Brocade Multi-Service IronWare Multiprotocol Label Switch manuels

Manuels d'utilisation et guides de l'utilisateur pour Accessoires pour ordinateurs Brocade Multi-Service IronWare Multiprotocol Label Switch .
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Table des matières

Multi-Service IronWare

1

Document History

2

Contents

3

53-1003031-02

10

Chapter 5 IP over MPLS

11

Chapter 7 Routing over VPLS

16

About This Document

19

Supported software

20

Document conventions

21

Notice to the reader

22

Related publications

22

In this chapter

23

Overview

25

How MPLS works

28

Types of LSPs

31

MPLS label header encoding

32

MPLS interfaces

36

Traffic engineering database

37

• The link is half duplex

38

Refresh messages

41

Admission control

42

Bandwidth allocation

42

LSP preemption

43

P2MP LSP mechanism

48

Prerequisites and limitations

49

Scalability limitations

49

Benefits of P2MP

50

Source-to-leaf sub-LSP

51

Grafting

52

RSVP soft preemption

53

Frequently used terms

54

Detailed command information

55

Display output

56

Show mpls lsp extensive

57

Show mpls rsvp session ppend

59

Show mpls interface

59

Scalability

60

Auto-bandwidth for RSVP LSPs

61

Template-based configuration

66

Setting the minimum bandwidth

67

Underflow-limit

68

• sample-recording

71

• underflow-limit

71

Field output Description

73

Finding a detour at a PLR

85

Failover sequence

86

Configuring a protected LSP

88

Configuring a bypass LSP

88

• The protected LSP

89

FIGURE 16 Adaptive bypass LSP

91

• bandwidth

94

• exclude-any

94

• facility-backup

94

Global Revertiveness

95

Deleting CSPF groups

101

node 10.7.7.3

102

node 10.7.7.8

102

MPLS CSPF fate-sharing group

106

Global configuration

107

Brocade(config-mpls-policy)#

109

Brocade(config)# router mpls

109

Brocade(config-mpls)# policy

109

MPLS enabled interface

110

VPLS CPU protection

111

Reverse path forwarding

112

Port mirroring

112

Protocol-based VLANs

113

Class of Service (CoS)

