cisco networking academy chabot college elec 99.05 network devices
TRANSCRIPT
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Chabot CollegeChabot College
ELEC 99.05ELEC 99.05Network Devices
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Network DevicesNetwork Devices
• Every type of network device was developed to solve a problem.
• Network devices operate at different layers of the OSI model.
• Are represented by Cisco icons.
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
RepeaterRepeater
• Problem: On a long wire, signal gets weak.• Function: to strengthen signal & extend it to a
new media segment. • Layer 1 device - works with bits.
• Animation
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
HubHub• Problem: workgroups need shared access to
printers, files, etc.• Function: to provide concentrated connections for
workgroups.• Hub is a multi-port repeater.• Layer 1 device - works with bits.
• Animation
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
BridgeBridge
• Problem: too much traffic jams network.• Function: to segment traffic and contain
traffic jams.• Layer 2 device - works with MAC
addresses.
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
SwitchSwitch• Problem: shared access often results in
traffic jams.• Function: to concentrate connections &
segment traffic.• Combines advantages of hub & bridge.• Switch is a multi-port bridge.• Layer 2 device - works with MAC
addresses.
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
RouterRouter• Problem: How to find network path from
Hayward to New York.• Function: to direct traffic over multiple paths.
– Also:• to contain traffic jams• to connect different network topologies
• Layer 3 device - works with IP addresses.
• Animation
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Net Devices Solve ProblemsNet Devices Solve ProblemsDevice Function
Repeater
To strengthen signal & extend it to a newmedia segment.
Hub
To provide concentrated connections forworkgroups.
Bridge
To segment traffic & contain traffic jams.
Switch
To concentrate connections & segment traffic.
Router
To direct traffic over multiple paths.
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
Devices Function at LayersDevices Function at Layers
D evice W o rks W ith
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
QuizQuiz
• What’s this?• Repeater
• Which OSI Layer?• Layer 1
• Works with?• Bits - 10010101
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
QuizQuiz
• What’s this?• Hub
• Which OSI Layer?• Layer 1
• Works with?• Bits - 10010101
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
QuizQuiz
• What’s this?• Bridge
• Which OSI Layer?• Layer 2
• Works with?• MAC Addresses - 00-C0-F0-56-BD-71
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
QuizQuiz
• What’s this?• Switch
• Which OSI Layer?• Layer 2
• Works with?• MAC Addresses - 00-C0-F0-56-BD-71
CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY
QuizQuiz
• What’s this?• Router
• Which OSI Layer?• Layer 3
• Works with?• IP Addresses - 172.28.118.240