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Chapter 19: Quality Of Service (QoS)
Configuring AP EDCA Parameters
Psion Teklogix 9160 G2 Wireless Gateway User Manual 197
AIFS
(Inter-Frame Space)
The
Arbitration Inter-Frame Spacing
(AIFS) specifies a wait time (in milliseconds) for
data frames
.
Valid values for AIFS are
1
through
255
.
For more information, see DCF Control of Data Frames and Interframe Spaces.
For more information, see “EDCF Control Of Data Frames And Arbitration Interframe Spaces” on
page 190.
cwMin
(Minimum Conten-
tion Window)
This parameter is input to the algorithm that determines the initial random backoff wait time (“window”)
for retry of a transmission.
The value specified here in the
Minimum Contention Window
is the upper limit (in milliseconds) of a
range from which the initial random backoff wait time is determined.
The first random number generated will be a number between 0 and the number specified here.
If the first random backoff wait time expires before the data frame is sent, a retry counter is incremented
and the random backoff value (window) is doubled. Doubling will continue until the size of the random
backoff value reaches the number defined in the Maximum Contention Window.
Valid values for the “
cwmin
” are
1, 3, 7, 15, 31, 63, 127, 255, 511
, or
1023
.
For more information, see “Random Backoff And Minimum/Maximum Contention Windows” on
page 191.
cwMax
(Maximum Conten-
tion Window)
The value specified here in the
Maximum Contention Window
is the upper limit (in milliseconds) for
the doubling of the random backoff value. This doubling continues until either the data frame is sent or
the Maximum Contention Window size is reached.
Once the Maximum Contention Window size is reached, retries will continue until a maximum number
of retries allowed is reached.
Valid values for the “
cwmax
” are
1, 3, 7, 15, 31, 63, 127, 255, 511
, or
1023
.
For more information, see “Random Backoff And Minimum/Maximum Contention Windows” on
page 191.
Table 19.3 AP EDCA Parameters
Field Description
- Wireless Gateway 1
- Disclaimer 2
- What is RoHS? 4
- RoHS Logo 4
- TABLE OF CONTENTS 5
- Contents 10
- Chapter 21: Configuring SNMP 12
- Chapter 24: 802.IQ Settings 14
- Chapter 27: Specifications 15
- Appendix C: Troubleshooting 16
- Appendix D: Glossary 16
- APPROVALS AND SAFETY SUMMARY 17
- Earth Grounding 22
- INTRODUCTION 1 25
- 1.1 About This Manual 27
- Chapter 1: Introduction 28
- About This Manual 28
- 1.3 Text Conventions 31
- 1.4.2 Access Point Functions 33
- 1.4.3 Base Station Functions 33
- 1.5 Features and Benefits 34
- 1.5.3 Security Features 35
- 1.5.6 Networking 37
- 1.5.7 SNMP Support 37
- 1.6 What’s Next? 38
- INSTALLATION REQUIREMENTS 2 39
- 2.1.1 Environment 41
- Maintenance 42
- Power And Antenna Cables 43
- 2.2.1 Ports 44
- LAN Installation: Overview 45
- Status Indicators (LEDs) 46
- Name Function Colour 47
- PRELAUNCH CHECKLIST 3 49
- The 9160 G2 Wireless Gateway 51
- 3.2 Administrator’s Computer 54
- 3.3 Wireless Client Computers 55
- 3.4.2 Dynamic IP Addressing 57
- 3.4.3 Static IP Addressing 57
- Recovering An IP Address 58
- 4.3 Power On The Access Point 64
- Field Default Setting 65
- 4.6 What’s Next? 66
