ZyXEL p-2802h-i1 Manual Do Utilizador

Chapter 17 Quality of Service (QoS)

P-2802H(W)(L)-I Series User’s Guide

Figure 136   QoS: General

The following table describes the labels in this screen. 

Use this screen to add, edit or delete classifiers. A classifier groups traffic into data flows 
according to specific criteria such as the source address, destination address, source port 
number, destination port number or incoming interface. For example, you can configure a 
classifier to select traffic from the same protocol port (such as Telnet) to form a flow.

Table 100   QoS: General

Active QoS

Select the check box to turn on QoS to improve your network performance. 
You can give priority to traffic that the ZyXEL Device forwards out through the WAN 

interface. Give high priority to voice and video to make them run more smoothly. 

Similarly, give low priority to many large file downloads so that they do not reduce the 

quality of other applications. 

WAN 

Managed 

Bandwidth

Enter the amount of bandwidth for the WAN interface that you want to allocate using 

QoS. 
The recommendation is to set this speed to match the interface’s actual transmission 

speed. For example, set the WAN interface speed to 100000 kbps if your Internet 

connection has an upstream transmission speed of 100 Mbps.        
You can set this number higher than the interface’s actual transmission speed. This will 

stop lower priority traffic from being sent if higher priority traffic uses all of the actual 

bandwidth. 
You can also set this number lower than the interface’s actual transmission speed. This 

will cause the ZyXEL Device to not use some of the interface’s available bandwidth.

Traffic 

priority will 

be 

automatically 

assigned by

These fields are ignored if traffic matches a class you configured in the Class Setup 

screen.
If you select ON and traffic does not match a class configured in the Class Setup 

screen, the ZyXEL Device assigns priority to unmatched traffic based on the IEEE 

802.1p priority level, IP precedence and/or packet length. See 

 for more information.

If you select OFF, traffic which does not match a class is mapped to queue two.

Apply

Click Apply to save your settings back to the ZyXEL Device.

Cancel

Click Cancel to begin configuring this screen afresh.