Networking Concepts and Technology: A Designer's Resource

QoS-Capable Devices

This section describes the internals of QoS-capable devices. One of the difficulties of describing QoS implementations is the number of different perspectives that can be used to describe all the features. The scope of this section is limited to the priority-based model and the related functional components to implement this model. The priority-based model is the most common implementation approach because of its scalability advantage.

Implementation Approaches

There are two completely different approaches to implementing a QoS-capable IP switch or server:

The Reservation Model, also known as Integrated Services/RSVP or ATM, is the original approach, requiring applications to signal their traffic handling requirements. After ...