Network Topology
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Transcript of Network Topology
SEMINAR ON
NETWORK TOPOLOGY
NAME:ABHINAV SINGH BRANCH:CSROLL NO:02
ABSTRACT
• Although the computer industry is youngest ,the major part of this spectacular progress is contributed by networking.To get acquainted with networks you must know about:
Network topologies
• INTRODUCTION• CONTENT• Hubs• Switch• Advantages & disadvantages
INTRODUCTION• WHAT IS IT?
A Network is a set of devices connected by media links. These devices are termed as Nodes. A Node can be any device which is capable of sending and/or receiving data from/to other Nodes. The links are called communication channels.
CONTENT
MAIN MENU SUMMARY EXITEXERCISEOBJECTIVE
Definition of Network Topology
Types of Network Topology
Differentiation Between theTypes of Network Topology
DEFINITION
What is a Topology ?
The physical topology of a network refers to the configuration of cables, computers and other peripherals.
TYPES OF NETWORK TOPOLOGY
Three commonly used network topologies are:-
Bus network.
Ring network.
Star network.
STAR TOPOLOGY
All devices connect to acentral device, calledhub.
All data transferredfrom one computer toanother passes through hub.
STAR TOPOLOGY
BUS TOPOLOGY
All computers and devices connected to central cable or bus.
Consists of a main run of cable with a terminator at each end.
Popular on LANs because they are inexpensive and easy to install.
BUS TOPOLOGY
RING TOPOLOGY
Cable forms closed ring or loop, with all computers and devices arranged along ring.
Data travels from device to device around entire ring, in one direction.
Primarily is used for LANs, but also is used in WANs.
RING TOPOLOGY
ADVANTAGES :•NO TRAFFIC PROBLEMS
•PRIVACY AND SECURITY
• EASY FAULT IDENTIFICATION & ISOLATION
•ROBUST
DISADVANTAGES:• MORE CABLES REQUIRED
• MORE SPACE CONSUMPTION
• EXPENSIVE HARDWARE
• MORE I/O NODES
• DIFFICULT INSTALLATION & CONFIGURATION
TREE TOPOLOGY
Server
Types of HubsPassive Hubs:- It simply receive data
from one port of the hub and send it to the other ports.
Active:- It provide the same functionality of a passive hubs with an additional features . Active hubs repeating the data while resending it to all of the ports.
Switches• A common solution to traffic
problems is to implement switches.
• Switches also referred to as multi port bridges.
• Automatically determines the MAC address of the device connect to each port of the switch.
DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY
WHAT IS DIFFERENTIATION BETWEEN THE THREE OF NETWORK TOPOLOGY?
DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY
http://en.wikipedia.org/wiki/Network_topology
http://home.att.net/~charlie.net/cMctopology.htm
DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY
ADVANTAGE DISADVANTAGE
1) Easy to install and wire. 1) Requires more cable length
than a linear topology. 2) Security can be implemented in the hub/switch.
2) If the hub or concentrator fails, nodes attached are disabled.
3) Easy to detect faults and to remove parts.
3) More expensive than linear bus topologies because of the cost of the concentrators.
STAR
DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY
ADVANTAGE DISADVANTAGE
1) Easy to connect computer or peripheral to a linear bus.
1) Entire network shuts down if there is a break in the main cable.
2) Requires less cable length than a star topology.
2) Terminators are required at both ends of the backbone cable.
3) Difficult to identify the problem if the entire network shuts down.
BUS
DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY
ADVANTAGE DISADVANTAGE
1) Data is quickly transferred without a ‘bottle neck’.
1) Data packets must pass through every computer
between the sender and recipient therefore, this makes it slower.
2) The transmission of data is relatively simple as packets travel in one direction only.
2) If any of the nodes fail then the ring is broken and data cannot be transmitted successfully. 3) It is difficult to troubleshoot the ring.
RING
SUMMARY
BUS TOPOLOGY
DEFINITION•All computers
and devices connected to central cable
ADVANTAGE•Easy to connect a
computer or peripheral to a linear
bus.
•Requires less cable length than
a star topology.
DISADVANTAGE
•Entire network shuts down if
there is a break in the main cable.
•Terminators are required at both
ends of the backbone cable.
•Difficult to identify the problem
if the entire network shuts down.
SUMMARYRING TOPOLOGY
DEFINITION•Cable forms closed ring or loop, with all
computers and devices arranged
along ring.
ADVANTAGE•Data is quickly
transferred without a ‘bottle neck’.
•The transmission of data is relatively
simple as packets travel in one direction
only.
DISADVANTAGE
•Data packets must pass through every computer between the sender and recipient therefore, this
makes it slower.
•If any of the nodes fail then the ring is broken
and data cannot be transmitted successfully.
•It is difficult to troubleshoot
the ring.
SUMMARY
DEFINITION•All devices connect to a
central device, called hub.
ADVANTAGE•Easy to install and
wire.
•Security can be implemented
in the hub/switch.
DISADVANTAGE•Requires more cable
length than a linear topology.
If the hub or concentrator fails,
nodes attached are disabled.
More expensive than linear bus topologies because of the cost of
the concentrators.
STAR TOPOLOGY
•Easy to detect faults and to
remove parts
Thank You !!!!t