ZyXEL Communications FMG Series, User Manual

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Chapter 5 Advance
FMG Series User’s Guide
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5.4 The QoS Classification Screen
Use this screen to add, edit or delete QoS 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.
You can give different priorities to traffic that the FMG forwards 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.
Click Advance > QoS Classification to open the following screen.
Figure 15 Advance > QoS Classification
The following table describes the labels in this screen.
Rate Limit
(Kbps) This shows the maximum transmission rate allowed for traffic on this queue. Rate limit 0 means
there's no rate limit on this queue.
Enable Select this to enable or disable this queue.
Apply Changes Click Apply Changes to save your changes.
Table 11 Advance > Queue setting (continued)
LABEL DESCRIPTION
Table 12 Advance > QoS Classification
LABEL DESCRIPTION
Name
Enter a descriptive name of up to 15 printable English keyboard characters, not including
spaces.
Order This is the index number of the entry. The classifiers are applied in order of their numbering.
Direction
Select the direction ( Upstream or Downstream ) that you want to allocate using QoS.
Classification Rules
VLAN ID This is the VLAN ID number to identify the traffic of this classifier.
802.1p Select a priority level (between 0 and 7) from the drop-down list box. "0" is the lowest priority
level and "7" is the highest.
802.1p end Select a priority level (between 0 and 7) from the drop-down list box. "0" is the lowest priority
level and "7" is the highest.
DSCP
Enter a DSCP (DiffServ Code Point) number between 0 and 63 in this field.
DSCP end Enter a DSCP (DiffServ Code Point) number between 0 and 63 in this field.
Mark
VLAN ID Mark
Enter a VLAN ID number with which the FMG replaces the VLAN ID of the frames.