A Wide-Area network, or WAN, is spread out geographically and so requires long-distance connections between locations. WANs use routers to direct traffic to the appropriate subnet or LAN. Some companies lease telecommunications lines, called "private circuits," to connect sites on their WAN. Others rely on VPN tunnels over the public Internet to allow remote users to log on to the WAN. In addition to leased lines, which can be expensive, WANs can use circuit-switching or packet-switching techniques.


The Evolution of Internet2 Speeds Up

Internet2-a superfast network used by researchers and academic institutions that need to traffic huge loads of data-is futuristic and a bit exotic. But look no further than an application More >

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Shining a Light on Shadow Networks

Carl Weinschenk spoke to Blue Coat Chief Scientist Qing Li. The gradual adoption of IPv6 networks is not without its challenges. Qing Li, Blue Coat's chief scientist, discusses what could be a More >

Energy Efficiency: What Cannot Be Measured Cannot Be Improved

Arthur Cole spoke with Sunil Kalidindi, director of voice and wireless, Ixia. Cole: What is the Energy Consumption Rating (ECR) and how will it benefit the enterprise/networking community?Kalidindi: More >

Western Europe Leads in Voice-Enabled DSL Gateways

Carl Weinschenk spoke with Steve Nozik, principal analyst, the Dell'Oro Group. The firm recently released "The Dell'Oro Group Quarterly Access Report."   Weinschenk: What did the study look at, More >

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