Prestige 661H/HW Series User’s Guide
Appendix C IP Subnetting
450
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 162
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 Prestige 661H Series
Page 37: ...Prestige 661H HW Series User s Guide 37 List of Tables...
Page 41: ...Prestige 661H HW Series User s Guide 41 Introduction to DSL...
Page 51: ...Prestige 661H HW Series User s Guide 51 Chapter 1 Getting To Know Your Prestige...
Page 67: ...Prestige 661H HW Series User s Guide 67 Chapter 3 Wizard Setup for Internet Access...
Page 81: ...Prestige 661H HW Series User s Guide 81 Chapter 5 LAN Setup...
Page 125: ...Prestige 661H HW Series User s Guide 125 Chapter 8 Network Address Translation NAT Screens...
Page 143: ...Prestige 661H HW Series User s Guide 143 Chapter 11 Firewalls...
Page 165: ...Prestige 661H HW Series User s Guide 165 Chapter 12 Firewall Configuration...
Page 169: ...Prestige 661H HW Series User s Guide 169 Chapter 13 Content Filtering...
Page 175: ...Prestige 661H HW Series User s Guide 175 Chapter 14 Introduction to IPSec...
Page 203: ...Prestige 661H HW Series User s Guide 203 Chapter 15 VPN Screens...
Page 207: ...Prestige 661H HW Series User s Guide 207 Chapter 16 Remote Management Configuration...
Page 221: ...Prestige 661H HW Series User s Guide 221 Chapter 17 Universal Plug and Play UPnP...
Page 227: ...Prestige 661H HW Series User s Guide 227 Chapter 18 Logs Screens...
Page 241: ...Prestige 661H HW Series User s Guide 241 Chapter 19 Media Bandwidth Management Advanced Setup...
Page 265: ...Prestige 661H HW Series User s Guide 265 Chapter 21 Maintenance...
Page 275: ...Prestige 661H HW Series User s Guide 275 Chapter 23 Menu 1 General Setup...
Page 279: ...Prestige 661H HW Series User s Guide 279 Chapter 24 Menu 2 WAN Backup Setup...
Page 283: ...Prestige 661H HW Series User s Guide 283 Chapter 25 Menu 3 LAN Setup...
Page 287: ...Prestige 661H HW Series User s Guide 287 Chapter 26 Wireless LAN Setup...
Page 293: ...Prestige 661H HW Series User s Guide 293 Chapter 27 Internet Access...
Page 307: ...Prestige 661H HW Series User s Guide 307 Chapter 29 Static Route Setup...
Page 311: ...Prestige 661H HW Series User s Guide 311 Chapter 30 Bridging Setup...
Page 327: ...Prestige 661H HW Series User s Guide 327 Chapter 31 Network Address Translation NAT...
Page 343: ...Prestige 661H HW Series User s Guide 343 Chapter 33 Filter Configuration...
Page 363: ...Prestige 661H HW Series User s Guide 363 Chapter 36 System Information and Diagnosis...
Page 381: ...Prestige 661H HW Series User s Guide 381 Chapter 38 System Maintenance...
Page 385: ...Prestige 661H HW Series User s Guide 385 Chapter 39 Remote Management...
Page 395: ...Prestige 661H HW Series User s Guide 395 Chapter 40 IP Policy Routing...
Page 399: ...Prestige 661H HW Series User s Guide 399 Chapter 41 Call Scheduling...
Page 411: ...Prestige 661H HW Series User s Guide 411 Chapter 42 VPN IPSec Setup...
Page 415: ...Prestige 661H HW Series User s Guide 415 Chapter 43 SA Monitor...
Page 431: ...Prestige 661H HW Series User s Guide 431 Appendix A...
Page 451: ...Prestige 661H HW Series User s Guide 451 Appendix C IP Subnetting...
Page 455: ...Prestige 661H HW Series User s Guide 455 Appendix E Command Interpreter...
Page 461: ...Prestige 661H HW Series User s Guide 461 Appendix F Firewall Commands...
Page 464: ...Prestige 661H HW Series User s Guide Appendix G NetBIOS Filter Commands 464...
Page 465: ...Prestige 661H HW Series User s Guide 465 Appendix G NetBIOS Filter Commands...
Page 479: ...Prestige 661H HW Series User s Guide 479 Appendix H VPN Setup...
Page 482: ...Prestige 661H HW Series User s Guide Appendix I Splitters and Microfilters 482...
Page 483: ...Prestige 661H HW Series User s Guide 483 Appendix I Splitters and Microfilters...
Page 537: ...Prestige 661H HW Series User s Guide 537 Appendix M Internal SPTGEN...