An ip address is the unique numerical address of a device in a computer network that uses internet protocol. Preclass workreadwatch all the material at least once before class. In a class b address, the first two octets are the network portion, so the class b example in figure 1 has a major network address of 128. Private ip internet protocol address blocks are the ip addresses most often used for private networks. The first step in planning for ipv4 addressing on your network is to determine which network class is appropriate for your network. Ip addressing basics 3 ip addressing basics ip version 4 ipv4 addresses, which uniquely identify a device on an ip network, are 32 bits in length and are typically communicated in a format known as dotted decimal. The classes created were based on the network size. Class b addresses are used for networks that have between 256 and 65534 hosts. Address classes are defined, in part, based on the number of bits that make.
As with class a, address space for the remaining address. Introduction of classful ip addressing geeksforgeeks. Types, features and classes of ip address interserver tips. Class b has 16384 214 network addresses and 65534 2162 host addresses. However, some numbers in that range are reserved for specific purposes on tcpip. In the preceding topics i introduced the concepts of ip address classes and showed how the classes related to ranges of ip addresses.
On a typical home network, where a device has the ip address. We can use ip address class a, b, and c for subnetting and supernetting in a computer network. The system of ip address classes was developed for the purpose of internet ip. Figure 301 internet protocols span the complete range of osi model layers. Basics of ip addresses in computer networking syed sadat. This document focuses on classes a to c, since classes d. After you have completed this step, you can move to the. The network id is a part of the ip address starting from the left that identifies the specific network on which the device is located. A class a ip address reserves 8 bits for a network with 24 bits dedicated to hosts.
An ip network is a communication network that uses internet protocol ip to send and receive messages between one or more computers. The organization which governs the internet has divided the ip addresses into different classes of the network. For example, for the small number of networks with a very large number of hosts, the class a was created. Internet protocol introduction university of alaska.
After taking this online selfpaced course, youll be able to. Summarizing different classes of ip address with its range and applications. A classful network is a network addressing architecture used in the internet from 1981 until the introduction of classless interdomain routing in 1993. The system of ip address classes was developed for the purpose of internet ip addresses assignment. Ip packets 3 ip address classes some are obsolete network id host id network id host id 816 class a 32 0 class b 10 class c 110 class d 1110 multicast addresses class e 1111. This includes all values from 00000001 to 01111111, or 1 to 127. This becomes necessary as you reconcile the logical address scheme of the internet the abstract world of ip addresses and subnets with the physical networks in use by the real world. Accordingly, class a ip addresses are best used to serve incredibly large networks. For example, for the small number of networks with a very large number of hosts, the class. The success of tcpip as the network protocol of the internet is largely because of its ability to connect together networks of different sizes and systems of different types. Owner of a class is assigned a prefix, gets to pick what.
Divided into a network portion and host portion broken into four octets 1 octet 8 bits. Ip address classifications class bits in network id number of networks bits in host id number of hosts network address range subnet mask a 8 126 24 4,000,000 1. This tutorial explains what ip address is, ip address format, types of ip address, ip address classes, subnet mask, private ip addresses and public ip addresses in detail with examples. Most networks use addresses in one of these ranges. A class b ip address used the two highorder octets to indicate the network address. An ip address is an address used in order to uniquely identify a device on an ip network. An ip address internet protocol address is a numerical representation that uniquely identifies a specific interface on the network. Ip classes typically, the ipv4 space allows us to have addresses between 0. The class of ip address is used to determine the bits used for network id and host id and the number of total networks and hosts possible in that particular class. Ip addressing overview 2 ip addressing overview an ip address uniquely identifies a device on an ip network. Allocating, recycling, and documenting ip addresses and subnets in a net work can get.
A class a address block was designed to support extremely large networks with more than 16. A class a, b, or c tcp ip network can be further divided, or subnetted, by a system administrator. In this model data is organized into tabular structures. General ip addressing guidance while redesigning an existing network. Free class a subnetting tutorial, ip address subnetting. Similarly, any two hosts on different networks must have different network prefixes but may have the same host number. Ip address class a, b and c network and host capacities. Ip is documented in rfc 791 and is the primary networklayer protocol in the internet protocol suite. Understand that rfcs have obsoleted classes, so there really arent any classes anymore, but they are still referred to historically. Internet protocol hierarchy contains several classes of ip addresses to be used efficiently in various situations as per the requirement of hosts per network. There are five different classes of networks, a to e. Ip addresses are divided into five classes that are identified by the value of the first octet the first decimal number.
The address class would define which of the specific bits of the address would be used to identify the network and network identification, the bits to identify the host computer and host. The class c was created for the numerous networks with the small number of hosts. Class, leading bits, size of network number bit field. Fantastic h19301enu pdf demo download, h19301enu cost effective dumps, if youre still studying hard to pass the huawei h19301enu exam, fastrackids help you to achieve your dream, huawei h19. As one of the most commonly used global networks, an ip network.
Hhhhhhhh class c address the first octet of class c ip address has its first 3 bits set to 110, that is. Ip address classes 15441 computer networking class a. Understanding tcpip addressing and subnetting basics. Each class a network address has an 8bit network prefix, with the highest order bit set to 0 zero and a 7bit network number, followed by a 24bit host number. Internet protocol ip theinternetprotocol ip isanetworklayerlayer3protocolthatcontainsaddressinginformation and some control information that enables packets to be routed. Find the class, then the netid, then set hostid 0 example. An ip address is the unique numerical address of a device in a computer network that uses internet protocol for communication.
The ip address is a familiar term for most computer users. The method divides the ip address space for internet protocol. The class of an ip address is determined by the starting bits of the address. Class a addresses are ip addresses that are assigned to network devices, such as computers, and include all addresses in which the first bit of the first octet is set to 0 zero. Network classes in a world with cidr addressing isnt really a thing except as a reference point.