Let’s have a look at QoS or how to unfairly manage traffic in the face ofcongestion on Cisco devices.1 What Is QoS and Why Do We Need It? QoS is concerned with 4 characteristics of network traffic: bandwidth (capacity of a link) delay (between sending a packet and the recipient receiving it, or RTT) variation in delay (jitter) packet loss QoS comes into play when the network is not able to process every packet as soonas it received, which is most always. Think of a gigabit data stream comin...
