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ZyAIR B-3000 User’s Guide
Appendix H IP Subnetting 202
Example: Four Subnets
The above example illustrated using a 25-bit subnet mask to divide a class “C” address space
into two subnets. Similarly to divide a class “C” address into four subnets, you need to
“borrow” two host ID bits to give four possible combinations of 00, 01, 10 and 11. The subnet
mask is 26 bits (11111111.11111111.11111111.11000000) or 255.255.255.192. Each subnet
contains 6 host ID bits, giving 2
6
-2 or 62 hosts for each subnet (all 0’s is the subnet itself, all
1’s is the broadcast address on the subnet).
Table 78 Subnet 1
NETWORK NUMBER
LAST OCTET BIT
VALUE
IP Address 192.168.1. 0
IP Address (Binary) 11000000.10101000.00000001. 00000000
Subnet Mask (Binary) 11111111.11111111.11111111. 11000000
Subnet Address: 192.168.1.0 Lowest Host ID: 192.168.1.1
Broadcast Address:
192.168.1.63
Highest Host ID: 192.168.1.62
Table 79 Subnet 2
NETWORK NUMBER
LAST OCTET BIT
VALUE
IP Address 192.168.1. 64
IP Address (Binary) 11000000.10101000.00000001. 01000000
Subnet Mask (Binary) 11111111.11111111.11111111. 11000000
Subnet Address: 192.168.1.64 Lowest Host ID: 192.168.1.65
Broadcast Address: 192.168.1.127 Highest Host ID: 192.168.1.126
Table 80 Subnet 3
NETWORK NUMBER
LAST OCTET BIT
VALUE
IP Address 192.168.1. 128
IP Address (Binary) 11000000.10101000.00000001. 10000000
Subnet Mask (Binary) 11111111.11111111.11111111. 11000000
Subnet Address:
192.168.1.128
Lowest Host ID: 192.168.1.129
Broadcast Address:
192.168.1.191
Highest Host ID: 192.168.1.190
- ZyAIR B-3000 1
- Copyright 3
- Federal Communications 4
- Statement 4
- Safety Warnings 6
- ZyXEL Limited Warranty 7
- Customer Support 8
- Customer Support 8 9
- ZyAIR B-3000 User’s Guide 10
- 9 Customer Support 10
- Table of Contents 11
- Chapter 7 13
- Chapter 8 13
- List of Figures 17
- List of Tables 21
- 23 List of Tables 24
- About This User's Guide 25
- Related Documentation 25
- User Guide Feedback 25
- Syntax Conventions 26
- Graphics Icons Key 26
- CHAPTER 1 27
- 1.2.2 Firmware Features 28
- Layer-2 Isolation 29
- Wi-Fi Protected Access 29
- WDS Functionality 29
- 802.11b Wireless LAN Standard 29
- 1.3.1 Access Point 32
- 1.3.2 Multiple ESS 32
- 1.3.3 AP + Bridge 33
- 1.3.4 Bridge / Repeater 34
- CHAPTER 2 37
- Figure 10 ZyAIR Top Panel 38
- 2.2.2 Power Port 39
- 2.2.3 The RESET Button 39
- 2.2.4 Antennas 39
- 2.5 Configuring Your ZyAIR 40
- CHAPTER 3 41
- 3.2 Resetting the ZyAIR 42
- CHAPTER 4 45
- 45 Chapter 4 Wizard Setup 46
- Chapter 4 Wizard Setup 46 47
- 4.4 Wizard Setup: IP Address 48
- Chapter 4 Wizard Setup 48 49
- 4.5 Basic Setup Complete 50
- CHAPTER 5 51
- 5.3 Configuring Password 52
- Chapter 5 System Screens 52 53
- Table 8 Password 53
- 53 Chapter 5 System Screens 54
- Figure 19 Time Setting 54
- Table 9 Time Setting 54
- Chapter 5 System Screens 54 55
- 55 Chapter 5 System Screens 56
- CHAPTER 6 57
- 6.2.3 Restricted Access 58
- 6.2.4 Hide ZyAIR Identity 58
- 6.2.6 WEP Encryption 59
- 6.3.1 Access Point Mode 59
- 59 Chapter 6 Wireless LAN 60
- Chapter 6 Wireless LAN 60 61
- 6.3.2 Multiple ESS Mode 62
- 6.3.3 Bridge/Repeater Mode 62
- Chapter 6 Wireless LAN 62 63
- 63 Chapter 6 Wireless LAN 64
- 6.3.4 AP+Bridge Mode 65
- 6.4 Configuring Roaming 66
- Chapter 6 Wireless LAN 66 67
- Figure 26 Roaming Example 67
- 67 Chapter 6 Wireless LAN 68
- Figure 27 Roaming 68
- Table 13 Roaming 68
- Chapter 6 Wireless LAN 68 69
- 69 Chapter 6 Wireless LAN 70
- 00:0a:c5:00:00:66 71
- 00:0a:c5:00:00:cc 71
- 71 Chapter 6 Wireless LAN 72
- Chapter 6 Wireless LAN 72 73
- 6.7 MAC Filter 74
