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ZyXEL G-1000 v2 User’s Guide
157
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 72 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 73 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 74 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
- ZyXEL G-1000 v2 1
- Copyright 3
- Interference Statements and 4
- Certifications 4
- Safety Warnings 6
- ZyXEL Limited Warranty 7
- Customer Support 8
- Customer Support 9 9
- ZyXEL G-1000 v2 User’s Guide 10
- 10 Customer Support 10
- Table of Contents 11
- Table of Contents 15 15
- 16 Table of Contents 16
- List of Figures 17
- 20 List of Figures 20
- List of Tables 21
- 24 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
- CHAPTER 2 33
- 2.3 Resetting the G-1000 v2 34
- 2.4.1 Navigation Panel 35
- 2.4.2 Status Screen 36
- Figure 6 Status Screen 37
- Table 5 Status Screen 37
- Table 7 Association List 39
- CHAPTER 3 41
- 42 Chapter 3 Wizard Setup 42
- Chapter 3 Wizard Setup 43 43
- 44 Chapter 3 Wizard Setup 44
- Chapter 3 Wizard Setup 45 45
- 3.3.3 IP Address Assignment 46
- 3.3.4 Apply Settings 47
- 48 Chapter 3 Wizard Setup 48
- Figure 13 Wizard Completed 48
- CHAPTER 4 49
- 4.2.1 SSID 50
- 4.2.2 MAC Address Filter 50
- 4.2.3 User Authentication 50
- 4.2.4 Encryption 51
- 52 Chapter 4 Wireless LAN 52
- 4.4 Wireless LAN Screen 53
- 4.4.1 No Security 54
- 4.4.2 WEP Encryption 55
- 4.4.3 WEP Encryption Screen 55
- 4.4.4 WPA(2)-PSK 56
- Chapter 4 Wireless LAN 57 57
- 58 Chapter 4 Wireless LAN 58
- Figure 19 Wireless: WPA(2) 58
- Chapter 4 Wireless LAN 59 59
- Table 20 Wireless: WPA(2) 59
- 4.5 MAC Filter 60
- Chapter 4 Wireless LAN 61 61
- Table 21 MAC Address Filter 61
- ZyAIR LED 62
- CHAPTER 5 63
- 5.2 Configuring DNS 64
- Table 24 Network: Advanced 65
- CHAPTER 6 67
- 6.2 WWW 68
- 6.3 Telnet 69
- 6.4 Configuring Telnet 69
- 6.5 Configuring FTP 70
- 6.6 SNMP 71
- 6.6.1 Supported MIBs 72
- 6.6.2 SNMP Traps 73
- 6.6.3 Configuring SNMP 73
- CHAPTER 7 75
- 76 Chapter 7 System 76
- 7.2 Time Setting 77
- 78 Chapter 7 System 78
- Chapter 7 System 79 79
- 80 Chapter 7 System 80
- CHAPTER 8 81
- 82 Chapter 8 Logs 82
- Table 32 View Log 82
- Chapter 8 Logs 83 83
- Figure 33 Log Settings 83
- Table 33 Log Settings 83
- 8.4 SMTP Error Messages 84
- Chapter 8 Logs 85 85
- 86 Chapter 8 Logs 86
- CHAPTER 9 87
- 88 Chapter 9 Tools 88
- Figure 37 Error Message 88
- 9.2 Configuration Screen 89
- 90 Chapter 9 Tools 90
- 9.3 Restart 91
- 92 Chapter 9 Tools 92
- CHAPTER 10 93
- Table 38 Main Menu Commands 95
- Table 39 Main Menu Summary 96
- CHAPTER 11 97
- 98 Chapter 11 General Setup 98
- ESC] at any time to cancel 98
- CHAPTER 12 99
- 12.3 Wireless LAN Setup 100
- Chapter 12 LAN Setup 101 101
- 102 Chapter 12 LAN Setup 102
- 12.3.2 Configuring Roaming 103
- 104 Chapter 12 LAN Setup 104
- CHAPTER 13 105
- CHAPTER 14 107
- 14.3 802.1x 109
- CHAPTER 15 113
- 15.2 System Information 115
- 15.3 Log and Trace 116
- 15.4 Diagnostic 117
- CHAPTER 16 119
- 16.2 Backup Configuration 120
- 16.2.4 Example: TFTP Command 123
- CHAPTER 17 125
- 17.2 Time and Date Setting 126
- 17.3 Remote Management Setup 127
- 17.5 System Timeout 130
- CHAPTER 18 131
- Problems with the Password 132
- APPENDIX A 133
- APPENDIX B 135
- APPENDIX C 137
- Installing Components 138
- Configuring 139
- Windows 2000/NT/XP 140
- Macintosh OS 8/9 144
- Macintosh OS X 146
- Verifying Settings 147
- APPENDIX D 149
- IP addresses dynamically 151
- APPENDIX E 153
- Subnet Masks 154
- Subnetting 154
- Example: Two Subnets 155
- Table 70 Subnet 1 156
- Table 71 Subnet 2 156
- Example: Four Subnets 157
- Example Eight Subnets 158
- APPENDIX F 161
- APPENDIX G 163
- Log Commands 164
- Displaying Logs 165
- Log Command Example 166
- APPENDIX H 167
- Figure 97 Basic Service Set 169
- Wireless LAN Basics 170
- Fragmentation Threshold 171
- IEEE 802.11 172
- APPENDIX I 173
- Types of RADIUS Messages 174
- Types of Authentication 175
- WEP Authentication 176
- Encryption 178
- User Authentication 179
- Security Parameters Summary 181
- APPENDIX J 185
- PEAP (Protected EAP) 186
- APPENDIX K 187
- Types of Antennas For WLAN 188
- Connector Type 188
- Numerics 189
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