Why Quality of Service Is Essential
QoS is comprised of the mechanisms that give network administrators the ability to control the mix of bandwidth, delay, variances in delay (jitter), and packet loss on their network in order to:
- Deliver a network service such as Voice over IP (VoIP).
- Define different service-level agreements (SLAs) for divisions, applications, or organizations.
- Prioritize traffic across a WAN.
QoS gives the network administrator the ability to prioritize traffic and allocate resources across the network to ensure the delivery of mission-critical applications, especially in heavily loaded environments. Traffic is usually prioritized according to protocol. So what is the benefit of prioritizing traffic?
A simple metaphor ...
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