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BCM50e Integrated Router Configuration - Advanced
Appendix G
IP subnetting
IP addressing
Routers route based on the network number. The router that delivers the data
packet to the correct destination host uses the host ID.
IP classes
An IP address is made up of four octets (eight bits), written in dotted decimal
notation, for example, 192.168.1.1. IP addresses are categorized into different
classes. The class of an address depends on the value of its first octet.
•
Class A addresses have a 0 in the left-most bit. In a class A address, the first
octet is the network number and the remaining three octets make up the host
ID.
•
Class B addresses have a 1 in the left-most bit and a 0 in the next left most bit.
In a class B address, the first two octets make up the network number and the
two remaining octets make up the host ID.
•
Class C addresses begin (starting from the left) with 1 1 0. In a class C
address, the first three octets make up the network number and the last octet is
the host ID.
•
Class D addresses begin with 1 1 1 0. Class D addresses are used for
multicasting. (There is also a class “E” address, which is reserved for future
use.)
Содержание BCM50e
Страница 18: ...18 Figures N0115789 ...
Страница 22: ...22 Tables N0115789 ...
Страница 28: ...28 Preface N0115789 ...
Страница 38: ...38 Chapter 1 Getting to know your BCM50e Integrated Router N0115789 ...
Страница 44: ...44 Chapter 2 Introducing the SMT N0115789 SMT menus at a glance Figure 6 SMT overview ...
Страница 60: ...60 Chapter 4 LAN setup N0115789 ...
Страница 82: ...82 Chapter 6 Remote Node setup N0115789 ...
Страница 86: ...86 Chapter 7 IP Static Route Setup N0115789 ...
Страница 114: ...114 Chapter 9 Network Address Translation NAT N0115789 ...
Страница 136: ...136 Chapter 11 Filter configuration N0115789 ...
Страница 140: ...140 Chapter 12 SNMP Configuration N0115789 ...
Страница 144: ...144 Chapter 13 System security N0115789 ...
Страница 172: ...172 Chapter 15 Firmware and configuration file maintenance N0115789 ...
Страница 186: ...186 Chapter 17 Remote Management N0115789 ...
Страница 206: ...206 Appendix B Triangle Route N0115789 ...
Страница 226: ...226 Appendix D PPPoE N0115789 ...
Страница 232: ...232 Appendix F N0115789 ...
Страница 242: ...242 Appendix G IP subnetting N0115789 ...
Страница 304: ...304 Appendix K Log descriptions N0115789 ...
Страница 306: ...306 Appendix L Brute force password guessing protection N0115789 ...