multiple choices, or none.

Convention Descri

p

tion

&<1-n> The argument or keyword and argument combination before the ampersand (&) sign can

be entered 1 to n times.

# A line that starts with a pound (#) sign is comments.

GUI conventions

Convention Descri

p

tion

Boldface Window names, button names, field names, and menu items are in Boldface. For

example, the New User window appears; click OK.

> Multi-level menus are separated by angle brackets. For example, File > Create > Folder.

Symbols

Convention Descri

p

tion

WARNING An alert that calls attention to important information that if not understood or followed can

result in personal injury.

CAUTION An alert that calls attention to important information that if not understood or followed can

result in data loss, data corruption, or damage to hardware or software.

IMPORTANT An alert that calls attention to essential information.

NOTE An alert that contains additional or supplementary information.

TIP An alert that provides helpful information.

Network topology icons

Represents a generic network device, such as a router, switch, or firewall.

Represents a routing-capable device, such as a router or Layer 3 switch.

Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that supports

Layer 2 forwarding and other Layer 2 features.

Port numbering in examples

The port numbers in this document are for illustration only and might be unavailable on your router.

About the H3C SR8800 documentation set

The H3C SR8800 documentation set includes:

Cate

g

or

y

Documents

Pur

p

oses

Product description and

specifications

Marketing brochures Describe product specifications and benefits.

Technology white papers

Provide an in-depth description of software features

and technologies.

Card datasheets Describe card specifications, features, and standards.

Cate

g

or

y

Documents

Pur

p

oses

Hardware specifications

and installation

Compliance and safety

manual

Provides regulatory information and the safety

instructions that must be followed during installation.

Installation guide Provides a complete guide to hardware installation

and hardware specifications.

H3C N68 Cabinet

Installation and Remodel

Introduction

Guides you through installing and remodeling H3C

N68 cabinets.

H3C Pluggable SFP

[SFP+][XFP] Transceiver

Modules Installation

Guide

Guides you through installing SFP/SFP+/XFP

transceiver modules.

H3C High-End Network

Products Hot-Swappable

Module Manual

Describes the hot-swappable modules available for

the H3C high-end network products, their external

views, and specifications.

Software configuration Configuration guides Describe software features and configuration

procedures.

Command references Provide a quick reference to all available commands.

Operations and

maintenance Release notes

Provide information about the product release,

including the version history, hardware and software

compatibility matrix, version upgrade information,

technical support information, and software

upgrading.

Obtaining documentation

You can access the most up-to-date H3C product documentation on the World Wide Web

at http://www.h3c.com.

Click the links on the top navigation bar to obtain different categories of product documentation:

[Technical Support & Documents > Technical Documents] – Provides hardware installation, software

upgrading, and software feature configuration and maintenance documentation.

[Products & Solutions] – Provides information about products and technologies, as well as solutions.

[Technical Support & Documents > Software Download] – Provides the documentation released with the

software version.

Technical support

servi[email protected]

http://www.h3c.com

Documentation feedback

You can e-mail your comments about product documentation to [email protected].

We appreciate your comments.

i

Contents

Configuring basic MPLS ·············································································································································· 1

MPLS overview ··································································································································································1

Basic concepts ··························································································································································1

Structure of the MPLS network·································································································································3

LSP establishment and label distribution ················································································································3

MPLS forwarding ······················································································································································6

LDP ·············································································································································································8

Protocols ····································································································································································9

MPLS configuration task list··········································································································································· 10

Enabling the MPLS function··········································································································································· 11

Configuration prerequisites ·································································································································· 11

Configuration procedure ······································································································································ 11

Configuring a static LSP ················································································································································ 11

Configuration prerequisites ·································································································································· 11

Configuration procedure ······································································································································ 12

Establishing dynamic LSPs through LDP······················································································································· 12

Configuring MPLS LDP capability ························································································································ 12

Configuring Local LDP session parameters········································································································· 13

Configuring remote LDP session parameters ······································································································ 14

Configuring PHP ···················································································································································· 15

Configuring the policy for triggering LSP establishment ··················································································· 16

Configuring the label distribution control mode ································································································ 16

Configuring LDP loop detection ··························································································································· 17

Configuring LDP MD5 authentication·················································································································· 18

