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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 follow the following instructions to set QoS parameters:
Please click ‘Applications and Gaming’ and then click ‘QoS’ tab at the
top of web management interface and the following message will be
displayed on your web browser:
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8
9
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Here are descriptions of every setting:
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.
Delete
You can delete selected rules by clicking this
Selected (7):
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
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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.
Reset (11):
If you want to erase all values you just entered.
Click ‘Reset’.
After you finish with all settings, please click ‘Apply’ (12) button and the
following message will be displayed on your web browser:
Please click ‘Continue’ to go back to previous setup menu; to continue on
other setup procedures, or click ‘Apply’ to reboot the router so the
settings will take effect (Please wait for about 30 seconds while router is
rebooting).
If you want to reset all settings in this page back to previously-saved
value, please click ‘Cancel’ button.
3-1-2 Add a new QoS rule
After you click ‘Add’ button in QoS menu, the following message will
appear:
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Here are descriptions of every setup items:
Rule Name (a):
Please give a name to this QoS rule (up to 15
alphanumerical characters)
Bandwidth (b):
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 (c):
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 (d):
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
a
b
c
d
e
f
g
h
i
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single port, just input the port number, like ‘80’.
Remote IP
Specify the remote (destination) IP address
Address: (e):
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 (f):
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 (g):
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 (h):
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 (i), 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 given by the error message.

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