QoS Technologies

QoS technologies classify network traffic and then ensure that some of that traffic receives special handling. The special handling may include attempts to provide improved availability, error rates, latency, and jitter.

However, because of the perceived complexity of QoS, many organizations choose to implement service quality differentiation through the use of separate facilities (isolation) instead of through QoS technology. For example, a separate LAN can be built to handle Voice over IP (VoIP), thereby isolating it from delays caused by large-scale file transfers on the data LAN. The QoS alternative of using frame tagging on the LAN may appear to be too complicated. In some cases, the organization may simply over-provision ...

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