Configuring LDP label filtering ····························································································································· 18

Maintaining LDP sessions ·············································································································································· 20

Configuring BFD for MPLS LDP ···························································································································· 20

Resetting LDP sessions··········································································································································· 20

Managing and optimizing MPLS forwarding ············································································································· 21

Configuring MPLS MTU ········································································································································ 21

Configuring TTL processing mode at ingress······································································································ 21

Sending back ICMP TTL exceeded messages for MPLS TTL expired packets ················································· 23

Configuring LDP GR ·············································································································································· 24

Configuring MPLS statistics ··········································································································································· 26

Setting the interval for reading statistics ············································································································· 26

Inspecting LSPs ······························································································································································· 26

MPLS LSP ping ······················································································································································· 26

MPLS LSP tracert ···················································································································································· 27

Configuring BFD for LSPs······································································································································ 27

Configuring periodic LSP tracert·························································································································· 28

Enabling MPLS trap························································································································································ 29

Displaying and maintaining MPLS ······························································································································· 29

Displaying MPLS operation ·································································································································· 29

Displaying MPLS LDP operation··························································································································· 30

Clearing MPLS statistics ········································································································································ 31

MPLS configuration examples······································································································································· 32

Configuring static LSPs·········································································································································· 32

Configuring LDP to establish LSPs dynamically·································································································· 34

Configuring BFD for LSP validity check··············································································································· 38

ii

MPLS TE configuration ···············································································································································41

MPLS TE overview ·························································································································································· 41

Traffic engineering and MPLS TE························································································································· 41

Basic concepts of MPLS TE ··································································································································· 42

MPLS TE implementation······································································································································· 42

CR-LSP····································································································································································· 43

CR-LDP ···································································································································································· 44

RSVP-TE··································································································································································· 44

Traffic forwarding·················································································································································· 48

CR-LSP backup ······················································································································································· 50

FRR ·········································································································································································· 50

PS for an MPLS TE tunnel······································································································································ 51

DiffServ-aware TE ·················································································································································· 52

MPLS LDP over MPLS TE ······································································································································· 54

Protocols and standards ······································································································································· 55

MPLS TE configuration task list ····································································································································· 55

Configuring MPLS TE basic capabilities ······················································································································ 56

Configuration prerequisites ·································································································································· 56

Configuration procedure ······································································································································ 56

Configuring DiffServ-aware TE ····································································································································· 57

Creating MPLS TE tunnel over static CR-LSP ················································································································ 58

Configuration prerequisites ·································································································································· 58

Configuration procedure ······································································································································ 58

Configuring MPLS TE tunnel with dynamic signaling protocol·················································································· 59

Configuration prerequisites ·································································································································· 60

Configuration procedure ······································································································································ 60

Configuring RSVP-TE advanced features ····················································································································· 65

Configuration prerequisites ·································································································································· 65

Configuration procedure ······································································································································ 65

Tuning CR-LSP setup······················································································································································· 69

Configuration prerequisites ·································································································································· 69

Configuration procedure ······································································································································ 69

Tuning MPLS TE tunnel setup········································································································································· 71

Configuration prerequisites ·································································································································· 72

Configuration procedures····································································································································· 72

Configuring traffic forwarding······································································································································ 73

Configuration prerequisites ·································································································································· 73

Configuration procedures····································································································································· 73

Configuring traffic forwarding tuning parameters······································································································ 75

Configuration prerequisites ·································································································································· 76

Configuration procedure ······································································································································ 76

Configuring CR-LSP backup ·········································································································································· 77

Configuration prerequisites ·································································································································· 78

Configuration procedure ······································································································································ 78

Configuring FRR ····························································································································································· 78

Configuration prerequisites ·································································································································· 79

Configuration procedure ······································································································································ 79

Inspecting an MPLS TE tunnel ······································································································································· 81

Configuring MPLS LSP ping·································································································································· 81

Configuring MPLS LSP tracert······························································································································· 81

Configuring BFD for an MPLS TE tunnel·············································································································· 82

Configuring periodic LSP tracert for an MPLS TE tunnel ··················································································· 83

Configuring protection switching ································································································································· 84

Configuration prerequisites ·································································································································· 84

iii

Configuration procedure ······································································································································ 84

