WANS and ROUTERS

1
WANS and ROUTERS

• Presented by
• Les McLellan
• Dean Whittaker
• Sandy Workman

2
WANS and ROUTERS

• What is a WAN?
• WAN Devices
• WAN Standards
• WAN Technologies
• What is a Router ?
• Summary

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What is a WAN?

• A Data Communications Network
• Network Services provided by PTOs
• Relatively broad geographic area
• Serial connections of various types and speeds
• Provide full and part time connectivity
• Technologies function at the lower three layers
  of the OSI Model

4
Wide Area Network Devices

• Routers
• WAN Bandwidth Switches
• Modems
• Comms Servers

5
WAN Standards

• Defined and Managed by recognized authorities
• WAN s use the OSI reference Model
• WAN Physical Layer standards specify the
  interface
• WAN data Link protocols

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The WAN Physical Layer

• EIA/TIA 232
• EIA/TIA 449
• V 24
• V 35
• X 21
• G 703
• EIA-530

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Serial Interface Adaptor Cables
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The WAN Data Link Layer

• High Level Data Link Control (HDLC)
• Frame Relay
• Point to Point Protocol (PPP)
• Serial Line Interface Protocol (SLIP)
• Cisco / IETF
• ISDN

9
WAN Technologies

• Dedicated Lines
• Switched Connections
• (Circuit Switched)
• (Packet Switched)
• Other WAN Technologies

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Dedicated Lines

• T1 1.544 Mbps
• T3 44.736 Mbps
• E1 2.048 Mbps
• E3 34.368 Mbps
• Other Bandwidths are also available

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Switched Connections

• Circuit Switched
• POTS
• ISDN

• Packet Switched
• X 25
• Frame Relay
• ATM
• SMDS

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Other WAN Services

• Dial Up Modems
• Cable Modems
• Wireless

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ROUTERS

• Internal Components

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The Function of a Router
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WANS and ROUTERS

• Summary
• Data Communication Networks that operate over a
  large area using Serial Links
• Routers are active intelligent nodes used to
  manage a network

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WANS and ROUTERS

• THE END