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configuration.

If you want to make the change persistent in flash, choose

in the left windows to save it into flash.

When you press

or

buttons described above, the following page will show up in

your browser.

You can use it to define a QOS policy.

Controlled Traffic Flow:

Specify the traffic flow you want to control. For GRE protocol,

there is no need to specify the IP addresses or Application ports in this page. For other

protocols, at least one value shall be given.

Packet type

: The packet type will be controlled.

For GRE protocol, there is no need to

specify the IP addresses or Application ports in this page. For other protocols, at least one

value shall be given.

~

ANY:

No specified protocol type is specified.

~

TCP

~

UDP

~

ICMP

65

~

GRE:

For PPTP VPN Connections.

Assigned Data rate:

Assign the data ratio for this policy to be controlled.

For examples,

we want to only allow 20% of the total data transfer rate for the LAN-to-WAN direction to be

used for FTP server.

Then we can specify here with data ratio = 20.

If you have ADSL LINE

with 256K/bps.rate, the estimated data rate, in kbps, for this rule is 20%*256*0.9 = 46kbps.

(For 0.9 is an estimated factor for the effective data transfer rate for a ADSL LINE from LAN

to WAN. For WAN-to-LAN, it is 0.85 to 0.8).

Data Ratio

: percentage for the data rate to be controlled by this policy. As above FTP

server examples, it is 20.

Rate Type

: We provide 2 types here:.

~

Fixed (Maximum):

specify a fixed data rate for this policy.

It also is the maximal rate for

this policy.

As above FTP server example, you may want to “throttle” the outgoing FTP

speed to 20% of 256K and limit to it, you may use this type.

~

Guaranteed (Minimum):

specify a minimal data rate for this policy.

For example, you

want to provide a guaranteed data rate for your outside customers to access your internal

FTP server with, say at least, 20% of your total bandwidth.

You can use this type.

Then, if

there is available bandwidth that is not used, it will be given to this policy by following priority

assignment.

Priority for Non-used Bandwidth:

Specify the priority for the bandwidth that is not used.

For examples, you may specify two different QOS policies for different applications. Both

applications need a minimal bandwidth and need more bandwidth, beside the assigned one,

if there is any available/non-used one available.

So, you may specify which application can

have higher priority to acquire the non-used bandwidth.

~

High

~

Normal

: The default is normal priority.

~

Low

For the sample priority assignment for different policies, it is saved in a First-In-First-Out

way.

DSCP Marking

: Differentiated Services Code Point (DSCP), it is the first 6 bits in the ToS

byte. DSCP Marking allows users to classify traffic based on DSCP value and send packets

to next Router.

DSCP Mapping Table

Disabled

None

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Best Effort

Best Effort (000000)

Premium

Express Forwarding (101110)

Gold service (L)

Class 1, Gold (001010)

Gold service (M)

Class 1, Silver (001100)

Gold service (H)

Class 1, Bronze (001110)

Silver service (L)

Class 2, Gold (010010)

Silver service (M)

Class 2, Silver (010100)

Silver service (H)

Class 2, Bronze (010110)

Bronze service (L)

Class 3, Gold (011010)

Bronze service (M)

Class 3, Silver (011100)

Bronze service (H)

Class 3, Bronze (011110)

Local Machine IPs

: The IP address values for Local LAN machines you want to control.

(For IP packets from LAN to WAN, it is the source IP address. For IP packages from WAN to

LAN, it is the destination IP address.)

Remote Machine IPs

: The IP address values for Remote WAN machines you want to

control. (For IP packets from LAN to WAN, it is the destination IP address. For IP packages

from WAN to LAN, it is the source IP address.)

Local Application Ports

: The Application port values for local LAN machines you want

to control. (For TCP/UDP packets from LAN to WAN, it is the source port value. For

TCP/UDP packets from WAN to LAN, it is the destination port value.)

Remote Application Ports

: The Application port values for remote machines you want to

control. (For TCP/UDP packets from LAN to WAN, it is the destination port value. For

TCP/UDP packets from WAN to LAN, it is the source port value.)

Schedule Time

: Schedule your QOS policy.

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QOS example for your Network

Connection Diagram

ADSL Subscription Rate

Upstream: 256 kbps

Downstream: 2048 Mbps

Example QOS Plan

:.

Application IP or Ports

Control Flow

Data Rate

Time Schedule

VoIP User

192.168.0.1

Outgoing

Minimal 20% with high priority

for non-used bandwidth with

SDCP marking Class 1 Gold

Service

Always

FTP Sever

192.168.0.100 Incoming and

Going

outgoing :minimal 30%. Data

rate.

incoming :minimal 30%. Data

rate.

Both with low priority for

non-used bandwidth.

Only Working

Hours 9:00 to

17:00 Monday

to Friday.

HTTP web

browsing

users

80

Incoming and

Going

outgoing : limited 20%. Data

rate.

incoming : limited 30%. Data

rate.

Always

FTP Server

VoIP

HTTP web

browsing users

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Example QOS Setup

VoIP application

Voice is latency-sensitive application. Most VoIP devices are use SIP protocol and the port

number will be assigned by SIP module automatically. Better to use fixed IP address for

catching VoIP packets as high priority.