SLA Support for the ISP Environment
As in the case of the enterprise server, the provider of networking services often needs to specify SLAs for its customers. The SLA definition in terms of a network provider usually relates to the latency and throughput of the network that is available to its customers across the network. We assume that the environment for the ISP looks like the one shown in Figure 9.8, where many customers connect to the ISP at its points of presence (POPs) via access routers. The figure shows Customer A and Customer B, who use the services of the ISP. Each customer may have several sites connected to the ISP network. In Figure 9.8, Customers A and B each have two sites connected to the ISP. Multiple customers may be connected ...
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