Mapa mental
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Review of IP address
- IP addressing is the method used to identify hosts and network devices. As the Internet grew over time and the number of hosts connected to it increased, IP addressing schemes had to adapt to cope with the growthIP addressing is the method used to identify hosts and network devices. As the Internet grew over time and the number of hosts connected to it increased, IP addressing schemes had to adapt to cope with the growth
- To send and receive messages on an IP network, every network host must be assigned a unique 32-bit IP address. Because large binary numbers are difficult for people to read and understand, IP addresses are usually displayed in dotted-decimal notation
- Routers needed to be programmed to look beyond the first 8 bits to identify class B and C networks
- It was decided to divide the networks in a manner that would make it easy for routers and hosts to determine the correct number of network ID bits. The class of a network is indicated by the values of the first few bits of the IP address, called the high-order bits. If the first bit is 0, the network is a Class A, and the first octet represents the network ID. When the first bit is 1, the router examines the second bit. If that bit is 0, the network is a Class B, and the router uses the first 16 bits for the network ID. If the first three bits are 110, it indicates a Class C address. Class C addresses use the first 24 bits, or three octets, to designate the network. Dividing the original 8-bit network into smaller network classes increased the number of available network designations from 256 to over two million.
- To create more possible network designations, the 32-bit address space was organized into five classes. Three of these classes, A, B, and C, provide addresses that can be assigned to individual hosts or networks. The other two classes, D and E, are reserved for multicast and experimental use
- To send and receive messages on an IP network, every network host must be assigned a unique 32-bit IP address. Because large binary numbers are difficult for people to read and understand, IP addresses are usually displayed in dotted-decimal notation
- IP addressing is the method used to identify hosts and network devices. As the Internet grew over time and the number of hosts connected to it increased, IP addressing schemes had to adapt to cope with the growthIP addressing is the method used to identify hosts and network devices. As the Internet grew over time and the number of hosts connected to it increased, IP addressing schemes had to adapt to cope with the growth
Subnetting a network
- When an address is identified by class, the number of bits that make up the network ID and the number of bits that make up the host ID are known. The default subnet masks for the network classes are: Class A 255.0.0.0 Class B 255.255.0.0 Class C 255.255.255.0
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- Descrição
- Mapa Mental sobre Enter text here, criado por Tobi_Adekunle em 25-02-2014.
- Criado por
- Tobi_Adekunle
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