ZyXEL Communications Dimension ES-4124, User Manual

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ES-4124 User’s Guide
152 Chapter 20 Queuing Method
The following table describes the labels in this screen.
Table 47 Queuing Method
LABEL DESCRIPTION
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 portion (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.
FE Port
SPQ
Enable
This field is applicable only when you select WFQ or WRR .
Select a queue ( Q0 to Q7 ) to have the switch use Strictly Priority to service the
subsequent queue(s) after and including the specified queue for the 10/100 Mbps Ethernet
ports. For example, if you select Q5 , the switch services traffic on Q5 , Q6 and Q7 using
Strictly Priority .
Select None to always use WFQ or WRR for the 10/100 Mbps Ethernet ports.
Port This label shows the port you are configuring.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row
first to set the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make
them.
Weight When you select WFQ or WRR enter the queue weight here. Bandwidth is divided across
the different traffic queues according to their weights.
GE Port
SPQ
Enable
This field is applicable only when you select WFQ or WRR .
Select a queue ( Q0 to Q7 ) to have the switch use Strictly Priority to service the
subsequent queue(s) after and including the specified queue for the gigabit ports. For
example, if you select Q5 , the switch services traffic on Q5 , Q6 and Q7 using Strictly
Priority .
Select None to always use WFQ or WRR for the gigabit ports.
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 reset the fields.