113

Configuring MPLS

114

• filter-inter-as-routes

119

• filter-intra-as-ibgp routes

119

• RSVP-signaled LSPs

124

• LDP signaled LSPs

124

Release Command history

126

FIGURE 18 Single-hop LSP

128

Global RSVP parameters

130

RSVP message authentication

131

RSVP reliable messaging

132

RSVP refresh reduction

133

RSVP IGP synchronization

135

Limitations

136

Show command output

137

Enhanced show commands

138

Show mpls rsvp igp-sync

138

Show mpls rsvp igp-sync lsp

140

Show mpls lsp

142

Setting up signaled LSPs

148

Setting up paths

149

Modifying a path

150

Deleting a path

150

Creating an LSP

152

Specifying the egress LER

152

Configuring path selection

155

Assigning a metric to the LSP

159

LDP tunnel metric

161

FRR bypass LSPs

163

Resetting LSPs

164

Resetting Bypass LSPs

164

Link protection for FRR

166

FIGURE 22 Node protection

167

Command Section

168

Output field Description

170

Release Command history

172

Configuring an adaptive LSP

173

Reoptimizing LSPs

174

Static transit LSP

175

Configuration example

176

Functional Considerations

177

Configuration commands

177

Static-lsp transit

177

In-label

178

Next-hop

178

Out-label

178

Show Commands

180

Show mpls label-range

181

Show mpls summary

182

Show mpls forwarding

183

Show mpls config

183

Show run

184

Syslog message display output

184

Specifying a bypass LSP

188

Reoptimizing a bypass LSP

189

Dynamic Bypass LSPs

191

Bypass LSP terminology

192

Configuration considerations

194

Creating a dynamic bypass LSP

195

Configuration steps

197

Network diagram

197

Enabling all interfaces

198

Setting the reoptimizer-timer

200

Specifying the name prefix

201

Setting the priority

201

Configuring non-adaptive LSPs

202

Setting the reoptimize timer

203

Show commands

203

Sample configurations

207

Supported scenarios

207

RSVP LSP with FRR

214

FIGURE 39

220

Backward compatibility

221

Commands

222

Related

226

IP Traceroute over MPLS

228

Standard traceroute

229

Configuration examples

235

MPLS LDP-IGP synchronization

239

• Hold down time

244

• The normal IP metric

245

This Field... Displays

248

Displaying MPLS statistics

249

This field... Displays

250

LSP test1

254

LSP test2

254

Example

257

CLI parameter Description

260

• manual

264

• unconditional

264

Displaying path information

266

This column... Displays

267

• [e

268

Displaying RSVP information

270

Displaying the RSVP version

271

Field Description

272

• Time stamp

276

Displaying RSVP statistics

279

Displaying in the brief mode

287

Displaying in the detail mode

288

Transit LSP statistics

291

Clearing MPLS statistics

294

Clearing MPLS RSVP sessions

295

MPLS sample configurations

296

LSP with redundant paths

296

Router R1

297

Router R2

297

Router R3

298

Examples of MPLS bypass LSP

307

• Bypass LSP xmr1-by is up

312

Syntax: show mpls lsp name

313

LDP overview

319

LDP Inbound-FEC filtering

323

Displaying FEC information

324

Syntax: show mpls ldp

325

TABLE 41

326

Example:

327

TABLE 42

328

Sample Configurations

329

LDP outbound FEC filtering

331

Command output Description

335

Label withdrawal delay

350

Upgrade to R05.5.00

351

Downgrade from R05.5.00

351

LDP ECMP for transit LSR

353

MPLS OAM support for LDP ECMP

355

LDP ECMP LER

357

• L – LDP

363

• R – RSVP

363

Brocade(config-mpls)# ldp

370

LDP message authentication

373

Resetting LDP neighbors

374

LDP Graceful Restart (GR)

384

Graceful restart procedure

385

Graceful restart scenarios

387

LDP ECMP (transit only)

388

LDP over RSVP (transit only)

388

LDP over GRE (transit only)

