unit-1 intro to communication networks
Post on 13-Sep-2014
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DESCRIPTION
communication networking basics are explained here in the presentationTRANSCRIPT
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INTRODUCTION TOCOMPUTER NETWORKS
VINAYAK M.UMALE
Department of Electronics & Telecommunication EngineeringShri sant Gajanan Maharaj college of Engineering
(Ph : 07265 252116, Email : [email protected])
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About MyselfAbout Myself
My self Vinayak M. Umale, Associate Professor, Electronics and telecommunication Engineering Dept.
SSGMCE has one of the largest networks in the Shegaon.
SSGMCE Campus Network now has 2500 nodes providing connectivity to more than 2500 users in Academic Departments, Student Hostels and Residences.
SSGMCE has 18 Mbps Internet Connectivity.
All application servers (Mail, DNS, Proxy Caching, Web etc.) are maintained in-house.
B.Tech (1988) and M.Tech (1997) from IIT Kharagpur
Working in SSGMCE, Shegaon for more than 22 years
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Course ContentCourse Content
Lecture 1:
Overview of the Course and Network Functions
Lecture 2,3:
Types of Networks, LAN, MAN, WAN
Lecture 4,5:
LAN Topologies-Mesh, Star, Bus, Ring
Lecture 6,7:
Layer Architecture: OSI Model& TCP/IP Model :
Lecture 8,9:
Switching Techniques-Circuit, Packet, Message, cell
VMUmale
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Course Content
Course Content
Lecture 10, 11:
Peer to Peer Protocol, End to End, Hop to Hop Connectivity
Lecture 12, 13, 14 : Flow Control: Need, Stop& wait flow control, Sliding window flow control
Lecture 15,16, 17: Error Control (ARQ)-Stop and wait ARQGo-Back-N ARQSelective Repeat ARQ
Lecture 18:
Standard Data Link Control Protocol-HDLC
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Course Content
Course Content
Lecture 19:
LAN Architecture- LLC and MAC
Lecture 20,21: Random Access Techniques- Pure Aloha
system and Slotted Aloha System
Lecture 22, 23: Contention Techniques-CSMA, CSMA/CD
Lecture 24, 25:
Control Access Techniques- Token Bus, TokenRing, Polling, FDDI
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Course Content
Course Content
Lecture 26,27:
Networking Devices
Lecture 28,29: Routing Algorithms
Lecture 30, 31: Least Cost Algorithms
Lecture 32:
Traffic Control
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Course Content
Course Content
Lecture 33,34, 35:
ATM Network
Lecture 36: Frame Relay Network
Lecture 37, 38: ISDN & BISDN
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Course Content
Course Content
Lecture 39:
Overview of TCP/IP-TCP & UDP Frame Format
Lecture 40, 41, 42: Internet Protocol and IP addressing
issues
Lecture 43, 44: Internet Protocols: ICMP, ARP, RARP
Lecture 45Internet Protocols Datagram, Datagram
Forwarding
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References
Books
Behrouz A. Forouzan, Data Communication and Networking, TMH
Andrew S. Tanenbaum, Computer Network, Prentice-Hall
Willam stalling,Data and computer communication, MM
Doughlas E. Comer, Computer Networks and Internet
http://www.cisco.com/public/support/tac/documentation.html
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Grading Guidelines
Grading
Two ClassTest Exams: 5% each
TEC: 5%
Attendance: 5%
End Exam: 80%
Minimum 75% attendance and minimum 50% marks are necessary to clear the course.
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Introduction to Computer Networks
INTRODUCTION TO COMPUTER NETWORKS
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Computer Networks
Computer network connects two or more autonomous computers.
The computers can be geographically located anywhere.
Introduction to Computer Networks
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LAN, MAN & WAN
Introduction to Computer Networks
Network in small geographical Area (Room, Building or a Campus) is called LAN (Local Area Network)
Network in a City is call MAN (Metropolitan Area Network)
Network spread geographically (Country or across Globe) is called WAN (Wide Area Network)
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Applications of Networks
Introduction to Computer Networks
Resource SharingHardware (computing resources, disks, printers)Software (application software)
Information SharingEasy accessibility from anywhere (files, databases)Search Capability (WWW)
CommunicationEmailMessage broadcast
Remote computing
Distributed processing (GRID Computing)
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Network Topology
The network topology defines the way in which computers, printers, and other devices are connected. A network topology describes the layout of the wire and devices as well as the paths used by data transmissions.
Introduction to Computer Networks
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Bus Topology
Commonly referred to as a linear bus, all the devices on a bus topology are connected by one single cable.
Introduction to Computer Networks
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Star & Tree Topology
Introduction to Computer Networks
The star topology is the most commonly used architecture in Ethernet LANs.
When installed, the star topology resembles spokes in a bicycle wheel.
Larger networks use the extended star topology also called tree topology. When used with network devices that filter frames or packets, like bridges, switches, and routers, this topology significantly reduces the traffic on the wires by sending packets only to the wires of the destination host.
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Ring Topology
Introduction to Computer Networks
A frame travels around the ring, stopping at each node. If a node wants to transmit data, it adds the data as well as the destination address to the frame.
The frame then continues around the ring until it finds the destination node, which takes the data out of the frame.
Single ring – All the devices on the network share a single cable
Dual ring – The dual ring topology allows data to be sent in both directions.
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Mesh Topology
The mesh topology connects all devices (nodes) to each other for redundancy and fault tolerance.
It is used in WANs to interconnect LANs and for mission critical networks like those used by banks and financial institutions.
Implementing the mesh topology is expensive and difficult.
Introduction to Computer Networks
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Network Components
Introduction to Computer Networks
Physical Media
Interconnecting Devices
Computers
Networking Software
Applications
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Networking Media
Networking media can be defined simply as the means by which signals (data) are sent from one computer to another (either by cable or wireless means).
Introduction to Computer Networks
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Networking Devices
Introduction to Computer Networks
HUB, Switches, Routers, Wireless Access Points, Modems etc.
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Computers: Clients and ServersIn a client/server network arrangement, network services are located in a dedicated computer whose only function is to respond to the requests of clients.
The server contains the file, print, application, security, and other services in a central computer that is continuously available to respond to client requests.
Introduction to Computer Networks
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Networking Protocol: TCP/IP
Introduction to Computer Networks
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Applications
E-mailSearchable Data (Web Sites)E-CommerceNews GroupsInternet Telephony (VoIP)Video ConferencingChat GroupsInstant Messengers Internet Radio
Introduction to Computer Networks
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THANKS A LOT
Introduction to Computer Networks
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Course Content
Course Content
Internet Protocol (IP) and IP Addressing,Demo and Practice of Setting up Subnets and IP Address,,Routing, VLAN, TCP and UDP, SNMP, Natting, Firewall and VPN, Internet and Internet Applications (DNS, Email, Web..) , Cisco Basics, Cisco Switch and Router Configuration, Lab- Demo and Practice of Cisco Switch Configuration, Lab: Demo and Practice of Cisco Router Configuration, DNS & Web Server Setup on Linux, Lab: Demo and Practice of DNS and Web Server Setup, Enterprise Network Implementation, Mail Server, Proxy Server & Firewall Setup on Linux, Lab 8: Demo and Practice of Mail Server , Proxy Server and Firewall Setup
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Course Content
Course Content
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Course Content
Course Content