Class of Service Configuration
Class of Service (CoS) is a 3-bit field within a layer two Ethernet frame header using IEEE 802.1Q. Class of Service (CoS) is a way of managing traffic in a network by grouping similar types of traffic (for example, e-mail, streaming video, voice, large document file transfer) together and treating each type as a class with its own level of service priority. Unlike Quality of Service (QoS) traffic management, Class of Service technologies do not guarantee a level of service in terms of bandwidth and delivery time; they offer a "best-effort."
Enable High Priority: When this check box is ticked, the packets passing through the following ports will be serviced in accordance with the mode of Port-based or VLAN Tag-based.
Port No: The label of each port.
Port Base: Tick this check box to apply the priority rule to the packets passing through the ticked ports.
VLAN Tag: Tick this check box to apply the priority rule to the packets passing the ticked ports by checking the 3-bit field within the frame header.
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