Understanding Quality of Service
QoS is important to many network applications. Voice/data integration is not possible without. Nor is effective multimedia… or even VPNs. In this module, we’ll discuss what QoS is and some of its building blocks. Will also look at some specific examples of how QoS can be used.
QoS in Action Example 1: Prioritization of IP Telephony Example 2: ERP Application – SUMMARY – The goal of QoS is to provide better and more predictable network
Here’s an example of how RSVP works. Let’s first look at what the problem would be without RSVP. In this example, the video traffic still gets through, but
Cisco’s implementation of RED, called Weighted Random Early Detection (WRED), combines the capabilities of the RED algorithm with IP Precedence. This combination provides for preferential traffic handling for
Let’s now take a look at some of the building blocks of QoS. There are a wide range of QoS services. Queuing, traffic shaping, and filtering are essential
Basically, QoS comprises the mechanisms that give network managers the ability to control the mix of bandwidth, delay, variances in delay (jitter), and packet loss in the network