- Chapter 6 Wireless LAN 74 75
- Table 15 MAC Address Filter 75
- 6.8 Introduction to WPA 76
- Chapter 6 Wireless LAN 76 77
- 77 Chapter 6 Wireless LAN 78
- Chapter 6 Wireless LAN 78 79
- 79 Chapter 6 Wireless LAN 80
- Chapter 6 Wireless LAN 80 81
- 81 Chapter 6 Wireless LAN 82
- 6.11 Configuring RADIUS 83
- 83 Chapter 6 Wireless LAN 84
- Figure 42 RADIUS 84
- Table 21 RADIUS 84
- Chapter 6 Wireless LAN 84 85
- 85 Chapter 6 Wireless LAN 86
- CHAPTER 7 87
- 7.1.5.1 Edit ESS 90
- 7.2 VLAN 91
- 7.2.3 Management VLAN ID 93
- 7.2.4 Configuring VLAN 93
- 7.3 MAC Filter Summary 94
- CHAPTER 8 95
- 8.3 Configuring IP 96
- CHAPTER 9 97
- 9.2 Configuring Log Settings 98
- Chapter 9 Log Screens 98 99
- Figure 53 Log Settings 99
- 99 Chapter 9 Log Screens 100
- Table 29 Log Settings 100
- CHAPTER 10 101
- 10.3 Association List 102
- 10.4 Channel Usage 103
- Figure 57 Channel Usage 104
- Table 33 Channel Usage 104
- 103 Chapter 10 Maintenance 104
- 10.5 F/W Upload Screen 105
- 10.6 Configuration Screen 106
- 10.6.1 Backup Configuration 107
- 107 Chapter 10 Maintenance 108
- 10.7 Restart Screen 109
- 109 Chapter 10 Maintenance 110
- CHAPTER 11 111
- Table 37 Main Menu Commands 113
- Table 38 Main Menu Summary 115
- CHAPTER 12 117
- CHAPTER 13 119
- 13.3 Wireless LAN Setup 120
- Chapter 13 LAN Setup 120 121
- 121 Chapter 13 LAN Setup 122
- Chapter 13 LAN Setup 122 123
- 13.3.2 Configuring Roaming 124
- 125 Chapter 13 LAN Setup 126
- CHAPTER 14 127
- CHAPTER 15 129
- 15.2 Supported MIBs 130
- 15.3 SNMP Configuration 130
- 15.4 SNMP Traps 131
- Table 46 SNMP Traps 132
- CHAPTER 16 133
- RADIUS Server as shown next 134
- 16.1.3 802.1x 135
- CHAPTER 17 139
- 17.2 System Information 140
- 17.2.1 System Information 141
- 17.3 Log and Trace 142
- 17.4 Diagnostic 143
- Diagnostic 144
- CHAPTER 18 145
- 18.2 Backup Configuration 146
- 18.2.4 Example: TFTP Command 149
- 18.3 Restore Configuration 150
- 18.3.1 Restore Using FTP 151
- 18.4.1 Firmware Upload 152
- 18.4.4 TFTP File Upload 153
- 18.4.5 Example: TFTP Command 154
- CHAPTER 19 157
- 19.1.1 CNM 158
- Figure 113 159
- Table 56 CNM Commands 159
- 19.1.3 Configuration Example 161
- 19.2 Time and Date Setting 162
- 19.2.1 Resetting the Time 164
- Appendix A 165
- Troubleshooting 165
- Problems with the Password 166
- Problems with Telnet 166
- Appendix B 167
- Specifications 167
- Appendix C 169
- Appendix D 171
- Protection 171
- Appendix E 173
- Installing Components 174
- Configuring 175
- Windows 2000/NT/XP 176
- Macintosh OS 8/9 180
- Macintosh OS X 182
- Verifying Settings 183
- Appendix F 185
- IP addresses dynamically 187
- Appendix G 189
- Wireless LANs 189
- 189 Appendix G Wireless LANs 190
- Appendix G Wireless LANs 190 191
- Fragmentation Threshold 192
- Preamble Type 193
- IEEE 802.1x 194
- Types of Authentication 195
- PEAP (Protected EAP) 196
- Dynamic WEP Key Exchange 196
- User Authentication 197
- Encryption 197
- Security Parameters Summary 198
- Appendix H 199
- IP Subnetting 199
- Subnet Masks 200
- Subnetting 200
- Example: Two Subnets 201
- Table 76 Subnet 1 202
- Table 77 Subnet 2 202
- 201 Appendix H IP Subnetting 202
- Example: Four Subnets 203
- Example Eight Subnets 204
- Appendix H IP Subnetting 204 205
- 205 Appendix H IP Subnetting 206
- Appendix I 207
- Command Interpreter 207
- Appendix J 209
- Log Descriptions 209
- Log Commands 210
- Log Command Example 211
- Appendix K 213
- Positioning Antennas 214
- Appendix L 215
- Power Adaptor Specifications 215
- Numerics 217
- ZyAIR G-3000 User’s Guide 218
- 217 Index 218
- Index 218 219
- 219 Index 220
- Index 220 221
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