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Prestige 660RU-Tx Series User’s Guide
Appendix C
262
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.
Table 86
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 87
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 ADSL2+ Ethernet/USB Gateway 660RU-Tx Series
Страница 1: ...Prestige 660RU Tx Series ADSL2 Ethernet USB Gateway User s Guide Version 3 40 January 2005 ...
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Страница 22: ...Prestige 660RU Tx Series User s Guide 21 ...
Страница 26: ...Prestige 660RU Tx Series User s Guide 25 ...
Страница 30: ...Prestige 660RU Tx Series User s Guide 29 Introduction to DSL ...
Страница 38: ...Prestige 660RU Tx Series User s Guide 37 Chapter 1 Getting To Know Your Prestige ...
Страница 56: ...Prestige 660RU Tx Series User s Guide 55 Chapter 4 Password Setup ...
Страница 64: ...Prestige 660RU Tx Series User s Guide 63 Chapter 5 LAN Setup ...
Страница 74: ...Prestige 660RU Tx Series User s Guide 73 Chapter 6 WAN Setup ...
Страница 86: ...Prestige 660RU Tx Series User s Guide 85 Chapter 7 Network Address Translation NAT Screens ...
Страница 94: ...Prestige 660RU Tx Series User s Guide 93 Chapter 10 Remote Management Configuration ...
Страница 108: ...Prestige 660RU Tx Series User s Guide 107 Chapter 11 Universal Plug and Play UPnP ...
Страница 124: ...Prestige 660RU Tx Series User s Guide 123 Chapter 13 Introducing the SMT ...
Страница 128: ...Prestige 660RU Tx Series User s Guide 127 Chapter 14 Menu 1 General Setup ...
Страница 132: ...Prestige 660RU Tx Series User s Guide 131 Chapter 15 Menu 2 WAN Backup Setup ...
Страница 136: ...Prestige 660RU Tx Series User s Guide 135 Chapter 16 Menu 3 LAN Setup ...
Страница 158: ...Prestige 660RU Tx Series User s Guide 157 Chapter 19 Static Route Setup ...
Страница 162: ...Prestige 660RU Tx Series User s Guide 161 Chapter 20 Bridging Setup ...
Страница 178: ...Prestige 660RU Tx Series User s Guide 177 Chapter 21 Network Address Translation NAT ...
Страница 206: ...Prestige 660RU Tx Series User s Guide 205 Chapter 24 System Information and Diagnosis ...
Страница 218: ...Prestige 660RU Tx Series User s Guide 217 Chapter 25 Firmware and Configuration File Maintenance ...
Страница 224: ...Prestige 660RU Tx Series User s Guide 223 Chapter 26 System Maintenance ...
Страница 228: ...Prestige 660RU Tx Series User s Guide 227 Chapter 27 Remote Management ...
Страница 238: ...Prestige 660RU Tx Series User s Guide 237 Chapter 28 IP Policy Routing ...
Страница 242: ...Prestige 660RU Tx Series User s Guide 241 Chapter 29 Call Scheduling ...
Страница 260: ...Prestige 660RU Tx Series User s Guide 259 Appendix B ...
Страница 268: ...Prestige 660RU Tx Series User s Guide 267 Appendix C ...
Страница 272: ...Prestige 660RU Tx Series User s Guide 271 Appendix E ...
Страница 274: ...Prestige 660RU Tx Series User s Guide 273 Appendix F ...
Страница 280: ...Prestige 660RU Tx Series User s Guide 279 Appendix G ...