ZyXEL Communications GS-1524 User Manual

 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 

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.