WAN

WAN

1. Why Choose a WAN?

   • Operates beyond the geographic scope of a LAN
   • Used to interconnect the enterprise LAN to remote LANs in branch sites and telecommuter sites
   • Owned by a service provider
   • Organization must pay a fee to use the provider’s services to connect sites

2. Are WANs Necessary?

   • Businesses require communication among geographically separated sites.
   • Home computer users must send and receive data across increasingly larger distances.

3. Purpose of WANs

   • Evolving Networks
   • Small Office
   • Campus Network
   • Branch Networks
     • Branch Networks (cont.)
   • Distributed Networks
     • Distributed Networks (cont.)

4. WAN Operations

   • WAN Devices
   • Circuit Switching
   • Packet Switching

5. WAN Services

   • WAN Link Connection Options
   • Service-Provided Network

6. Private WAN Infrastructures

   • Leased Lines
   • Dialup
   • ISDN
   • Frame Relay
   • ATM
   • Ethernet WAN
   • MPLS
   • VSAT
   • DSL
   • Cable
   • Wireless
   • 3G/4G Cellular
   • VPN Technology