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Chapter 10 Quality of Service (QoS)
P-2612HNU-Fx User’s Guide
191
Click
Network Setting > QoS
to open the
General
screen.
Figure 70
Network Setting > QoS > General
The following table describes the labels in this screen.
Table 38
Network Setting > QoS > General
LABEL
DESCRIPTION
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
Upstream
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.
Setting this number higher than the interface’s actual transmission speed
will stop lower priority traffic from being sent if higher priority traffic uses
all of the actual bandwidth.
If you set this number lower than the interface’s actual transmission
speed, the ZyXEL Device will not use some of the interface’s available
bandwidth.
Leave this field blank to have the ZyXEL Device set this value
automatically.
Traffic priority
will be
automatically
assigned by
These fields are ignored if upstream traffic matches a class you
configured in the
Class Setup
screen.
If you select
Ethernet Priority
,
IP Precedence
or
Packet Length
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 or packet length.
See
Section 10.6.1 on page 199
for more information.
Page 192 / 424
Chapter 10 Quality of Service (QoS)
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192
10.3
The Queue Setup Screen
Use this screen to configure QoS queue assignment. Click
Network Setting >
QoS > Queue Setup
to open the screen as shown next.
Figure 71
Network Setting > QoS > Queue Setup
The following table describes the labels in this screen.
Apply
Click
Apply
to save your changes.
Cancel
Click
Cancel
to restore your previously saved settings.
Table 38
Network Setting > QoS > General
LABEL
DESCRIPTION
Table 39
Network Setting > QoS > Queue Setup
LABEL
DESCRIPTION
Add new
Queue
Click this to create a new entry.
#
This is the index number of this entry.
Status
Select the check box to enable the queue.
Name
This shows the descriptive name of this queue.
Interface
This shows the name of the ZyXEL Device’s interface through which traffic
in this queue passes.
Priority
This shows the priority of this queue.
Weight
This shows the weight of this queue.
Buffer
Management
This shows the queue management algorithm used by the ZyXEL Device.
Rate Limit
(kbps)
This shows the maximum transmission rate allowed for traffic on this
queue.
Modify
Click the
Edit
icon to edit the queue.
Click the
Delete
icon to delete an existing queue. Note that subsequent
rules move up by one when you take this action.
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Chapter 10 Quality of Service (QoS)
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10.3.1
Add/Edit a QoS Queue
Use this screen to configure a queue. Click
Add new queue
in the
Queue Setup
screen or the
Edit
icon next to an existing queue.
Figure 72
Queue Setup: Add/Edit
The following table describes the labels in this screen.
Apply
Click
Apply
to save your changes.
Cancel
Click
Cancel
to restore your previously saved settings.
Table 39
Network Setting > QoS > Queue Setup (continued)
LABEL
DESCRIPTION
Table 40
Queue Setup: Add/Edit
LABEL
DESCRIPTION
Active
Select to enable or disable this queue.
Name
Enter the descriptive name of this queue.
Priority
Select the priority level (from 1 to 7) of this queue.
The larger the number, the higher the priority level. Traffic assigned to
higher priority queues gets through faster while traffic in lower priority
queues is dropped if the network is congested.
Weight
Select the weight (from 1 to 15) of this queue.
If two queues have the same priority level, the ZyXEL Device divides the
bandwidth across the queues according to their weights. Queues with
larger weights get more bandwidth than queues with smaller weights.
Rate Limit
Specify the maximum transmission rate (in Kbps) allowed for traffic on
this queue.
Apply
Click
Apply
to save your changes.
Back
Click
Back
to return to the previous screen without saving.
Page 194 / 424
Chapter 10 Quality of Service (QoS)
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194
10.4
The Class Setup 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 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.
Click
Network Setting >
QoS > Class Setup
to open the following screen.
Figure 73
Network Setting > QoS > Class Setup
The following table describes the labels in this screen.
Table 41
Network Setting > QoS > Class Setup
LABEL
DESCRIPTION
Add new
Classifier
Click
this to create a new classifier.
Order
This field displays the order number of the classifier.
Status
Select the check box to enable the classifier.
Class Name
This is the name of the classifier.
Classification
Criteria
This shows criteria specified in this classifier, for example the interface
from which traffic of this class should come and the source MAC
address of traffic that matches this classifier.
Forward to
This is the interface through which traffic that matches this classifier is
forwarded out.
DSCP Mark
This is the DSCP number added to traffic of this classifier.
To Queue
This is the name of the queue in which traffic of this classifier is put.
Modify
Click the
Edit
icon to edit the classifier.
Click the
Delete
icon to delete an existing classifier. Note that
subsequent rules move up by one when you take this action.
Apply
Click
Apply
to save your changes.
Cancel
Click
Cancel
to restore your previously saved settings.
Page 195 / 424
Chapter 10 Quality of Service (QoS)
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10.4.1
Add/Edit QoS Class
Click
Add
new Classifier
in the
Class Setup
screen or the
Edit
icon next to an
existing classifier to configure it.
Figure 74
Class Setup: Add/Edit
The following table describes the labels in this screen.
Table 42
Class Setup: Add/Edit
LABEL
DESCRIPTION
Class Configuration
Active
Select to enable this classifier.
Class Name
Enter a descriptive name of up to 32 printable English keyboard
characters, including spaces.

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