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Appendix B IP Addresses and Subnetting
WAP3205 User’s Guide
157
By convention, subnet masks always consist of a continuous sequence of ones
beginning from the leftmost bit of the mask, followed by a continuous sequence of
zeros, for a total number of 32 bits.
Subnet masks can be referred to by the size of the network number part (the bits
with a “1” value). For example, an “8-bit mask” means that the first 8 bits of the
mask are ones and the remaining 24 bits are zeroes.
Subnet masks are expressed in dotted decimal notation just like IP addresses. The
following examples show the binary and decimal notation for 8-bit, 16-bit, 24-bit
and 29-bit subnet masks.
Network Size
The size of the network number determines the maximum number of possible
hosts you can have on your network. The larger the number of network number
bits, the smaller the number of remaining host ID bits.
An IP address with host IDs of all zeros is the IP address of the network
(192.168.1.0 with a 24-bit subnet mask, for example). An IP address with host
IDs of all ones is the broadcast address for that network (192.168.1.255 with a
24-bit subnet mask, for example).
As these two IP addresses cannot be used for individual hosts, calculate the
maximum number of possible hosts in a network as follows:
Table 51 Subnet Masks
BINARY
DECIMAL
1ST
OCTET
2ND
OCTET
3RD
OCTET
4TH
OCTET
8-bit mask 11111111 00000000 00000000 00000000 255.0.0.0
16-bit mask 11111111 11111111 00000000 00000000 255.255.0.0
24-bit mask 11111111 11111111 11111111 00000000 255.255.255.0
29-bit mask 11111111 11111111 11111111 11111000 255.255.255.248
Table 52 Maximum Host Numbers
SUBNET MASK HOST ID SIZE
MAXIMUM NUMBER OF
HOSTS
8 bits 255.0.0.0 24 bits 2
24
– 2 16777214
16 bits 255.255.0.0 16 bits 2
16
– 2 65534
24 bits 255.255.255.0 8 bits 2
8
– 2 254
29 bits 255.255.255.248 3 bits 2
3
– 2 6
- Wireless N Access Point 1
- About This User's Guide 3
- Customer Support 4
- Document Conventions 5
- Icons Used in Figures 6
- Safety Warnings 7
- Contents Overview 10
- WAP3205 User’s Guide 10
- Table of Contents 11
- Chapter 9 13
- Chapter 10 13
- Table of Contents 15
- User’s Guide 17
- CHAPTER 1 19
- 1.5 LEDs 20
- LED COLOR STATUS DESCRIPTION 21
- CHAPTER 2 23
- CHAPTER 3 25
- 3.4 AP Mode Status Screen 27
- Chapter 3 Access Point Mode 28
- ICON DESCRIPTION 28
- 3.4.0.1 Navigation Panel 29
- Chapter 3 Access Point Mode 31
- LINK TAB FUNCTION 31
- CHAPTER 4 33
- 4.3 What You Need to Know 34
- Chapter 4 Client Mode 35
- Chapter 4 Client Mode 36
- 4.6.1.1 No Security 39
- 4.6.1.2 Static WEP 40
- 4.6.1.3 WPA(2)-PSK 41
- 4.7 Site Survey Screen 42
- 4.8 WPS Screen 43
- LABEL DESCRIPTION 44
- CHAPTER 5 45
- 5.3 What You Need to Know 46
- 5.6.1 No Security 51
- 5.6.2 Static WEP 52
- 5.6.3 WPA(2)-PSK 53
- CHAPTER 6 55
- 6.2.1 Login Screen 56
- 6.2.2 Password Screen 57
- 6.2.3 Home Screen 57
- 6.2.3.1 Weather Edit 58
