Relation between DSCP/DiffServ and IP Precedence

Wikipedia describes differentiated services or DiffServ as "a computer networking architecture that specifies a simple, scalable and coarse-grained mechanism for classifying and managing network traffic and providing quality of service (QoS) on modern IP networks". Read more here:

A bit of history on Type of Service (ToS), IP Precedence, and DiffServ (DSCP) can be found here:

Essentially, both DiffServ/DSCP and IP Precedence are used to classify and differentiate traffic in a Quality of Service enabled network. The relationship between DSCP and IP Precedence is detailed in the table below.

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