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Appendix E IP Addresses and Subnetting
NWA3550 User’s Guide
319
Subnet Planning
The following table is a summary for subnet planning on a network with a 24-bit network
number.
The following table is a summary for subnet planning on a network with a 16-bit network
number.
5 128 129 158 159
6 160 161 190 191
7 192 193 222 223
8 224 225 254 255
Table 97 Eight Subnets (continued)
SUBNET
SUBNET
ADDRESS
FIRST ADDRESS
LAST
ADDRESS
BROADCAST
ADDRESS
Table 98 24-bit Network Number Subnet Planning
NO. “BORROWED”
HOST BITS
SUBNET MASK NO. SUBNETS
NO. HOSTS PER
SUBNET
1 255.255.255.128 (/25) 2 126
2 255.255.255.192 (/26) 4 62
3 255.255.255.224 (/27) 8 30
4 255.255.255.240 (/28) 16 14
5 255.255.255.248 (/29) 32 6
6 255.255.255.252 (/30) 64 2
7 255.255.255.254 (/31) 128 1
Table 99 16-bit Network Number Subnet Planning
NO. “BORROWED”
HOST BITS
SUBNET MASK NO. SUBNETS
NO. HOSTS PER
SUBNET
1 255.255.128.0 (/17) 2 32766
2 255.255.192.0 (/18) 4 16382
3 255.255.224.0 (/19) 8 8190
4 255.255.240.0 (/20) 16 4094
5 255.255.248.0 (/21) 32 2046
6 255.255.252.0 (/22) 64 1022
7 255.255.254.0 (/23) 128 510
8 255.255.255.0 (/24) 256 254
9 255.255.255.128 (/25) 512 126
10 255.255.255.192 (/26) 1024 62
11 255.255.255.224 (/27) 2048 30
12 255.255.255.240 (/28) 4096 14
13 255.255.255.248 (/29) 8192 6
- User’s Guide 1
- About This User's Guide 3
- Document Conventions 4
- Icons Used in Figures 5
- Safety Warnings 6
- Safety Warnings 7
- Contents Overview 10
- NWA3550 User’s Guide 10
- Table of Contents 11
- Chapter 6 13
- Chapter 7 13
- List of Figures 19
- List of Tables 27
- Introduction 31
- CHAPTER 1 33
- 1.2.1 Access Point 34
- 1.2.2 Bridge / Repeater 34
- 1.2.3 AP + Bridge 35
- 1.2.4 MBSSID 36
- 1.3 CAPWAP 38
- M1 M2 M3 M4 39
- 1.7 Hardware Connections 40
- CHAPTER 2 43
- CHAPTER 3 47
- Chapter 3 Status Screens 48
- Table 1 The Status Screen 48
- Chapter 3 Status Screens 49
- CHAPTER 4 51
- 4.1.2 CAPWAP and DHCP 52
- 4.1.3 CAPWAP and IP Subnets 52
- 4.1.4 Notes on CAPWAP 53
- Chapter 4 Management Mode 54
- CHAPTER 5 55
- Chapter 5 Tutorial 56
- SSID Profile 57
- 5.1.3 Further Reading 58
- Chapter 5 Tutorial 61
- Figure 35 Tutorial: Warning 72
- 5.3.3 Set Up E-mail Logs 73
- 5.3.5 Test the Setup 75
- 5.4.1 Scenario 75
- 5.4.2 Your Requirements 76
- 5.4.3 Setup 76
- Filtering field. Click Apply 78
- The Web 83
- Configurator 83
- CHAPTER 6 85
- Chapter 6 System Screens 86
- Chapter 6 System Screens 87
- Table 11 Password 87
- CHAPTER 7 91
- 7.2 Wireless LAN Basics 92
- 7.3 Quality of Service 92
- 7.3.2 ATC 93
- 7.3.3 ATC+WMM 94
- 7.3.4 Type Of Service (ToS) 95
- 7.4.1 Rapid STP 96
- 7.4.2 STP Terminology 96
- 7.5 DFS 97
- 7.6 Wireless Screen Overview 98
- 7.7.2 Bridge/Repeater Mode 101
- AP Bridge 102
- Ethernet 103
- 7.7.3 AP+Bridge Mode 106
- 7.7.4 MBSSID Mode 108
- CHAPTER 8 109
- 8.1.3 User Authentication 110
- 8.1.4 Encryption 110
- 8.2 Security Modes 111
- 8.3 Configuring Security 111
- 8.3.1 Security: WEP 112
- 8.3.2 Security: 802.1x Only 113
- 8.3.4 Security: WPA 116
- 8.4 Introduction to RADIUS 119
- 8.5 Configuring RADIUS 119
- Table 33 RADIUS 120
- CHAPTER 9 121
- Chapter 9 MBSSID and SSID 123
- Chapter 9 MBSSID and SSID 124
- 9.2 SSID 125
- Figure 67 SSID 126
- Table 35 SSID 126
- 9.2.2 Configuring SSID 127
- Table 36 Configuring SSID 128
- CHAPTER 10 129
- 10.4 The MAC Filter Screen 134
- Table 40 MAC Address Filter 136
- 10.5 Configuring Roaming 137
- Figure 77 Roaming Example 138
- Figure 78 Roaming 139
- CHAPTER 11 141
- Chapter 11 IP Screen 142
- Figure 79 IP Setup 142
- Table 42 IP Setup 142
- Chapter 11 IP Screen 143
