Networking Concepts and Technology: A Designer's Resource

QoS Components

To give you enough background on the fundamentals and an implementation perspective, this section describes the overall network and systems architecture and identifies the sources of delays. It also explains why QoS is essentially about controlling network and system resources in order to achieve more predictable delays for preferred applications.

Implementation Functions

Three necessary implementation functions are:

• Traffic Rate Limiting and Traffic Shaping – Token Leaky Bucket Algorithm. Network traffic is always bursty. The level of burstiness is controlled by the time resolution of the measurements. Rate limiting controls the burstiness of the traffic coming into a switch or server. Shaping refers to the smoothing of the egress ...