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2003 Survivor's Guide to Infrastructure: Page 13 of 22



Ethernet Switches

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For decades, telecom people have been balancing long-distance traffic across multiple vendors. This PBX feature, known as least-cost routing, has made it possible to route traffic across multiple hunt groups to reduce costs and reliance upon specific carriers for legacy voice communications. The least-cost routing concept makes even more sense for Internet traffic where performance can vary significantly from provider to provider at any given time. Route optimization products make it possible to route traffic dynamically across multiple ISPs with the potential for significant cost-savings and performance improvements.

Route balancing is also an effective way to mitigate the performance risks of setting up VPNs that traverse multiple ISPs. Route balancers also provide reports that give you insight into your ISP's hour-by-hour performance. This information can be invaluable when it's time to renegotiate your next ISP contract.