ZyXEL Communications XGS-4526 ユーザーズマニュアル

Chapter 22 Queuing Method

XGS-4526/4528F/4728F User’s Guide

Method Select 

SPQ (Strictly Priority Queuing), WFQ (Weighted Fair Queuing) or WRR 

(Weighted Round Robin).

Strictly Priority services queues based on priority only. When the highest 
priority queue empties, traffic on the next highest-priority queue begins. Q7 
has the highest priority and Q0 the lowest.

Weighted Fair Queuing is used to guarantee each queue's minimum bandwidth 
based on their bandwidth weight (the number you configure in the Weight 
field). Queues with larger weights get more guaranteed bandwidth than 
queues with smaller weights.

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.

Weight

Q0-Q7 

When you select WFQ or WRR enter the queue weight here. Bandwidth is 
divided across the different traffic queues according to their weights. 

Hybrid-
SPQ 

Lowest-
Queue

This field is applicable only when you select WFQ or WRR.

Select a queue (Q0 to Q7) to have the Switch use SPQ to service the 
subsequent queue(s) after and including the specified queue for the 
1000Base-T, 1000Base-X and 10 Gigabit Ethernet ports. For example, if you 
select Q5, the Switch services traffic on Q5, Q6 and Q7 using SPQ.

Select None to always use WFQ or WRR.

Apply

Click Apply to save your changes to the Switch’s run-time memory. The 
Switch loses these changes if it is turned off or loses power, so use the Save 
link on the top navigation panel to save your changes to the non-volatile 
memory when you are done configuring.

Cancel

Click Cancel to begin configuring this screen afresh.

Table 55   Advanced Application > Queuing Method  (continued)