- CHAPTER 12 145
- 12.2.1 “Honeypot” Attack 146
- Chapter 12 Rogue AP 147
- Figure 81 “Honeypot” Attack 147
- 12.3.2 Rogue AP: Friendly AP 148
- 12.3.3 Rogue AP List 149
- Chapter 12 Rogue AP 150
- CHAPTER 13 151
- 13.2 SSH 152
- 13.3 How SSH Works 152
- 13.5 Configuring Telnet 153
- 13.6 Configuring FTP 155
- 13.7 WWW (HTTP and HTTPS) 156
- 13.8 Configuring WWW 157
- 13.9 HTTPS Example 158
- 13.9.4 Login Screen 160
- 13.10 SNMP 162
- 13.10.1 Supported MIBs 164
- 13.10.2 SNMP Traps 164
- 13.11.1 SNMP v3 and Security 165
- 13.11.2 Configuring SNMP 165
- CHAPTER 14 169
- 14.3 Trusted AP Overview 171
- 14.4 Configuring Trusted AP 172
- Table 55 Trusted AP 173
- Table 56 Trusted Users 174
- CHAPTER 15 177
- 15.3 Verifying a Certificate 178
- 15.4 Configuration Summary 179
- 15.5 My Certificates 179
- Chapter 15 Certificates 180
- Figure 106 My Certificates 180
- Table 57 My Certificates 180
- Chapter 15 Certificates 181
- 15.7 Importing a Certificate 182
- 15.8 Creating a Certificate 183
- 15.9 My Certificate Details 185
- 15.10 Trusted CAs 188
- Table 61 Trusted CAs 189
- Table 62 Trusted CA Import 190
- Table 63 Trusted CA Details 191
- CHAPTER 16 195
- Chapter 16 Log Screens 196
- Table 64 View Log 196
- Chapter 16 Log Screens 197
- Figure 114 Log Settings 197
- Table 65 Log Settings 197
- 16.3 Example Log Messages 198
- Table 67 ICMP Notes 199
- 16.4 Log Commands 200
- 16.5 Log Command Example 201
- CHAPTER 17 203
- 17.2 Configuring VLAN 204
- ZyXEL Device 205
- 17.2.2 RADIUS VLAN 206
- Chapter 17 VLAN 207
- Table 71 RADIUS VLAN 207
- Figure 121 VLAN Setup 209
- Chapter 17 VLAN 210
- • Click the Close button 217
- Internet 218
- CHAPTER 18 221
- 18.2.1 System Statistics 222
- 18.3 Association List 223
- 18.4 Channel Usage 224
- 18.5 F/W Upload Screen 225
- Chapter 18 Maintenance 226
- Figure 142 Firmware Upload 226
- Table 77 Firmware Upload 226
- 18.6 Configuration Screen 227
- 18.6.1 Backup Configuration 228
- Chapter 18 Maintenance 229
- 18.7 Restart Screen 230
- PART III 231
- CHAPTER 19 233
- V I forgot the password 234
- V I cannot access the SMT 235
- Chapter 19 Troubleshooting 236
- CHAPTER 20 237
- Compatible ZyXEL Antennas 240
- 123456 78 241
- Appendices and 243
- APPENDIX A 245
- Windows Vista 248
- Mac OS X: 10.3 and 10.4 252
- Verifying Settings 255
- Mac OS X: 10.5 256
- Linux: Ubuntu 8 (GNOME) 259
- Linux: openSUSE 10.3 (KDE) 262
- APPENDIX B 269
- Appendix B Wireless LANs 270
- Appendix B Wireless LANs 271
- Fragmentation Threshold 272
- Preamble Type 273
- IEEE 802.11g Wireless LAN 273
- Wireless Security Overview 273
- IEEE 802.1x 274
- Types of EAP Authentication 275
- PEAP (Protected EAP) 276
- Dynamic WEP Key Exchange 277
- WPA and WPA2 277
- Encryption 278
- User Authentication 278
- Security Parameters Summary 280
- Antenna Overview 280
- Antenna Characteristics 281
- Types of Antennas for WLAN 281
- Positioning Antennas 281
- APPENDIX C 283
- JavaScripts 286
- Java Permissions 287
- JAVA (Sun) 288
- APPENDIX D 289
- 6 Next, click OK 305
- Konqueror 308
- APPENDIX E 313
- Subnet Masks 314
- Notation 315
- Subnetting 316
- Example: Four Subnets 317
- Example: Eight Subnets 318
- Subnet Planning 319
- Configuring IP Addresses 320
- APPENDIX F 321
- Auto Configuration by DHCP 322
- Manual Configuration 322
- Configuration Via SNMP 322
- Configuration File Format 323
- Configuration File Rules 324
- APPENDIX G 329
- ZyXEL Limited Warranty 331
- Appendix G Legal Information 332
- APPENDIX H 333
- Appendix H Customer Support 334
- Appendix H Customer Support 335
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