Appendix D IP Addresses and Subnetting
NWA-3166 User’s Guide
284
The following figure shows the company network after subnetting. There are now
two sub-networks, A and B.
Figure 180
Subnetting Example: After Subnetting
In a 25-bit subnet the host ID has 7 bits, so each sub-network has a maximum of
2
7
– 2 or 126 possible hosts (a host ID of all zeroes is the subnet’s address itself,
all ones is the subnet’s broadcast address).
192.168.1.0 with mask 255.255.255.128 is subnet A itself, and 192.168.1.127
with mask 255.255.255.128 is its broadcast address. Therefore, the lowest IP
address that can be assigned to an actual host for subnet A is 192.168.1.1 and
the highest is 192.168.1.126.
Similarly, the host ID range for subnet B is 192.168.1.129 to 192.168.1.254.
Example: Four Subnets
The previous example illustrated using a 25-bit subnet mask to divide a 24-bit
address into two subnets. Similarly, to divide a 24-bit address into four subnets,
you need to “borrow” two host ID bits to give four possible combinations (00, 01,
10 and 11). The subnet mask is 26 bits
(11111111.11111111.11111111.11000000) or 255.255.255.192.
Summary of Contents for NWA-3166
Page 2: ......
Page 15: ...15 PART I Introduction Introduction 17 The Web Configurator 29 Tutorials 33 ...
Page 16: ...16 ...
Page 32: ...Chapter 2 The Web Configurator NWA 3166 User s Guide 32 ...
Page 64: ...Chapter 3 Tutorials NWA 3166 User s Guide 64 ...
Page 66: ...66 ...
Page 70: ...Chapter 4 Status Screen NWA 3166 User s Guide 70 ...
Page 122: ...Chapter 8 Wireless Screen NWA 3166 User s Guide 122 ...
Page 128: ...Chapter 9 SSID Screen NWA 3166 User s Guide 128 ...
Page 158: ...Chapter 14 IP Screen NWA 3166 User s Guide 158 ...
Page 166: ...Chapter 15 Rogue AP Detection NWA 3166 User s Guide 166 ...
Page 186: ...Chapter 17 Internal RADIUS Server NWA 3166 User s Guide 186 ...
Page 213: ...Chapter 19 Log Screens NWA 3166 User s Guide 213 ...
Page 214: ...Chapter 19 Log Screens NWA 3166 User s Guide 214 ...
Page 235: ...Chapter 20 VLAN NWA 3166 User s Guide 235 ...
Page 236: ...Chapter 20 VLAN NWA 3166 User s Guide 236 ...
Page 270: ...Appendix B Wireless LANs NWA 3166 User s Guide 270 ...
Page 300: ...Appendix D IP Addresses and Subnetting NWA 3166 User s Guide 300 ...
Page 308: ...Appendix E Text File Based Auto Configuration NWA 3166 User s Guide 308 ...
Page 314: ...Appendix F How to Access and Use the CLI NWA 3166 User s Guide 314 ...
Page 326: ...Appendix H Customer Support NWA 3166 User s Guide 326 ...
Page 332: ...Index NWA 3166 User s Guide 332 ...