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Contents
viii
Psion Teklogix 9160 G2 Wireless Gateway User Manual
Chapter 19: Quality of Service (QoS)
19.1 Understanding QoS.............................183
19.1.1QoS And Load Balancing........................183
19.1.2 802.11e And WMM Standards Support .................183
19.1.3QoS Queues And Parameters To Coordinate Traffic Flow.......184
19.1.3.1QoS Queues And Type Of Service (ToS) On Packets........184
19.1.3.2 EDCF Control Of Data Frames And Arbitration Interframe Spaces186
19.1.3.3 Random Backoff And Minimum/Maximum Contention Windows.187
19.1.3.4Packet Bursting For Better Performance..............188
19.1.3.5 Transmission Opportunity (TXOP) Interval For Client Stations . .188
19.1.4802.1p And DSCP Tags.........................188
19.1.4.1VLAN Priority............................190
19.1.4.2DSCP Priority............................190
19.2 Configuring QoS Queues..........................191
19.2.1Configuring AP EDCA Parameters...................192
19.2.2Enabling/Disabling Wi-Fi Multimedia..................193
19.2.3Configuring Station EDCA Parameters.................194
19.3 Updating Settings..............................195
Chapter 20: Wireless Distribution System
20.1 Understanding The Wireless Distribution System.............199
20.1.1Using WDS To Bridge Distant Wired LANs..............199
20.1.2 Using WDS To Extend Network Beyond The Wired Coverage Area. .200
20.1.3Using WDS To Create Backup Links ..................201
20.2 Security Considerations Related To WDS Links ..............201
20.2.1Understanding Static WEP Data Encryption ..............202
20.2.2Understanding WPA (PSK) Data Encryption..............202
20.3 Configuring WDS Settings.........................203
20.3.1Example Of Configuring A WDS Link.................206
20.4 Updating Settings..............................207
Chapter 21: Configuring SNMP
21.1 Understanding SNMP Settings.......................211