D-Link DGS-3200-16 User Manual - Page 102
QoS, An Example of the Default QoS Mapping on the Switch
UPC - 790069312007
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xStack® DGS-3200 Series Layer 2 Gigabit Ethernet Managed Switch QoS Bandwidth Control Traffic Control 802.p Default Priority 802.1p User Priority QoS Scheduling Mechanism Section 4 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 Switch implements basic 802.1P priority queuing. Figure 4 - 1. An Example of the Default QoS Mapping on the Switch The picture above shows the default priority setting for the Switch. Class-7 has the highest priority of the seven priority classes of service on the Switch. In order to implement QoS, the user is required to instruct the Switch to examine the header of a packet to 89