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Prestige 2602R Series User’s Guide
Appendix D IP Subnetting
383
Since the mask is always a continuous number of ones beginning from the left, followed by a
continuous number of zeros for the remainder of the 32 bit mask, you can simply specify the
number of ones instead of writing the value of each octet. This is usually specified by writing
a “/” followed by the number of bits in the mask after the address.
For example, 192.1.1.0 /25 is equivalent to saying 192.1.1.0 with mask 255.255.255.128.
The following table shows all possible subnet masks for a class “C” address using both
notations.
The first mask shown is the class “C” natural mask. Normally if no mask is specified it is
understood that the natural mask is being used.
Example: Two Subnets
As an example, you have a class “C” address 192.168.1.0 with subnet mask of 255.255.255.0.
The first three octets of the address make up the network number (class “C”). You want to
have two separate networks.
Divide the network 192.168.1.0 into two separate subnets by converting one of the host ID bits
of the IP address to a network number bit. The “borrowed” host ID bit can be either “0” or “1”
thus giving two subnets; 192.168.1.0 with mask 255.255.255.128 and 192.168.1.128 with
mask 255.255.255.128.
Table 126
Alternative Subnet Mask Notation
SUBNET MASK IP ADDRESS
SUBNET MASK “1” BITS
LAST OCTET BIT VALUE
255.255.255.0
/24
0000 0000
255.255.255.128
/25
1000 0000
255.255.255.192
/26
1100 0000
255.255.255.224
/27
1110 0000
255.255.255.240
/28
1111 0000
255.255.255.248
/29
1111 1000
255.255.255.252
/30
1111 1100
Table 127
Two Subnets Example
NETWORK NUMBER
HOST ID
IP Address
192.168.1.
0
IP Address (Binary)
11000000.10101000.00000001.
00000000
Subnet Mask
255.255.255.
0
Subnet Mask (Binary)
11111111.11111111.11111111.
00000000
Содержание Prestige 2602R Series
Страница 1: ...Prestige 2602R Series ADSL VoIP IAD User s Guide Version 3 40 7 2005...
Страница 2: ......
Страница 23: ...Prestige 2602R Series User s Guide Table of Contents 23 Index 439...
Страница 24: ...Prestige 2602R Series User s Guide 24 Table of Contents...
Страница 32: ...Prestige 2602R Series User s Guide 32 List of Figures...
Страница 40: ...Prestige 2602R Series User s Guide 40 Introduction to DSL...
Страница 50: ...Prestige 2602R Series User s Guide 50 Chapter 1 Getting To Know Your Prestige...
Страница 56: ...Prestige 2602R Series User s Guide 56 Chapter 2 Introducing the Web Configurator...
Страница 90: ...Prestige 2602R Series User s Guide 90 Chapter 5 WAN Setup...
Страница 102: ...Prestige 2602R Series User s Guide 102 Chapter 6 Network Address Translation NAT Screens...
Страница 134: ...Prestige 2602R Series User s Guide 134 Chapter 11 Time and Date...
Страница 148: ...Prestige 2602R Series User s Guide 148 Chapter 12 Firewalls...
Страница 170: ...Prestige 2602R Series User s Guide 170 Chapter 13 Firewall Configuration...
Страница 178: ...Prestige 2602R Series User s Guide 178 Chapter 15 Remote Management Configuration...
Страница 192: ...Prestige 2602R Series User s Guide 192 Chapter 16 Universal Plug and Play UPnP...
Страница 214: ...Prestige 2602R Series User s Guide 214 Chapter 19 Maintenance Figure 104 System Status...
Страница 224: ...Prestige 2602R Series User s Guide 224 Chapter 19 Maintenance...
Страница 234: ...Prestige 2602R Series User s Guide 234 Chapter 21 Menu 1 General Setup...
Страница 238: ...Prestige 2602R Series User s Guide 238 Chapter 22 Menu 2 WAN Backup Setup...
Страница 242: ...Prestige 2602R Series User s Guide 242 Chapter 23 Menu 3 LAN Setup...
Страница 248: ...Prestige 2602R Series User s Guide 248 Chapter 24 Internet Access...
Страница 262: ...Prestige 2602R Series User s Guide 262 Chapter 26 Static Route Setup...
Страница 266: ...Prestige 2602R Series User s Guide 266 Chapter 27 Bridging Setup...
Страница 282: ...Prestige 2602R Series User s Guide 282 Chapter 28 Network Address Translation NAT...
Страница 312: ...Prestige 2602R Series User s Guide 312 Chapter 32 System Information and Diagnosis...
Страница 324: ...Prestige 2602R Series User s Guide 324 Chapter 33 Firmware and Configuration File Maintenance...
Страница 330: ...Prestige 2602R Series User s Guide 330 Chapter 34 System Maintenance...
Страница 334: ...Prestige 2602R Series User s Guide 334 Chapter 35 Remote Management...
Страница 346: ...Prestige 2602R Series User s Guide 346 Chapter 37 Call Scheduling...
Страница 358: ...Prestige 2602R Series User s Guide 358 Chapter 38 Troubleshooting...
Страница 388: ...Prestige 2602R Series User s Guide 388 Appendix D IP Subnetting...
Страница 392: ...Prestige 2602R Series User s Guide 392 Appendix E Triangle Route...
Страница 394: ...Prestige 2602R Series User s Guide 394 Appendix F SIP Passthrough...
Страница 420: ...Prestige 2602R Series User s Guide 420 Appendix G Internal SPTGEN...
Страница 422: ...Prestige 2602R Series User s Guide 422 Appendix H Command Interpreter...
Страница 424: ...Prestige 2602R Series User s Guide 424 Appendix I Firewall Commands...
Страница 438: ...Prestige 2602R Series User s Guide 438 Appendix K Log Descriptions...