Brocade Virtual ADX Server Load Balancing Guide (Supportin Manual de usuario Pagina 4
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- Tabla de contenidos
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iv Brocade Virtual ADX Server Load Balancing Guide
53-1003247-01
Changing the Load-Balancing Predictor Method . . . . . . . . . . . . . . . 21
Configuring a weighted predictor . . . . . . . . . . . . . . . . . . . . . . . . 22
Configuring dynamic weighted predictor . . . . . . . . . . . . . . . . . . 24
Configuring the smooth factor . . . . . . . . . . . . . . . . . . . . . . . . . .25
Real server ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Disabling or re-enabling application ports . . . . . . . . . . . . . . . . . 27
Globally disabling application ports . . . . . . . . . . . . . . . . . . . . . . 28
Disabling SLB to a server when an application goes down . . . 28
Slow-start mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Enabling or disabling the keepalive health check . . . . . . . . . . . 29
Configuring a real port as TCP-only or UDP-only . . . . . . . . . . . .30
Configuring a stateless port . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Source NAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Enabling source NAT globally . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Enabling source NAT on a real server. . . . . . . . . . . . . . . . . . . . .33
Configuring a shared source IP address for NAT . . . . . . . . . . . .34
Client subnet based source NAT . . . . . . . . . . . . . . . . . . . . . . . . . 34
Enabling port allocation per real server for source NAT IP . . . . 35
Remote server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Sticky and concurrent connections . . . . . . . . . . . . . . . . . . . . . . . . . .36
Configuring sticky ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Configuring stickiness based on client’s subnet . . . . . . . . . . . . 37
Setting the sticky age . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Increasing the sticky-age per VIP longer than 60 minutes . . . .38
Sticky connection return from backup server to primary . . . . .39
Group sticky: Layer 4 SLB to server group . . . . . . . . . . . . . . . . .39
Enabling a concurrent port . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Application port grouping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Tracking primary ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Track port group function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
TCP/UDP application groups configuration example. . . . . . . . . 47
Primary and backup servers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Designating a real server as a backup . . . . . . . . . . . . . . . . . . . . 51
Enabling a VIP to use the primary and backup servers. . . . . . . 51
Configuration example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Designating a real server port as a backup . . . . . . . . . . . . . . . .53
Per server based real server backup . . . . . . . . . . . . . . . . . . . . .54
Configuring Direct Server Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Configuring L2 Direct Server Return. . . . . . . . . . . . . . . . . . . . . .58
Configuring L3 Direct Server Return. . . . . . . . . . . . . . . . . . . . . .63
Displaying server information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Port ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Defining a port range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Using a port range under a real server definition . . . . . . . . . . . 67
Using a port range under a virtual server definition . . . . . . . . . 67
Binding a port range for virtual ports to a real server. . . . . . . .67
Defining port profile for port range. . . . . . . . . . . . . . . . . . . . . . . 68
Displaying a list of port ranges . . . . . . . . . . . . . . . . . . . . . . . . . . 68
- 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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