Enterasys-networks 802.11 Manual de usuario Pagina 52
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Valorado. / 5. Basado en revisión del cliente
Security
2-18
4. Once the AP transmits the new keys to all clients in the supplicant list, it begins using
the new TX key (Key4). At this time all supplicants are using Key3 as their TX key.
5. The key period expires. The AP creates two new random keys, loads them into the
inactive authenticator key indexes (Keys 1 and 2 in this example), and repeats the
process (starting at step 3).
AP Client
Key # Encryption TX/RX State TX/RX Encryption
Key1 aaaaaaaaaaaaaa Inactive aaaaaaaaaaaaaa
Key2 bbbbbbbbbbbbb Inactive bbbbbbbbbbbbb
Key3 cccccccccccccc RX Active TX cccccccccccccc
Key4 ddddddddddddd TX Active RX ddddddddddddd
AP Client
Key # Encryption TX/RX State TX/RX Encryption
Key1 eeeeeeeeeeeee Inactive aaaaaaaaaaaaaa
Key2 fffffffffffff Inactive bbbbbbbbbbbbb
Key3 cccccccccccccc RX Active TX cccccccccccccc
Key4 ddddddddddddd TX Active RX ddddddddddddd
- ENTERASYS.COM 1
- Contents 5
- 4 Wireless Network Tools 7
- 7 Problem Solving 10
- A PC Card Information 10
- C ASCII to HEX Conversion 11
- Glossary 11
- Intended Audience 13
- Associated Documents 14
- Document Conventions 15
- Getting Help 16
- Chapter 1 17
- RoamAbout AP 18
- RoamAbout PC Card 20
- Operating System Support 21
- Single AP 22
- Multiple APs 22
- Workgroup 23
- Wireless Client Behavior 24
- LAN-to-LAN Configuration 25
- Point-to-Multipoint 26
- Restrictions 29
- Ad-Hoc Network 31
- Optional Antennas 32
- Range Extender Antenna 33
- Outdoor Antenna Kit 34
- Chapter 2 35
- Characteristics 35
- Wireless Network Name 36
- Access Point MAC Addresses 37
- RoamAbout R2 MAC Addresses 37
- Channel Frequencies 38
- Transmit Rate 39
- Auto Rate 40
- Fixed Rate 40
- Communications Quality 41
- Data Throughput Efficiency 42
- AP Density and Roaming 42
- RTS/CTS Protocol 43
- Hidden Station 44
- 802.11 Power Management 45
- Security 46
- Transmit Key = 2 47
- Transmit Key = 1 47
- Authentication 48
- 802.1X Rapid Rekeying 50
- SNMP Community Names 53
- Console Port Security 53
- Network Protocols 54
- Wireless Traffic 54
- Message Types 55
- Spanning Tree Protocol 56
- Access Point 2000 57
- R2 Access Platform 57
- Network Configurations 58
- Static and Dynamic VLANs 59
- RoamAbout SNMP Management 60
- RoamAbout R2 61
- Chapter 3 63
- Designing and Implementing 63
- Infrastructure Network 64
- Noise from 65
- Elevator Shaft 65
- Microwave 65
- AP1 AP4AP2 67
- Using an Outdoor Antenna 68
- Chapter 4 73
- Wireless Network Tools 73
- RoamAbout AP Manager 74
- Other SNMP Management Tools 77
- RoamAbout Console Port 77
- Web Management 78
- RoamAbout Client Utility 79
- Chapter 5 81
- Required Information 83
- Viewing Current AP Settings 98
- Modifying the IP Address 99
- Using the AP Manager 101
- Modifying Wireless Parameters 102
- Using AP Manager 103
- Configuring for Security 104
- Setting Encryption 105
- RoamAbout R2 Console Port 108
- AP Manager 108
- to enter a custom AP 111
- →Programs→Control Panel 118
- Configuring for VLANs 120
- Setting Spanning Tree 123
- Protocol Description 125
- Resetting the RoamAbout AP 128
- Configuring Clients 130
- Chapter 6 131
- Using the Client Utility 135
- Logging Measurement Data 138
- Monitoring the AP Using RMON 140
- Chapter 7 147
- Problem Solving 147
- RoamAbout R2 LEDs 148
- AP 2000 LEDs 151
- AP (Classic) LEDs 154
- Showing Counters 157
- Counter Description 158
- Counter Wired Description 163
- Displaying Error Logs 164
- Transmit/Receive 165
- →Control Panel 168
- Windows NT 169
- Windows 95 or 98 170
- Appendix A 175
- PC Card Information 175
- Supported Frequency Sub-Bands 177
- Appendix B 179
- 1 5 180
- 6 9 180
- LKG-8996-931-01 180
- Appendix C 183
- ASCII to HEX Conversion 183
- ASCII Value HEX Value 184
- Glossary-2 188
- Glossary-3 189
- Glossary-4 190
- Glossary-5 191
- Index-1 193
- Index-2 194
- Index-3 195
- Index-4 196
- Index-5 197
- Index-6 198
- Index-7 199
- Index-8 200
- Index-9 201
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