388

LDP GR configuration examples

389

Setting the keepalive timeout

390

Background

392

Enabling LDP over RSVP

395

Enabling TTL propagation

399

RSVP-TE Hello

400

• Hello Message

401

• Hello REQUEST object

401

• Hello ACK object

401

Risk assessment

402

TABLE 46

405

Field name Description

409

Description

415

Field Description

418

P2MP Capable : Yes

419

Displaying LDP information

424

• Targeted

431

Sample LDP configurations

447

MPLS over GRE tunnel

451

LDP LSP over GRE tunnel

452

LDP VPLS over a GRE tunnel

453

Router B configuration

456

Router C configuration

456

Router D configuration

457

•lsr-id A.B.C.D

460

•show mpls ldp

460

•show mpls ldp fec prefix

460

Release Modification

463

Release Command History

464

How VPLS works

474

Configuring VPLS instances

477

Creating a VPLS instance

478

Specifying VPLS peers

481

Setting the VPLS VC mode

482

VPLS raw pass through mode

483

VPLS tagged mode

488

QoS for VPLS traffic

490

LSP load balancing

493

VPLS LSP load balancing

494

TABLE 72

497

Specifying the VPLS VC type

503

Configuring VPLS tagged mode

504

Syntax: show mpls vpls detail

505

CPU packet limiting

509

Multicast traffic processing

509

Specifying a VPLS MTU

512

Special considerations

513

Enabling MPLS VPLS traps

514

VPLS extended counters

514

Local VPLS

517

CoS behavior for Local VPLS

518

Displaying VPLS information

520

VPLS LDP

535

MTU mismatched

536

No remote VC label

536

LDP session down

537

No local label resource

537

MPLS LDP show commands

538

Issues with timers

539

Solution

539

Scaling support

540

How MPLS VLL works

549

MPLS VLL packet encoding

550

QoS for VLL traffic

551

Tag Mode

555

Outgoing Packet

555

Raw Mode

555

Configuring MPLS VLLs

557

Brocade(config-mpls-vll)#

558

Specifying a VLL peer

559

Specifying a VLL endpoint

559

Specifying a VLL MTU

565

Generating traps for VLLs

565

VLL extended counters

567

Layer 2 ACLs

571

Sample MPLS VLL configuration

579

Local VLL

582

Local VLL QoS

586

CoS behavior for Local VLL

587

Configuring Local VLL

588

Local VLL extended counters

591

VLL raw-pass-through overview

598

Packet handling behavior

599

Customer requirements

601

Related command Description

603

IP over MPLS

607

BGP shortcuts

608

Examples of next-hop MPLS

609

• Disabling next-hop MPLS

610

Specifying metrics

611

Enable BGP ECMP

611

Enable next-hop MPLS

612

Enable LSP-metric comparison

612

LDP route injection

614

LDP route injection example

615

BGP MPLS metric follow IGP

619

Feature information

620

Limitation

620

IS-IS shortcuts

621

The announce metric

622

The relative metric

622

Configuration notes

623

Configuration tasks

624

Example configurations

626

Clearing IS-IS shortcuts

628

Ignore LSP metric

629

Show command support

630

IP over MPLS statistics

634

Syntax: show mpls ldp traffic

635

Configuring BGP or MPLS VPNs

637

What is a BGP or MPLS VPN

639

BGP or MPLS VPNs

640

Draft standards

641

MIB support

641

BGP or MPLS VPN operation

642

Configuring BGP VPNs on a PE

644

Brocade(config)# vrf VPN1

645

Brocade(config)#

645

Brocade(config-vrf)# rd 3:6

645

ECMP forwarding for IP VPN

651

Setting up LSPs per VRF

653

Configuring OSPF sham links

654

Brocade# clear arp vrf blue

657

(default)

658

Brocade(config)# vrf blue

660

Ping VRF

661

Traceroute VRF

661

Generating traps for VRFs

662

BGP4 summary information

665

Displaying the best routes

680

BGP VPNv4 attribute entries

694

Displaying route details

715

Displaying VRF information

717

Displaying OSPF sham links

726

FIGURE 73 IBGP example

733

EBGP for route exchange

734

Brocade(config)# router bgp

735

EBGP to CE network example

736

CE 1 configuration

736

CE 5 configuration

736

PE 1 configuration

737

PE 4 configuration

738

Static route to CE example

740

RIP for route exchange

742

Brocade(config)# router rip

743

RIP to CE example

744

OSPF for route exchange

747

OSPF to CE example

749

Cooperative route filtering

752

OSPF sham links

757

PE 2 configuration

758

Glossary

764

Routing over VPLS

765

FIGURE 86 Routing over VPLS

766

FIGURE 87

766

Routing over VPLS components

767

Protocol Support

769

VE over VPLS sample topology

771

Configuration Considerations

772

Migration considerations

772

Configuring VE over VPLS

773

VRRP/VRRP-E support

774

Single homing topology

776

Dual homing topology

777

ACL Support for VE over VPLS

778

Configuration task See

786

Adding a loopback interface

787

Enabling VPLS auto-discovery

793

• All BGP4 neighbors

795

• A specific neighbor

795

• A specific peer group

795

Example configuration

796

• VPLS auto-discovered peers

799

Viewing neighbor connections

804

VPLS LSP Load Balancing

816

Feature overview

816

Assumptions and dependencies

817

CAM2PRAM Data Format

822

6PE over MPLS

823

6PE over MPLS operation

824

Configuring 6PE

826

CE1 configuration

828

6PE1 configuration

828

6PE2 configuration

829

CE2 configuration

829

Displaying 6PE information

830

Displaying the 6PE summary

838

Clearing 6PE information

841

CoS behavior for 6PE packets

842

6VPE Routing

843

Configuring 6VPE

844

FIGURE 97 6VPE with P router

845

CE-A1 Configuration

847

PE-1 Configuration

847

P- Configuration

848

PE-2 Configuration

849

Displaying 6VPE information

850





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