ZyXEL GS-1548 User Manual download pdf (Page 71)

Chapter 11 QoS

GS-1524/GS-1548 User’s Guide

Figure 38 QoS Setting

The following table describes the labels in this screen.

Table 17 QoS Setting

LABEL DESCRIPTION

Advanced Click this link to configure QoS settings based on port number, IP address or configure

DSCP or ToS priority to 802.1p priority mappings.

Number of

queues

This field displays the number of queues configurable on the Switch. Click Change to

edit the number of queues on the Switch.

Scheduling

Method

Select Strict Priority or Weighted Round Robin.

Strict Priority scheduling singles out the highest priority queue and ensures all queued

traffic in this queue is transmitted before servicing the lower priority queues. Strict

Priority scheduling services the remaining queues using WRR.

Note: Queue weights can only be changed when Weighted Round

Robin is selected.

Weighted Round Robin scheduling services queues on a rotating basis based on their

queue weight (the number you configure in the queue Weight field). Queues with larger

weights get more service than queues with smaller weights.

Priority This value indicates packet priority and is retrieved from the priority tag field of incoming

packets. The values range from 0 (lowest priority) to 7 (highest priority). Click the options

below the priority values to send packets of a specific priority to a particular queue. You

can also set this priority based on criteria you configure in the Advanced QoS screens.

See the sections later in this chapter for more information.

Queue 0 ...

Queue 3

This field indicates which Queue (0 to 3) you are configuring. Queue 0 has the lowest

priority and Queue 3 the highest priority.

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ZyXEL GS-1548 User Manual Page 71