IP Addressing in Computer Networks: Unique Identifiers and Hierarchy, Slides of Computer Networks

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COMPUTER

NETWORKS

Lecture-

Review Lecture 23

Motivation for Internetworking

The concept of Universal Service

Internetworking

Physical Connections using Routers

Internet Architecture

The Virtual Network

TCP/IP Protocol Suite and Layering

The IP Addressing Scheme

 An Internet Address (IP Address) is a unique 32-bit binary number assigned to a host and used for all communication with the host.

 Each packet sent across an internet contains the 32-bit IP address of the sender (source) as well as the intended recipient (destination).

The IP Address Hierarchy

 Each 32-bit IP address is divided into two parts:

• Prefix: identifies the physical network to which the computers are attached.
• Suffix: identifies an individual computer on the network.

The IP Address Hierarchy

 The IP address hierarchy guarantees two important principles:

• Each computer is assigned a unique address.
• Although network number assignment must be coordinated globally, suffices can be assigned locally.

Original Classes Of IP Addresses

 The original IP address scheme divides host addresses into three primary classes.

 The class of an address determines the boundary between the network prefix and suffix.

Summary

Addresses for Virtual Internet

The IP addressing Scheme

The Address Hierarchy

Original Classes of IP Addresses