Displaying and maintaining MPLS TE ·························································································································· 84

MPLS TE configuration examples·································································································································· 87

MPLS TE using static CR-LSP configuration example·························································································· 87

MPLS TE tunnel using RSVP-TE configuration example······················································································ 91

Configuration example of inter-AS MPLS TE tunnel using RSVP-TE·································································· 98

RSVP-TE GR configuration example···················································································································105

MPLS RSVP-TE and BFD cooperation configuration example·········································································107

MPLS TE using CR-LDP configuration example·································································································109

CR-LSP backup configuration example ·············································································································117

FRR configuration example·································································································································120

IETF DS-TE configuration example ·····················································································································129

MPLS LDP over MPLS TE configuration example······························································································136

MPLS TE in MPLS L3VPN configuration example·····························································································143

Troubleshooting MPLS TE ············································································································································151

No TE LSA generated ·········································································································································151

Swicthback fails to occur when the main tunnel resumes ···············································································151

Configuring VPLS ···················································································································································· 153

VPLS overview ······························································································································································153

Operation of VPLS···············································································································································153

VPLS packet encapsulation·································································································································156

H-VPLS implementation ·······································································································································157

Hub-spoke VPLS implementation························································································································159

Multi-hop PW·······················································································································································160

VPLS configuration task list··········································································································································161

Configuring LDP VPLS ··················································································································································162

Configuration prerequisites ································································································································162

Enabling L2VPN and MPLS L2VPN ···················································································································162

Configuring an LDP VPLS instance·····················································································································162

Configuring BGP VPLS·················································································································································164

Configuration prerequisites ································································································································164

Configuring the BGP extension··························································································································164

Enabling L2VPN and MPLS L2VPN ···················································································································164

Configuring a BGP VPLS instance ·····················································································································165

Resetting VPLS BGP connections························································································································165

Binding a VPLS instance··············································································································································165

Configuring MAC address learning···························································································································167

Configuring VPLS attributes·········································································································································168

Displaying and maintaining VPLS ······························································································································168

VPLS configuration examples······································································································································169

Configuring VPLS instances································································································································169

Configuring H-VPLS with LSP access ·················································································································172

Configuring hub-spoke VPLS ······························································································································175

Configuring PW redundancy for H-VPLS access······························································································179

Implementing multi-AS VPN through multi-hop PW ·························································································183

Troubleshooting VPLS···················································································································································187

Configuring MPLS L2VPN······································································································································· 189

MPLS L2VPN overview ················································································································································189

Basic concepts of MPLS L2VPN ·························································································································190

Implementation of MPLS L2VPN·························································································································190

MPLS L2VPN configuration task list····························································································································192

Configuring MPLS L2VPN ···········································································································································193

Configuring CCC MPLS L2VPN··································································································································193

iv

Configuration prerequisites ································································································································193

Configuration procedure ····································································································································193

Configuring SVC MPLS L2VPN···································································································································195

Configuration prerequisites ································································································································195

Configuration procedure ····································································································································195

Configuring Martini MPLS L2VPN ······························································································································196

Creating a Martini MPLS L2VPN connection on a Layer 3 Ethernet interface/sub-interface······················196

Creating a Martini MPLS L2VPN for a service instance··················································································197

Configuring Kompella MPLS L2VPN ··························································································································199

Configuration prerequisites ································································································································200

Configuration procedure ····································································································································200

Enabling the MPLS L2VPN mix function·····················································································································202

Displaying and maintaining MPLS L2VPN ················································································································203

Displaying the operation of MPLS L2VPN ········································································································203

Resetting BGP L2VPN connections ····················································································································204

MPLS L2VPN configuration examples························································································································204

Example for configuring a local CCC connection···························································································204

Example for configuring a remote CCC connection ·······················································································206

Example for configuring SVC MPLS L2VPN ·····································································································209

Example for configuring Martini MPLS L2VPN ································································································213

Example for configuring Kompella MPLS L2VPN·····························································································217

Example for configuring a Kompella local connection ···················································································219

Troubleshooting MPLS L2VPN·····································································································································221

Configuring MPLS L3VPN······································································································································· 222

MPLS L3VPN overview ················································································································································222