- CONFIGURING BASIC SETTINGS 5 69
- Point” on page 48 71
- 5.3 Provide Network Settings 73
- 5.4 Update Basic Settings 74
- Icon Description 75
- 6.1 Overview 79
- 6.3 Understanding Clustering 79
- 6.3.1 What Is A Cluster? 80
- 6.3.6 Cluster Formation 82
- 6.3.8 Intra-Cluster Security 82
- 6.5 Starting Clustering 84
- 6.6 Stopping Clustering 85
- Standalone APs 85
- 6.8 Session Monitoring 86
- MANAGING USER ACCOUNTS 7 89
- 7.1 Overview 91
- 7.2.1 Viewing User Accounts 92
- 7.2.2 Adding A User 92
- 7.2.3 Editing A User Account 93
- 7.2.5 Enabling A User Account 94
- 7.2.7 Removing A User Account 94
- CHANNEL MANAGEMENT 8 97
- Chapter 8: Channel Management 99
- Field Description 102
- Table 8.2 AP’s Channel Plan 103
- Table 8.3 Advanced Settings 104
- WIRELESS NEIGHBORHOOD 9 107
- CONFIGURING SECURITY 10 115
- Encryption Algorithms 118
- Configuring Security Settings 124
- Table 10.5 Security Settings 125
- 10.2.2 Security Modes 126
- Security Modes 127
- 127.0.0.1 134
- 10.3 Updating Settings 142
- MAINTENANCE AND MONITORING 11 143
- 11.1 Interfaces 145
- 11.2 Event Logs 146
- 11.2.2 Severity 147
- 11.2.3 Depth 148
- 11.2.5 Events Log 151
- Link Integrity Monitoring 153
- 12.1.1 DNS Hostname 162
- 12.1.2 Guest Access 162
- 12.1.6 Updating Settings 167
- Access” 175
- To update wireless settings: 176
- SETTING UP GUEST ACCESS 14 177
- 14.4 Deployment Example 182
- CONFIGURING VLANS 15 183
- 15.2 Configuring VLANs 185
- 15.3 Updating Settings 187
- Understanding Radio Settings 191
- Navigating To Radio Settings 192
- Table 16.1 Radio Settings 193
- 16.4 Updating Settings 197
- MAC ADDRESS FILTERING 17 199
- FE:DC:BA:09:87:65 201
- 17.2 Using MAC Filtering 202
- 17.3 Updating Settings 202
- LOAD BALANCING 18 203
- 18.1.3 Load Balancing And QoS 205
- Chapter 18: Load Balancing 206
- 18.4 Updating Settings 208
- QUALITY OF SERVICE (QOS) 19 209
- 19.1 Understanding QoS 211
- = MinCW doubled 215
- = re-doubled 215
- 19.1.4 802.1p And DSCP Tags 216
- 19.1.4.1 VLAN Priority 217
- 19.2 Configuring QoS Queues 218
- Configuring QoS Queues 219
- 19.3 Updating Settings 224
- 20.3 Configuring WDS Settings 230
- Configuring WDS Settings 231
- 20.4 Updating Settings 234
- CONFIGURING SNMP 21 235
- Chapter 21: Configuring SNMP 237
- Understanding SNMP Settings 237
- Configuring SNMP Settings 239
- Returned 239
- Table 21.1 SNMP Settings 240
- 21.3.1 Configuring SNMP Traps 241
- 21.3.2 Updating SNMP Settings 242
- HE 9160 G2 AS BASE STATION 22 243
- 22.1 Overview 245
- 22.2 Radio Protocols 246
- 22.3 Narrow Band Menus 246
- Radio Card Status 248
- 22.3.2 Connectivity Options 249
- Operating Mode 250
- Auto-Startup 250
- Shared Channel 251
- Number of Poll Windows 251
- Size of Poll Windows 252
- Maximum Message Segment Size 252
- Number of Retries 252
- Collision Size 252
- Free Window Factor 253
- Message Mode Limit 253
- Callsign Period 253
- Callsign String 253
- Sync Delay 254
- Remote Txon 254
- Active Channel 254
- 22.4 Connectivity Menus 255
- Base Station Number 257
- Description 257
- IP Address 257
- Message Size 258
- RRM Group Number 260
- Combination 264
- Operate in Cellular Mode 267
- Poll ID 267
- Expiration Period 269
- 22.4.4 Hosts Menu 270
- Hosts Menu 271
- Updating Settings 273
