There are common low-level technical quality metrics that can be applied to network infrastructures to paint a picture of overall service quality. They are as follows:
Workload and required bandwidth
Availability and packet loss
These were first introduced in Chapter 2, “Service Level Management,” and they are expanded upon here.
Some services require a guaranteed, unchanging amount of bandwidth to function properly; for those situations, bandwidth guarantees are necessary. Others simply require a certain amount of bandwidth averaged over a long interval. In either case, the bandwidth required is a function of the workload being applied ...