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Quality of Service (QoS) and Data Center Bridging (DCB)

Quality of Service (QoS) is a set of technologies for managing network traffic in a cost-effective manner to enhance user experiences for home and enterprise environments. QoS technologies allow you to measure bandwidth, detect changing network conditions (such as congestion or availability of bandwidth), and prioritize or throttle traffic. For example, QoS technologies can be applied to prioritize traffic for latency-sensitive applications (such as voice or video) and to control the impact of latency-insensitive traffic (such as bulk data transfers).

Data Center Bridging (DCB) is a suite of Institute of Electrical and Electronics Engineers (IEEE) standards that enable converged fabrics in the data center, where storage, data networking, cluster inter-process communication, and management traffic all share the same Ethernet network infrastructure. DCB provides hardware-based bandwidth allocation to a specific type of traffic and enhances Ethernet transport reliability with the use of priority-based flow control.

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