The different business needs outlined in the preceding section are satisfied by a variety of techniques. Many of these techniques can be used interchangeably. The choice of scheme depends on the specifics of the particular environment.
In order to support business SLAs, you can follow the approaches of capacity planning, Differentiated Services, or Integrated Services.
The basic idea behind supporting SLAs using capacity planning is fairly simple: Provide enough link bandwidth and processing capacity that the SLA requirements are satisfied. If an SLA is feasible at all (if it can be met on an unloaded network with unloaded servers), it should be possible to determine the link bandwidth and processing capacity that satisfied ...