A wide area network wan is a telecommunications network that extends over a large. In this chapter, some fundamental concepts and terms used in the evolving language of internetworking are addressed. However, wan appliances can also be application aware in that they are capable of analyzing application protocol streams and manipulating their behavior according to policy. Concentrates on an introduction to wide area networking wans. While there remains a place for wan optimization technology in a world of highbandwidth. Cisco ios widearea networking command reference pdf.
What appropriate wan technologies are used to meet. The wan is a place in the network that aggregates various types, speeds, and links running a disparate set of protocols together crossing metropolitan, state, and even country boundaries. The wide area network wan is a critically important topic for number of reasons. Recall that wan technologies operate at both physical and datalink layers of the osi models, and that higherlayer protocols such as ip are encapsulated when sent across the wan link. Wan originally formed by tele providers, nowadays, provided by internet service providers isp. Vpls networks offer the ability of a meshed network config any to any, so all sites can communicate with each other, increasing network continuity. An introduction to rfid technology article pdf available in communications and network 0203. Wan technologies generally function at layers 1 through 3 of the osi tcpip reference model, which is why most network engineers also function at this level. Centralized orchestrationanalytics offering unprecedented wan and application performance visibility. Pdf an introduction to wireless technologies part 1. Multiple types of wan technologies mpls vpn, internet, evpl are supported on a single port and circuit.
A wan uses data links provided by carrier services to access the internet and connect different locations of an organization to each other. A can, for example, may have a localized backbone of a wan technology, which connects. This manual contains commands for configuring the following technologies and features. Learn how you can improve your wide area network wan through link aggregation. The difference between circuit switching, packet switching, and cell switching. Routing and management of the vpls network can be done by the customer or provider. Installation and configuration of wan technologies wan.
Some examples of wan technologies like leased lines, framerelay, dsl, cable, and ethernet. A wan is usually terminated on a cisco devices serial interface. The company is looking to enable direct internet access from their branch offices but they are concerned about security. Internet access needtochange currently backhauls over half of its internet traffic to its data center in salt lake city.
The moment packets hit the routers internet interface, they become at what is called wan. An introduction to wireless technologies part 1 content. Introduction to wan technologies with lab 12044 1 of. The terminology that is used when talking about the wan physical layer. One primary difference between a wan and a lan is that a company or organization must subscribe to an outside wan service provider to use wan carrier network services. Introducing smartwan b y r o s e d e f r e m e r y c o n t r i b u t o r if you are looking for a technology overview for sd wan, look no further. Serial interfaces support a wide variety of wan encapsulation types, which must. Wan technologies followed by information on the selected wan of focus a hybrid wan.
Upload your document and click the submit to dropbox button. Different types of wan technologies data networking. Northcentral universitys academic integrity policy. Introduction to internetworking 15 1 introduction to internetworking this chapter works with the next six chapters to act as a foundation for the technology discussions that follow. Understanding wan technologies and why networks were divided to local area networks lan and wide area network wan will help you distinguish among what i call packet carriers technologies which carry generated packets among network devices from hop to hop.
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