- 6.3 Resetting the WAP3205 59
- CHAPTER 7 61
- 7.2.1 Device Password 62
- 7.2.2 Operation Mode 62
- 7.2.3 Wireless Configuration 63
- Chapter 7 Connection Wizard 64
- 7.2.3.2 Access Point Mode 65
- Wireless Security: WEP 68
- 7.2.3.3 Client Mode 69
- Chapter 7 Connection Wizard 71
- Figure 44 Device Rebooting 72
- CHAPTER 8 73
- 8.3.2 PIN Configuration 75
- Wireless Client 76
- (No WPS) 77
- Figure 53 Confirm Save 80
- Figure 54 Link Status 80
- Chapter 8 Tutorials 92
- Technical Reference 93
- CHAPTER 9 95
- 9.4 Packet Statistics 96
- 9.5 WLAN Station Status 98
- CHAPTER 10 99
- 10.2 What You Can Do 100
- 10.3 What You Should Know 100
- 10.3.1.1 SSID 101
- 10.3.1.2 MAC Address Filter 101
- 10.3.1.3 Encryption 101
- 10.3.1.5 WDS 102
- 10.3.1.4 WPS 102
- 10.5.1 No Security 104
- 10.5.2 WEP Encryption 105
- Chapter 10 Wireless LAN 106
- LABEL DESCRIPTION 106
- 10.5.3 WPA-PSK/WPA2-PSK 107
- 10.6 MAC Filter 108
- 10.9 WPS Screen 111
- 10.10 WPS Station Screen 113
- 10.11 Scheduling Screen 113
- 10.12 WDS Screen 115
- CHAPTER 11 117
- 11.3 What You Need To Know 118
- 11.4 LAN IP Screen 119
- 11.5 IP Alias Screen 120
- CHAPTER 12 121
- 12.3 General Screen 122
- 12.4 Password Screen 122
- 12.5 Time Setting Screen 123
- Chapter 12 Maintenance 124
- 12.6 Firmware Upgrade Screen 125
- 12.8 Reset/Restart Screen 129
- Access Point 130
- Universal Repeater 130
- 12.10 Sys Op Mode Screen 131
- CHAPTER 13 133
- I forgot the password 134
- 13.3 Internet Access 136
- Defaults 137
- CHAPTER 14 139
- APPENDIX A 143
- JavaScripts 146
- Java Permissions 148
- JAVA (Sun) 149
- Mozilla Firefox 150
- Allowing Pop-Ups 152
- Enabling Java 153
- APPENDIX B 155
- Subnet Masks 156
- Network Size 157
- Notation 158
- Subnetting 158
- Example: Four Subnets 160
- Example: Eight Subnets 161
- Subnet Planning 162
- Configuring IP Addresses 162
- Private IP Addresses 163
- IP Address Conflicts 164
- APPENDIX C 167
- Properties 169
- Verifying Settings 170
- Windows Vista 171
- Windows 7 175
- Mac OS X: 10.3 and 10.4 179
- Mac OS X: 10.5 and 10.6 182
- Linux: Ubuntu 8 (GNOME) 185
- Linux: openSUSE 10.3 (KDE) 189
- APPENDIX D 195
- Figure 115 RTS/CTS 198
- Fragmentation Threshold 199
- Preamble Type 199
- IEEE 802.11g Wireless LAN 199
- Wireless Security Overview 200
- IEEE 802.1x 201
- Types of EAP Authentication 202
- PEAP (Protected EAP) 203
- Dynamic WEP Key Exchange 204
- WPA and WPA2 204
- Encryption 205
- User Authentication 206
- Security Parameters Summary 208
- Antenna Overview 209
- Antenna Characteristics 209
- Types of Antennas for WLAN 209
- Positioning Antennas 210
- APPENDIX E 211
- Appendix E Common Services 212
- Appendix E Common Services 213
- APPENDIX F 215
- Notices 216
- Viewing Certifications 217
- Industry Canada Statement 217
- IMPORTANT NOTE: 217
- ZyXEL Limited Warranty 218
- APPENDIX G 219
- GNU GENERAL PUBLIC LICENSE 223
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