Differentiated Services (DiffServ) is a networking architecture that provides quality of service (QoS) functionalities within computer networks. It is a mechanism used to prioritize and manage network traffic based on specific criteria, enabling efficient delivery of data packets in a reliable and controlled manner.
DiffServ operates by categorizing network traffic into different classes or traffic profiles, known as Differentiated Services Code Points (DSCPs) or DiffServ Code Points (DSCPs). Each DSCP is associated with a specific level of priority or quality of service defined by the network administrator. These priorities determine how the network handles and forwards packets.
The key feature of DiffServ is its ability to classify and treat packets differently based on specific requirements or policies. This classification is typically done based on factors such as packet size, application type, source or destination address, or service-level agreement (SLA) requirements. DiffServ-enabled routers and switches use this classification to prioritize and allocate network resources accordingly.
DiffServ offers several benefits, including improved network performance, reduced congestion, and better utilization of available bandwidth. By prioritizing critical or time-sensitive traffic, such as voice or video data, over less important traffic, it helps ensure that important data is delivered with low latency, minimal jitter, and minimal packet loss.
In summary, DiffServ is a networking architecture that facilitates the efficient and controlled management of network traffic by providing prioritization and quality of service functionalities. It enables the optimization of network resources and ensures that critical data receives the necessary attention for smooth and reliable communication.
