networking: CoS vs. QoS

CoS - Class of Service

QoS - Quality of Service

NOT a layer 2 vs layer 3 differentiation.

NOT a guarantee for traffic (dependent upon each hop respecting the request).

QoS - Quality of Service: an umbrella term which covers the use of features such as traffic policy, shaping, and advanced queuing mechanisms.

CoS - Class of Service: a form of QoS applied at layer 2 (ex: PCP) and layer 3 (ex: DSCP).


Part 1, 2


Resources Utilized:

https://downloads.avaya.com/css/P8/documents/100016254

https://www.youtube.com/watch?v=0oNXGn-XPOc