network diagram
TRANSCRIPT
Network diagram
NETWORK DEVICE
Network devices are components used to connect computers or other electronic devices together so that they can share files or resources like printers or fax machines.
Basic network devices
• A Computer• A hub• A switch• A router• A bridge• A firewall• A server• Cables
Why to go for a network diagram?
Network diagram: provides• Planning• Security• Flexibility
Physical network topology
Logical network topology
Topology
A computer
Hubs:
Connects multiple Ethernet segments together making them act as a single segment. Works on OSI layer 1.
100baseT hub
Switches
A switch splits the network traffic and sends it to different destinations rather than to all systems on the network. Works on OSI layer 2.
Switch ISDN switch
Switch image Stack of the switch
ROUTERS:
A device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs .Routers use the logic network address such as IP address to make decisions.
Router Wireless Router
FIREWALLA piece of hardware or software put on the network to prevent some communications forbidden by the network policy.
Firewall Router Firewall
server
• A computer on a network or other network device that stores all necessary information and is dedicated to provide a particular service.
Types of servers
Common symbols
Common symbolsCommunication link Wireless Access point
GatewayATM switch
• ATM uses a connection-oriented model in which a virtual circuitmust be established between two endpoints before the actual data exchange begins
• Gateway- a computer or a network that allows or controls access to another computer or network
Common symbols
Common symbolsCoaxial line Fiber optic line tag
Twisted pair cable
• Twisted pair cabling is a type of wiring in which two conductors are twisted together for the purposes of canceling out electromagnetic interference
• Coaxial cable is the kind of copper cable used by cable TV companies between the community antenna and user homes and businesses.
• Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber
Common symbolsRelative database Bridge
Common symbols
Common symbols
Radio tower
Internet cloud
Softwares for network diagram
• Smart draw.• Edraw Network Diagram.• MS Visio.• Nevron diagram designer.• 10 strike network diagram.• Concept draw7.
Automatic generation of the LAN network model
http://weblandesigner.elena.aut.ac.nz/
THANK YOU