D-Link DGS-3200-10 Product Manual - Page 126
Bandwidth Control, Traffic Control, 802.1p Default Priority, 802.1p User Priority
UPC - 790069306310
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xStack® DGS-3200 Series Layer 2 Gigabit Ethernet Managed Switch QoS Bandwidth Control Traffic Control 802.1p Default Priority 802.1p User Priority QoS Scheduling Mechanism Section 4 QoS is an i mplementation of the IEEE 802.1p standard that allows network administrators a m ethod of reserving bandwidth for important functions t hat re quire a l arge bandwidth or ha ve a high priority, suc h as VoIP (voice-over I nternet Pr otocol), we b browsing applications, file server applications or video conferencing. Not only can a l arger bandwidth be c reated, but other less critical traffic can be limited, so e xcessive bandwidth can be sa ved. 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 113