P-2608HWL-Dx Series User’s Guide
Appendix C IP Addresses and Subnetting
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P P E N D I X
C
IP Addresses and Subnetting
This appendix introduces IP addresses, IP address classes and subnet masks. You use subnet
masks to subdivide a network into smaller logical networks.
Introduction to IP Addresses
An IP address has two parts: the network number and the host ID. Routers use the network
number to send packets to the correct network, while the host ID identifies a single device on
the network.
An IP address is made up of four octets, written in dotted decimal notation, for example,
192.168.1.1. (An octet is an 8-digit binary number. Therefore, each octet has a possible range
of 00000000 to 11111111 in binary, or 0 to 255 in decimal.)
There are several classes of IP addresses. The first network number (192 in the above
example) defines the class of IP address. These are defined as follows:
• Class A: 0 to 127
• Class B: 128 to 191
• Class C: 192 to 223
• Class D: 224 to 239
• Class E:
240 to 255
IP Address Classes and Hosts
The class of an IP address determines the number of hosts you can have on your network.
• In a class A address the first octet is the network number, and the remaining three octets
are the host ID.
• In a class B address the first two octets make up the network number, and the two
remaining octets make up the host ID.
• In a class C address the first three octets make up the network number, and the last octet
is the host ID.
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Страница 44: ...P 2608HWL Dx Series User s Guide 44 Chapter 1 Getting To Know the ZyXEL Device ...
Страница 66: ...P 2608HWL Dx Series User s Guide 66 Chapter 3 Internet and Wireless Setup Wizard ...
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Страница 78: ...P 2608HWL Dx Series User s Guide 78 Chapter 5 Bandwidth Management Wizard ...
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Страница 206: ...P 2608HWL Dx Series User s Guide 206 Chapter 16 Firewall Configuration Figure 107 Firewall Edit Rule ...
Страница 220: ...P 2608HWL Dx Series User s Guide 220 Chapter 17 Content Filtering ...
Страница 257: ...P 2608HWL Dx Series User s Guide Chapter 19 Certificates 257 Figure 138 My Certificate Details ...
Страница 268: ...P 2608HWL Dx Series User s Guide 268 Chapter 19 Certificates Figure 146 Trusted Remote Host Details ...
Страница 276: ...P 2608HWL Dx Series User s Guide 276 Chapter 20 Static Route ...
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Страница 292: ...P 2608HWL Dx Series User s Guide 292 Chapter 22 Dynamic DNS Setup ...
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Страница 318: ...P 2608HWL Dx Series User s Guide 318 Chapter 24 Universal Plug and Play UPnP ...
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Страница 348: ...P 2608HWL Dx Series User s Guide 348 Chapter 28 Diagnostic ...
Страница 360: ...P 2608HWL Dx Series User s Guide 360 Chapter 29 Troubleshooting ...
Страница 378: ...P 2608HWL Dx Series User s Guide 378 Appendix B Setting up Your Computer s IP Address ...
Страница 402: ...P 2608HWL Dx Series User s Guide 402 Appendix F Triangle Route ...
Страница 440: ...P 2608HWL Dx Series User s Guide 440 Appendix H Internal SPTGEN ...