Comtrend CT-5372 Router Manual PDF (Setup & Configuration Guide)

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6.5 Quality of Service

To display the QoS function, you need to enable the QoS feature in the WAN Setup.

Choose Add to configure network traffic classes.

The following screen will be displayed:

See below

Page 67 / 137

The screen creates a traffic class rule to classify the upstream traffic, assign queuing

priority and optionally overwrite the IP header TOS byte. A rule consists of a class

name and at least one condition below. All of the specified conditions in this

classification rule must be satisfied for the rule to take effect. Click 'Save/Apply' to

save and activate the rule.

Traffic Class Name

Enter name for traffic class.

Enable Differentiated Service

Configuration

Enable Differentiated Service Configuration if

required.

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Assign ATM Transmit Priority

Select Low, Medium or High.

Mark IP Precedence

Select between 0-7. The lower the digit shows the

higher the priority

If non-blank value is selected for 'Mark IP

Precedence' and/or 'Mark IP Type Of Service', the

corresponding TOS byte in the IP header of the

upstream packet is overwritten by the selected

value.

Note:

If Differentiated Service Configuration

checkbox is selected, you will only need to assign

ATM priority. IP Precedence will not be used for

classification. IP TOS byte will be used for DSCP

mark.

IP Type Of Service

Select either: Normal Service, Minimize Cost,

Maximize Reliability, Maximize Throughput,

Minimize Delay

If non-blank value is selected for 'Mark IP

Precedence' and/or 'Mark IP Type Of Service', the

corresponding TOS byte in the IP header of the

upstream packet is overwritten by the selected

value.

Note:

If Differentiated Service Configuration

checkbox is selected, you will only need to assign

ATM priority. IP Precedence will not be used for

classification. IP TOS byte will be used for DSCP

mark.

Assign Differentiated Services

Code Point (DSCP) Mark

Choose the required DSCP value. Default value is

“000000”.

Mark 802.1p if 802.1q is

enabled on WAN

Select between 0-7.

Specify Traffic Classification Rules

Enter the following conditions either for physical LAN/Wireless port or for IP level,

SET-1, or for IEEE 802.1p, SET-2

SET-1

Physical LAN Port

User can select from: ENET, ENET(1-4), USB,

Wireless or Wireless_Guest.

Protocol

User can select from: TCP, TCP/UDP, UDP or ICMP.

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Source IP Address

Enter the source IP address.

Source Subnet Mask

Enter the subnet mask for the source IP address.

Source Port (port or

port:port)

Enter source port number.

Destination IP address

Enter destination IP address.

Destination Subnet Mask

Enter destination subnet mask.

Destination port (port or

port:port)

Enter destination port number.

SET-2

802.1p Priority

Select between 0-7.

Traffic Class Name

Enter name for traffic class

Priority

Select Low, Medium or High.

IP Precedence

Select between 0-7. The lower the digit shows the

higher the priority

Mark IP Type Of Service

Select either: Normal Service, Minimize Cost,

Maximize Reliability, Maximize Throughput,

Minimize Delay

Physical LAN Port

User can select from: ENET, ENET(1-4), USB,

Wireless or Wireless_Guest.

Protocol

User can select from: TCP, TCP/UDP, UDP or ICMP.

Source IP Address

Enter the source IP address.

Source Subnet Mask

Enter the subnet mask for the source IP address.

Source Port (port or

port:port)

Enter source port number.

Destination IP address

Enter destination IP address.

Destination Subnet Mask

Enter destination subnet mask.

Destination port (port or

port:port)

Enter destination port number.

802.1p Priority

Select between 0-7. The lower the digit shows the

higher the priority

If the

Enable Differentiated Service Configuration

box is ticked (i.e. selected)

the following screen will be displayed:

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The additional Items are explained here.

Assign Differentiated Services

Code Point (DSCP) Mark

The selected Code Point gives the

corresponding priority to the packets that

satisfies the rules set below.

Source MAC Address

A packet belongs to SET-1, if a binary-AND of

its source MAC address with the Source MAC

Mask is equal to the binary-AND of the Source

MAC Mask and this field.

Source MAC Mask

This is the mask used to decide how many

bits are checked in Source MAC Address.

Destination MAC Address

A packet belongs to SET-1 then the result

that the Destination MAC Address of its

header binary-AND to the Destination MAC

Mask must equal to the result that this field

binary-AND to the Destination MAC Mask.

Destination MAC Mask:

This is the mask used to decide how many

bits are checked in Destination MAC Address.

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