Psion Teklogix 9160 G2 - Manual (Page 12)

Contents
viii Psion Teklogix 9160 G2 Wireless Gateway User Manual
Chapter 19: Quality of Service (QoS)
19.1 Understanding QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
19.1.1 QoS And Load Balancing . . . . . . . . . . . . . . . . . . . . . . . . 183
19.1.2 802.11e And WMM Standards Support . . . . . . . . . . . . . . . . . 183
19.1.3 QoS Queues And Parameters To Coordinate Traffic Flow . . . . . . . 184
19.1.3.1 QoS Queues And Type Of Service (ToS) On Packets. . . . . . . . 184
19.1.3.2 EDCF Control Of Data Frames And Arbitration Interframe Spaces 186
19.1.3.3 Random Backoff And Minimum/Maximum Contention Windows. 187
19.1.3.4 Packet Bursting For Better Performance . . . . . . . . . . . . . . 188
19.1.3.5 Transmission Opportunity (TXOP) Interval For Client Stations . . 188
19.1.4 802.1p And DSCP Tags . . . . . . . . . . . . . . . . . . . . . . . . . 188
19.1.4.1 VLAN Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
19.1.4.2 DSCP Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
19.2 Configuring QoS Queues . . . . . . . . . . . . . . . . . . . . . . . . . . 191
19.2.1 Configuring AP EDCA Parameters . . . . . . . . . . . . . . . . . . . 192
19.2.2 Enabling/Disabling Wi-Fi Multimedia. . . . . . . . . . . . . . . . . . 193
19.2.3 Configuring Station EDCA Parameters . . . . . . . . . . . . . . . . . 194
19.3 Updating Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Chapter 20: Wireless Distribution System
20.1 Understanding The Wireless Distribution System . . . . . . . . . . . . . 199
20.1.1 Using WDS To Bridge Distant Wired LANs . . . . . . . . . . . . . . 199
20.1.2 Using WDS To Extend Network Beyond The Wired Coverage Area. . 200
20.1.3 Using WDS To Create Backup Links . . . . . . . . . . . . . . . . . . 201
20.2 Security Considerations Related To WDS Links . . . . . . . . . . . . . . 201
20.2.1 Understanding Static WEP Data Encryption . . . . . . . . . . . . . . 202
20.2.2 Understanding WPA (PSK) Data Encryption . . . . . . . . . . . . . . 202
20.3 Configuring WDS Settings . . . . . . . . . . . . . . . . . . . . . . . . . 203
20.3.1 Example Of Configuring A WDS Link . . . . . . . . . . . . . . . . . 206
20.4 Updating Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Chapter 21: Configuring SNMP
21.1 Understanding SNMP Settings . . . . . . . . . . . . . . . . . . . . . . . 211