D-Link DES-3326SR User Manual page 271

DES-3326SR Layer 3 Fast Ethernet Switch User's Guide
This establishes a Class of Service (CoS) for each of the switch's
four hardware priority queues.
The possible range for maximum packets is: 0 to 255 packets.
The possible range for maximum latency is: 0 to 255 (in
increments of 16 microseconds each).
Remember that the DES-3326SRSR has four priority queues
(and thus four Classes of Service) for each port on the switch.
Configuring QOS Output Scheduling
Click the Configure QOS link on the Advanced Setup menu,
and the click on the QOS Output Scheduling link:
Figure 6 - 89. QOS Output Scheduling
The MAX. Packets field specifies the number of packets that a
queue will transmit before surrendering the transmit buffer to
the next lower priority queue in a round-robin fashion.
The MAX. Latency field specifies the maximum amount of
time—in multiples of 16 microseconds—that a queue will have
to wait before being given access to the transmit buffer. The
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