Wide Area Network
A wide area network (WAN) is a geographically distributed private large network that interconnects multiple local area networks (LANs). In an enterprise or corporate, a WAN may consist of connections to a company's headquarters, branch offices, co-location facilities, cloud services and other facilities.
It differs from LAN in case of distance. LAN have a single geographic area or boundary, whereas WAN have several geographic area.
Presently WAN technology has been implemented at various countries and state levels.
The primary component of WAN is the medium of transmission, that service provider assigns whether it could be leased lines or fibre optic cable to cover and connect with each others. It could be circuit switching or packet switching.
Wide area network (WAN) is a telecommunication network that can connect multiple devices from multiple locations and across the globe. It can be assumed as combination of LANs and other networks.
It can be used for day to day business need and for offices having many branches.
Types of WAN Technologies:
The WAN is dependable on various technologies as mentioned below;
Packet Switching, Router, Frame relay, TCP/IP Protocol, Router, SONET/SDH, MPLS, ATM
Organizations connect their LANs to form a WAN is by using the medium called a leased line. A leased line is a direct network connection rented from a large network provider or ISP.
- Digital Signal (DS0): 64Kbps
- T1: 1.544Mbps
- E1: 2.048Mbps
- T3: 44.736Mbps
- OC-3: 155.52Mbps
- OC-12: 622.08Mbps
- OC-48: 2488.32Mbps
Most WAN protocols used are Frame Relay, ISDN, LAPD, HDLC, PPP, PPPoE, Cable, DSL, MPLS and ATM.
- Speed of Internet
- Power Requirement
- Security and standards
- Scalability & Reliability
- Redundancy and Availability
- Feature and Functionality
- Connectivity Model
- ICT devices and Infrastructure
- Monitoring and Control
- Troubleshooting & Fault repair
- Cost and Business Model
-DR
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