D-Link DGS-3426 User Manual - Page 179
Bandwidth Control, QoS Scheduling Mechanism, QoS Output Scheduling, 802.1P Default Priority
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xStack DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch Section 8 QoS Bandwidth Control QoS Scheduling Mechanism QoS Output Scheduling 802.1P Default Priority 802.1P User Priority QoS The xStack DGS-3400 switch series supports 802.1p priority queuing Quality of Service. The following section discusses the implementation of QoS (Quality of Service) and benefits of using 802.1p priority queuing. The Advantages of QoS QoS is an implementation of the IEEE 802.1p standard that allows network administrators a method of reserving bandwidth for important functions that require a large bandwidth or have a high priority, such as VoIP (voice-over Internet Protocol), web browsing applications, file server applications or video conferencing. Not only can a larger bandwidth be created, but other less critical traffic can be limited, so excessive bandwidth can be saved. The Switch has separate hardware queues on every physical port to which packets from various applications can be mapped to, and, in turn prioritized. View the following map to see how the xStack DGS-3400 switch series implements basic 802.1P priority queuing. 165