DES-1218/DES-1226 10/100/1000 Mbps Ethernet Switch User’s Guide

Priority Queues

This feature allows you to customize packet traffic handling to the particular needs of your network. Configure this setting for packets passing through the port, using IEEE 802.1p priority tagging. These settings are universal, that is, they are for all ports on the Switch. Four priority levels may be assigned with Queue 3 being the highest priority queue, and Queue 0 being the lowest priority queue.

Note: The settings you assign to the queues, numbers 0-7, represent the IEEE 802.1p priority tag number. Do not confuse these settings with port numbers.

The highest priority queue, Queue 3, should reserved for data in which latency can have adverse affects on the function of an application, such as video or audio data, where latency can produce distorted sounds and images. Packets in the lower priority queues will be processed with less urgency. See the discussion on IEEE 802.1p Priority and management of priority queues in Chapter 6.

Figure 5-2 shows how priority queues might be assigned. Access the Priority Queue settings on the second page of the console management screen

Figure 5-2 Example of Priority Queue Assignments

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D-Link DES-1218, DES1226 manual Priority Queues, Example of Priority Queue Assignments