WANS and ROUTERSWANS and ROUTERS

Presented byLes McLellan

Dean WhittakerSandy Workman

WANS and ROUTERS

®What is a WAN?®WAN Devices

®WAN Standards®WAN Technologies®What is a Router ?

®Summary

What is a WAN?

®A Data Communications Network®Network Services provided by PTO’s®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

Wide Area Network Devices

®Routers

®WAN Bandwidth Switches

®Modems

®Comms Servers

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

The WAN Physical Layer

®EIA/TIA 232®EIA/TIA 449

®V 24®V 35®X 21

®G 703®EIA-530

Serial Interface Adaptor Cables

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

WAN Technologies

®Dedicated Lines

®Switched Connections® (Circuit Switched)® (Packet Switched)

®Other WAN Technologies

Dedicated Lines

®T1 – 1.544 Mbps

®T3 – 44.736 Mbps

®E1 – 2.048 Mbps

®E3 – 34.368 Mbps

®Other Bandwidths are also available

Switched ConnectionsCircuit Switched

® POTS

® ISDN

Packet Switched

® X 25

® Frame Relay

® ATM

® SMDS

Other WAN Services

®Dial Up Modems

®Cable Modems

®Wireless

ROUTERS

®Internal Components

The Function of a Router

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

WANS and ROUTERS

THE END