MPLS L3VPN concepts ········································································································································223

MPLS L3VPN packet forwarding························································································································225

MPLS L3VPN networking schemes·····················································································································226

MPLS L3VPN routing information advertisement······························································································229

Inter-AS VPN ························································································································································230

Carrier’s carrier ···················································································································································233

Nested VPN ·························································································································································235

Multi-role host·······················································································································································237

HoVPN··································································································································································237

OSPF VPN extension···········································································································································239

BGP AS number substitution·······························································································································242

Multi-VPN-instance CE ········································································································································243

MPLS L3VPN configuration task list····························································································································244

Configuring basic MPLS L3VPN ·································································································································245

Configuration prerequisites ································································································································245

Configuring VPN instances ································································································································245

Configuring routing between PE and CE··········································································································248

Configuring routing between PEs ······················································································································254

Configuring routing features for BGP VPNv4 subaddress family ··································································254

Configuring inter-AS VPN ···········································································································································257

Configuration prerequisites ································································································································257

Configuring inter-AS option A····························································································································258

Configuring inter-AS option B ····························································································································258

Configuring inter-AS option C····························································································································259

Configuring nested VPN··············································································································································261

Configuration prerequisites ································································································································261

Configuring nested VPN·····································································································································261

Configuring multi-role host ··········································································································································262

Configuration prerequisites ································································································································262

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Configuring and applying policy routing ·········································································································262

Configuring a static route···································································································································263

Configuring HoVPN·····················································································································································263

Configuration prerequisites ································································································································263

Configuring HoVPN ············································································································································263

Configuring an OSPF sham link ·································································································································264

Configuration prerequisites ································································································································264

Configuring a loopback interface ·····················································································································264

Redistributing the loopback interface route and OSPF routes into BGP························································265

Creating a sham link···········································································································································265

Configuring routing on an MCE·································································································································266

Configuration prerequisites ································································································································266

Configuring routing between MCE and VPN site····························································································266

Configuring routing between MCE and PE ······································································································271

Specifying the VPN label processing mode··············································································································275

Configuring BGP AS number substitution··················································································································276

Configuration prerequisites ································································································································276

Configuration procedure ····································································································································276

Displaying and maintaining MPLS L3VPN ················································································································276

Resetting BGP connections ·································································································································276

Displaying and maintaining MPLS L3VPN········································································································277

MPLS L3VPN configuration examples························································································································280

Configuring MPLS L3VPNs using EBGP between PE and CE·········································································280

Configuring MPLS L3VPNs using IBGP between PE and CE ··········································································287

Configuring an MPLS L3VPN that uses a GRE tunnel······················································································295

Configuring inter-AS option A····························································································································300

Configuring inter-AS option B ····························································································································305

Configuring inter-AS option C····························································································································310

Configuring carrier’s carrier ······························································································································316

Configuring nested VPN·····································································································································324

Configuring HoVPN ············································································································································333

Configuring OSPF sham links ····························································································································340

Configuring BGP AS number substitution ·········································································································345

Configuring IPv6 MPLS L3VPN ······························································································································ 349

IPv6 MPLS L3VPN overview ········································································································································349

IPv6 MPLS L3VPN packet forwarding ···············································································································350

IPv6 MPLS L3VPN routing information advertisement ·····················································································350

IPv6 MPLS L3VPN networking schemes and functions ····················································································351

IPv6 MPLS L3VPN configuration task list ···················································································································351

Configuring basic IPv6 MPLS L3VPN·························································································································351

Basic IPv6 MPLS L3VPN configuration task list ································································································351

Configuration prerequisites ································································································································352

Configuring VPN instances ································································································································352

Configuring route related attributes for a VPN instance·················································································353

Configuring routing between PE and CE··········································································································355

Configuring routing between PEs ······················································································································358

Configuring routing features for the BGP-VPNv6 subaddress family·····························································359

Configuring inter-AS IPv6 VPN···································································································································360

Configuration prerequisites ································································································································360

Configuring inter-AS IPv6 VPN option A ··········································································································361

Configuring inter-AS IPv6 VPN option C ··········································································································361

Configuring routing on an MCE·································································································································362

Configuration prerequisites ································································································································362

Configuring routing between MCE and VPN site····························································································362

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