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Chapter III Advanced Functions
3-1 Quality of Service (QoS)
Quality of service provides an efficient way for computers on the network to
share the internet bandwidth with a promised quality of internet service.
Without QoS, all computers and devices on the network will compete with
each other to get internet bandwidth, and some applications which require
guaranteed bandwidth (like video streaming and network telephone) will be
affected, therefore an unpleasing result will occur, like the interruption of
video / audio transfer.
With this function, you can limit the maximum bandwidth or give a
guaranteed bandwidth for a specific computer, to avoid said unpleasing
result from happening.
3-1-1 Basic QoS Settings
Please click ‘Qos’ menu on the left of web management interface and the
following message will be displayed on your web browser:
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Enable QoS (1):
Check this box to enable QoS function, unselect this
box if you don’t want to enforce QoS bandwidth
limitations.
Total Download
You can set the limit of total download
Bandwidth (2):
bandwidth in kbits. To disable download bandwidth
limitation, input ‘0’ here.
Total Upload
You can set the limit of total upload
Bandwidth (3):
bandwidth in kbits. To disable upload bandwidth
limitation, input ‘0’ here.
Current QoS
All existing QoS rules will be displayed here.
Table (4):
Add (5):
Click ‘add’ button to add a new QoS rule, see section
3-1-2 ‘Add a new QoS rule’ below.
Edit (6):
If you want to modify the content of a specific rule,
please check the ‘select’ box of the rule you want to
edit, then click ‘Edit’ button.
Only one rule should be
selected a time!
If you didn’t select a rule before
clicking ‘Edit’ button, you’ll be prompted to add a new
rule.
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Delete (7):
You can delete selected rules by clicking this
button. You can select one or more rules to delete by
check the ‘select’ the box of the rule(s) you want to
delete a time.
If the QoS table is empty, this button
will be grayed out and can not be clicked.
Delete All (8):
By clicking this button, you can delete all rules
currently in the QoS table.
If the QoS table is empty,
this button will be grayed out and can not be clicked.
Move Up (9):
You can pull up the priority of the QoS rule you
selected by clicking this button.
Move Down (10):
You can lower the priority of the QoS rule you selected
by clicking this button.
If you want to reset all settings in this page back to previously-saved value,
please click ‘Cancel’ button.
After you finish with all settings, please click ‘Apply’ (11) button and the
following message will be displayed on your web browser:
Press ‘Go Back’ to save the settings made and go back to web management
interface; press ‘Apply’ to save the settings made and restart the router so the
settings will take effect after it reboots.
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3-1-2 Add a new QoS rule
After you click ‘Add’ button in QoS menu, the following message will
appear:
Rule Name (1):
Please give a name to this QoS rule (up to 15
alphanumerical characters)
Bandwidth (2):
Set the bandwidth limitation of this QoS rule. You have
to select the data direction of this rule (Upload of
Download), and the speed of bandwidth limitation in
Kbps, then select the type of QoS: ‘guarantee’
(guaranteed usable bandwidth for this rule) or ‘max’
(set the maximum bandwidth for the application
allowed by this rule).
Local IP
Specify the local (source) IP address
Address (3):
that will be affected by this rule. Please input the
starting IP address in the left field, and input the end
IP address in the right field to define a range of IP
addresses, or just input the IP address in the left field
to define a single IP address.
Local Port
Please input the range of local (source)
Range (4):
port number that will be affected by this rule. If you
want to apply this rule on port 80 to 90, please
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input ’80-90’; if you want to apply this rule on a single
port, just input the port number, like ‘80’.
Remote IP
Specify the remote (destination) IP address
Address: (5):
that will be affected by this rule. Please input the
starting IP address in the left field, and input the end
IP address in the right field to define a range of IP
addresses, or just input the IP address in the left field
to define a single IP address.
Remote Port
Please input the range of remote (destination)
Range (6):
port number that will be affected by this rule. If you
want to apply this rule on port 80 to 90, please
input ’80-90’; if you want to apply this rule on a single
port, just input the port number, like ‘80’.
If the remote
(destination) IP address and /or port number is
universal, just leave it blank.
Traffic Type (7):
Please select the traffic type of this rule,
available options are None, SMTP, HTTP, POP3, and
FTP. You can select a specific traffic type for this rule,
if you want to make this rule as a IP address based rule
(apply the limitation on all traffics from / to the
specified IP address / port number), select ‘None’.
Protocol (8):
Please select the protocol type of this rule,
available options are TCP and UDP. If you don’t know
what protocol your application uses, please try ‘TCP’
first, and switch to ‘UDP’ if this rule doesn’t seems to
work.
After you finish with all settings, please click ‘save’ button (9), you’ll be
brought back to previous menu, and the rule you just set will appear in
current QoS table; if you did anything wrong, you’ll get an error message
when you click ‘Save’ button, please correct your input by the instructions

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