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Brocade Virtual ADX Server Load Balancing Guide (Supportin manuali

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Brocade Virtual ADX Server Load Balancing Guide (Supportin Manuale Utente (408 pagine)


Marchio: Brocade | Categoria: Accessori per computer | Dimensione: 3.54 MB |

 

Indice

Brocade Virtual ADX

1

Document History

2

Contents

3

Chapter 4 Health Checks

7

53-1003247-01

10

Appendix C Acknowledgements

12

Document conventions

13

Command syntax conventions

14

Notes, cautions, and warnings

14

Brocade resources

15

Document feedback

16

Features

17

• KVM host 0.9.0 or higher

18

Feature summary

19

Server Load Balancing

23

How SLB works

24

Load-balancing predictor

24

Connections Server load

27

Dynamic weighted predictor

29

Sticky connections

30

Application port groups

31

Concurrent connections

31

Remote Servers

32

Direct Server Return

32

Understanding L3 DSR

33

Configuring basic SLB

34

Configuration guidelines

35

Configuring the smooth factor

41

Real server ports

43

Configuring a stateless port

46

Source NAT

47

Enabling source NAT globally

49

Remote server

52

Setting the sticky age

53

Enabling group sticky

56

Application port grouping

59

Tracking primary ports

60

Track port group function

60

Primary and backup servers

65

Configuration example

68

Current backup scheme

70

Real server backup commands

71

Server backup association

71

Display the backup bindings

73

Health checks with L2 DSR

75

L2 DSR configuration example

76

Health checks with L3 DSR

80

L3 DSR configuration example

80

Displaying server information

81

Port ranges

81

Defining a port range

82

Multiple port binding

85

Configuration rules

86

Port aliases

88

Real server groups

93

Defining a real server group

94

Showing real server groups

95

Disabling VIPs

95

Disabling a real server

96

Deleting a VIP

97

Enabling force-delete

98

Real server shutdown

99

Port holddown timer

99

Behavior with flapping ports

100

Displaying port holddown

101

Persistent hash table

102

Clear vs reassign mechanisms

103

Enabling persistent hashing

103

Real server failure

108

Field Description

109

Configuration example:

111

Policy-based SLB

112

Configuring a policy list

113

10.10.10.10 1

114

20.20.0.0/16 2

114

PBSLB pool failsafe group

118

Auto Download of PBSLB list

119

PBSLB syslog messages

120

Displaying PBSLB entries

120

Packet trace

121

Miscellaneous options

122

Adding a description

123

• All TCP traffic

126

• All UDP traffic

126

• Individual TCP or UDP ports

126

Disabling port translation

128

• Quietly drops the request

130

Configuring TCP fast aging

132

Enabling transparent VIP

133

Enabling SYN ACK threshold

134

Cloning real servers

134

Configuring a host range

135

VIP route health injection

140

Configuration considerations

141

Enabling or disabling VIP RHI

142

Defining the health of a VIP

144

VIP RHI with dangling subnets

146

Example of non-dangling VIPs

147

Example of dangling VIPs

147

Displaying route type

148

Configuration examples

149

FIGURE 22 Primary mode

150

Site 2 configuration

153

Primary mode and backup mode

157

Site 1 configuration

157

RTSP server load balancing

166

TFTP load balancing

166

Show and debug commands

167

Overview

169

Stateless TCP and UDP ports

169

• Source IP: 10.161.1.88

171

Feature limitations

173

Example

174

Health Checks

175

• If the ARP entry ages out

176

Layer 4 health checks

177

Layer 7 health checks

182

Application ports

183

HTTP (status code)

185

HTTP (content verification)

186

Anonymous bonding

187

Authenticated bonding

188

SSL (complete)

191

SSL (simple)

192

Enabling Layer 7 health check

193

Server states

200

Application port states

201

State Description

202

Port profiles and attributes

203

Configuring a port profile

204

Attribute Description

205

Port policy

209

Binding the policy

211

Command line interface

213

Element health checks

214

Example for IPv4

215

Example for IPv6

215

Content match for HTTP

224

Displaying HTTP match lists

226

Binary scripted health check

230

Boolean health checks

232

Reassign threshold

236

Preventing state flapping

237

Best path to a remote server

238

Slow-start mechanism

241

Port slow-start mechanism

243

Health-check state

249

Enhanced server bringup

250

Sample show commands

251

Session table parameters

252

Virtual ADX(config)#end

253

Virtual ADX#reload

253

Configuring TCP age

255

Configuring UDP age

255

Setting the clock scale

256

Layer 7 Content Switching

259

Enabling CSW

260

Specifying scan depth

260

Enabling CSW load balance

260

CSW rules

261

URL rules

262

HTTP header rules

263

XML tag rules

264

XML tag rule

265

Description Syntax Example

265

CSW policies

266

, the persist string begins

268

Configuring the log action

269

Inserting a cookie

270

Deleting a cookie

270

Damaging a cookie

271

Inserting an HTTP header

271

on page 257

272

on page 258

272

"/,"

278

Configuring redirect

280

Prefix matching

281

Sample configurations

282

CSW topology

283

Request delete configuration

283

#default forward 1026

286

Response header rewrite

287

Creating a CSW policy

288

Specifications

290

CSW nested rules

295

Usage example

297

Displaying CSW information

298

Field... Description

299

305

Cleaning up all hash buckets

306

HTTP 1.1 support

307

Default settings

308

Enabling the TCP offload mode

308

SSL session ID workflow

315

Configuration Example

317

Command reference

318

Hot Standby High Availability

321

• Port map synchronization

322

• MAC table synchronization

322

• Session synchronization

322

Source-NAT in Hot Standby

330

Configuring a backup group ID

331

Setting the backup timer

331

Enabling backup preference

332

Delayed failover

334

SIP Server Load Balancing

339

SIP packet flow

340

SIP client registration

342

SIP terminology

342

SIP message headers

343

SIP SLB and call persistence

344

Sample deployment topologies

346

Configuring SIP SLB

349

Configuring health check

353

Debug commands

356

Debugging SIP sessions

357

Debugging SIP transactions

357

Debugging UDP processes

357

Debugging SIP packet traces

358

SIP SLB command reference

359

Defining IPv6 real servers

362

Defining IPv6 virtual servers

362

Defining IP routes

362

VLAN and tagging definitions

363

Miscellaneous

363

Saving the configuration

363

IPv6 configuration example

363

Windows NT

366

Deleting the unwanted routes

367

Long method

368

SLB Show and Debug Commands

371

Enter Utility

373

Configuring Capture Buffer

374

Specify filter(s)

374

TABLE 37 IP Filter Settings

375

TABLE 38 TCP Filter Settings

375

TABLE 39 UDP Filter Settings

375

Example:

376

Apply filter(s)

377

Start Capturing Process

378

Stop Capturing Process

379

View Captured Packets

379

In port: 15

381

• source IP: 192.168.8.100

382

Saving captured packets

383

Helpful tips

384

• Enabled

393

• Disabled

393

Syntax: show server session

398

Virtual ADX#stop-repeat-show

403

Acknowledgements

405

Cryptographic software

406

Original SSLeay License

406




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