ACCESS GATEWAY
Introduction 32
Load Balancing With Users Connected to a Preferred ISP Link
In this scenario, the hotel has purchased 2 x ISP links for guest HSIA. One is a high-quality, high-cost
"business grade" ISP circuit, and the other is a low-cost, lower-grade domestic service provided by the local
cable TV operator. The hotel has a number of bill plan options including free-to-use and pay-to-use premium
plans. Under normal circumstances, the hotel wants guests who have selected a free plan to use the low-cost
link, and guests who have selected a premium service to use the higher-cost, business-grade ISP connection. If
either link fails, guest should fail over to the other links until the preferred link is restored.
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