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P-660H/HW/W-T Series User’ Guide
Appendix D
382
Subnetting With Class A and Class B Networks.
For class “A” and class “B” addresses the subnet mask also determines which bits are part of
the network number and which are part of the host ID.
A class “B” address has two host ID octets available for subnetting and a class “A” address has
three host ID octets (see
) available for subnetting.
The following table is a summary for class “B” subnet planning.
Table 137
Class B 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
14
255.255.255.252 (/30)
16384
2
15
255.255.255.254 (/31)
32768
1
Summary of Contents for P-660H - VERSION 3.40
Page 1: ...P 660H HW W T Series ADSL 2 Gateway User s Guide Version 3 40 6 2005...
Page 9: ...P 660H HW W T Series User Guide 9 Customer Support...
Page 31: ...P 660H HW W T Series User Guide 31 List of Figures...
Page 37: ...P 660H HW W T Series User Guide 37 List of Tables...
Page 41: ...P 660H HW W T Series User Guide 41 Introduction to DSL...
Page 61: ...P 660H HW W T Series User Guide 61 Chapter 3 Wizard Setup for Internet Access...
Page 89: ...P 660H HW W T Series User Guide 89 Chapter 5 Wireless LAN...
Page 131: ...P 660H HW W T Series User Guide 131 Chapter 10 Firewalls...
Page 161: ...P 660H HW W T Series User Guide 161 Chapter 13 Remote Management Configuration...
Page 175: ...P 660H HW W T Series User Guide 175 Chapter 14 Universal Plug and Play UPnP...
Page 181: ...P 660H HW W T Series User Guide 181 Chapter 15 Logs Screens...
Page 195: ...P 660H HW W T Series User Guide 195 Chapter 16 Media Bandwidth Management Advanced Setup...
Page 207: ...P 660H HW W T Series User Guide 207 Chapter 17 Maintenance...
Page 217: ...P 660H HW W T Series User Guide 217 Chapter 19 Menu 1 General Setup...
Page 221: ...P 660H HW W T Series User Guide 221 Chapter 20 Menu 2 WAN Backup Setup...
Page 225: ...P 660H HW W T Series User Guide 225 Chapter 21 Menu 3 LAN Setup...
Page 229: ...P 660H HW W T Series User Guide 229 Chapter 22 Wireless LAN Setup...
Page 235: ...P 660H HW W T Series User Guide 235 Chapter 23 Internet Access...
Page 249: ...P 660H HW W T Series User Guide 249 Chapter 25 Static Route Setup...
Page 253: ...P 660H HW W T Series User Guide 253 Chapter 26 Bridging Setup...
Page 269: ...P 660H HW W T Series User Guide 269 Chapter 27 Network Address Translation NAT...
Page 285: ...P 660H HW W T Series User Guide 285 Chapter 29 Filter Configuration...
Page 305: ...P 660H HW W T Series User Guide 305 Chapter 32 System Information and Diagnosis...
Page 317: ...P 660H HW W T Series User Guide 317 Chapter 33 Firmware and Configuration File Maintenance...
Page 323: ...P 660H HW W T Series User Guide 323 Chapter 34 System Maintenance...
Page 327: ...P 660H HW W T Series User Guide 327 Chapter 35 Remote Management...
Page 337: ...P 660H HW W T Series User Guide 337 Chapter 36 IP Policy Routing...
Page 341: ...P 660H HW W T Series User Guide 341 Chapter 37 Call Scheduling...
Page 357: ...P 660H HW W T Series User Guide 357 Appendix A...
Page 359: ...P 660H HW W T Series User Guide 359 Appendix B...
Page 383: ...P 660H HW W T Series User Guide 383 Appendix D...
Page 387: ...P 660H HW W T Series User Guide 387 Appendix F...
Page 393: ...P 660H HW W T Series User Guide 393 Appendix G...
Page 397: ...P 660H HW W T Series User Guide 397 Appendix H...
Page 400: ...P 660H HW W T Series User Guide Appendix I 400...
Page 401: ...P 660H HW W T Series User Guide 401 Appendix I...
Page 455: ...P 660H HW W T Series User Guide 455 Appendix M...