Differentiated services or DiffServ is 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. DiffServ can, for example, be used to provide low-latency to critical network traffic such as voice or streaming media while providing simple best-effort service to non-critical services such as web traffic or file transfers.
DiffServ uses the 6-bit Differentiated Services Field (DS field) in the IP header for packet classification purposes. The DS field and ECN field replace the outdated IPv4 TOS field.
Read more about Differentiated Services: Background, Traffic Management Mechanisms, DiffServ Domain, Classification and Marking, Advantages of DiffServ, Bandwidth Broker, DiffServ RFCs
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“O, the difference of man and man!
To thee a woman’s services are due.”
—William Shakespeare (1564–1616)