- No Online/Offline 273
- Monitor Poll 273
- 23.1 Overview 277
- 23.3 Hosts Menu 278
- Is Host Fujitsu 282
- Use International EBCDIC 282
- 3274 Emulation 283
- Passthru 284
- Procedures 285
- Host Print 285
- Remote Print 286
- Transmit Line 287
- AIAG Information From Host 288
- Visible Match Character 289
- Hidden Match Character 290
- Serial I/O 291
- Print Line 291
- Print Form Length 291
- Barcode 291
- Entry Line 291
- Field Overhead 292
- Command Region 292
- Terminal Type 293
- Host Port 293
- First Local Terminal Port 294
- Local IP Address to Bind 294
- First Terminal Listen Port 294
- Actively Negotiate with Host 294
- Configure LU Names 295
- LU Name Prefix 295
- Auto-telnet 296
- Auto-telnet Host 296
- Function key n 297
- Write Error Code 298
- Field Underline Remapping 299
- Enable Virtual Device Names 311
- Configure Device Names 311
- Device Name Prefix 312
- Maximum Screen Size 313
- Host Timeout 313
- Escape Timeout 314
- Threshold 314
- Function Key Remapping 315
- Arrow Key Remapping 315
- Page Saving 315
- Convert 7 to 8 Bits 316
- Lower Character Set (GL) 316
- Upper Character Set (GR) 316
- TCP Session Request Key 318
- Session Cycle Key 318
- Last Active Session Key 318
- Auto-telnet/login Enable 319
- Auto-telnet Terminal Prompt 320
- Auto-login User ID 320
- Auto-login Password 320
- Auto-login User ID Prompt 320
- Auto-login Password Prompt 321
- Auto-login Failed Login 321
- Allow TCP Sessions 322
- 802.IQ SETTINGS 24 325
- Beacon Period 327
- Terminal Offline Timeout 328
- Chapter 24: 802.IQ Settings 329
- 802.IQ v1/v2 Common Features 329
- Initial RTT 330
- Protocol Type ID 330
- Forward 802.IQ Packets Only 330
- 802.IQ v1 Beacon Interfaces 331
- Beacon UDP Port 331
- http://www.ntp.org 335
- Figure 25.1 Time Settings 335
- 25.3 Updating Settings 336
- 26.6 Upgrading The Firmware 341
- 26.6.1 Update 342
- SPECIFICATIONS 27 345
- 27.1 Physical Description 347
- 27.3 AC Power Requirements 347
- 27.5 Processor And Memory 348
- 27.6 Network Interfaces 348
- 27.7 Radios 348
- Chapter 27: Specifications 349
- APPENDIX A 351
- Console Port Cable No. 19387 352
- Contact Signal Contact Signal 353
- APPENDIX B 355
- Authentication Server 357
- Settings 359
- (No Security) 361
- Network Authentication 362
- Data Encryption 362
- Disabled 362
- PEAP Client 376
- IPAddressOfServer 386
- APPENDIX C 391
- Appendix C: Troubleshooting 392
- C.2 Cluster Recovery 394
- APPENDIX D 395
- Appendix D: Glossary 396
- Access Point 399
- Ad hoc Mode 399
- Atheros XR (Extended Range) 400
- Basic Rate Set 400
- Broadcast 401
- Broadcast Address 401
- Federal 402
- 66.93.138.219 403
- Dynamic IP Address 404
- Ethernet 405
- Infrastructure Mode 408
- Intrusion Detection 408
- Lease Time 411
- MDI and MDI-X 411
- MSCHAP V2 412
- Multicast 412
- Network Address 413
- Packet Loss 414
- RTS Threshold 418
- Subnet Mask 419
- Supported Rate Set 419
- W3C. XML is a 425
- 3274 Emulation 267 428
- 5250 Emulation 283 428
- 3274 Emulation 259 428
- 5250 Emulation 276 428
- ANSI Telnet Protocol 293 428
- See quality of service 185 433
- 3274 Emulation 262 433
- 5250 Emulation 278 433
- ANSI Emulation 292 433
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