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Ingress Interface

This field is applicable for policy routing configuration only (see Policy Database)

Destination Interface

This field is applicable for policy routing configuration only (see Policy Database)

DiffServ Code Point

This field is applicable for policy routing configuration only (see Policy Database)

Class of Service

The selections are (in the order of priority): CoS1, CoS2, CoS3, CoS4, CoS5,

CoS6, and N/A.

Source IP

The IP address of the traffic source.

Mask

The source IP netmask. This field is required if the source IP has been entered.

Destination IP

The IP address of the traffic destination.

Mask

The netmask of the destination. This field is required if the destination IP has been

entered.

Protocol

The selections are TCP, UDP, ICMP, Specify, and none. If you choose Specify,

you need to enter the protocol number in the box next to the Protocol field.

This field cannot be configured alone, additional fields like

IP

and/or

Source MAC

should be configured.

This field is also required if the source port or destination port has been entered.

Source Port Start

The starting port of the source protocol. You cannot configure this field without

entering the protocol first.

Source Port End

The ending port of the source protocol. You cannot configure this field without

entering the protocol first.

Destination Port Start

The starting port of the destination protocol. You cannot configure this field

without entering the protocol first.

Destination Port End

The ending port of the destination protocol. You cannot configure this field without

entering the protocol first.

Source MAC

The MAC address of the traffic source.

Local Routing Mark

This field is applicable for policy routing configuration only (see Policy Database)

To configure QoS to give PC1 traffic over PC2 traffic

In our example there are two PCs in LAN group 1. You use PC 1 (192.168.1.5) to download

movies and PC 2 (192.168.1.10) to surf the internet.

1.

In the

Ingress

field, select

N/A

(not applicable).

The field is applicable for policy routing only.

2.

In the

Destination Interface

field, select

N/A

.

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The field is applicable for policy routing only.

3.

In the

Class of Service

field, leave the default

CoS1

.

4.

In the

Destination IP

field, enter

192.168.1.5

.

5.

In the

Destination IP Mask

field, enter

255.255.255.255

.

6.

In the

Protocol

field, leave the default selection,

TCP

.

7.

Click

Apply

to temporarily activate the settings on the page.

The rule is generated at the bottom of the page.

8.

To make the change permanent, click

Tools

and select

System Commands

. On the

System Commands

page, click

Save All

.

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Egress

Egress denotes the direction of a frame exiting an interface. For outgoing packets the CoS

marking needs to be translated to mapping understood by the network domains.

No Egress

The default

Egress

page setting. Domain mappings of the packets are not altered

Layer2

Enables you to map an outgoing packet to user priority bits which are honoured by

the VLAN bridged network. Only supported on WAN interfaces.

Layer3

Enables you to map CoS to ToS bits so priority marking of outgoing packets work

properly on IP networks.

To configure QoS on egress:

1.

From the navigation bar at the top of the screen click

Advanced

2.

From the left hand navigation pane select

Egress

.

3.

On the

Egress

page, select the interface from the

Interface

drop down.

4.

Select the appropriate

No Egress

,

Layer2

, or

Layer3

radio button.

5.

Click

Apply

The Apply button will temporarily save this connection. To make the change permanent, click

Tools

(at the top of the page) and select

System Commands

. On the

System Commands

page, click

Save All

.

No Egress Mode

The default Egress page setting for all interfaces is

No Egress

. In this mode, the domain

mappings of the packets are untouched.

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Egress Layer 2 Configuration

The Egress Layer 2 feature enables you to map the CoS of an outgoing packet to user priority

bits, which is honored by the VLAN network. This feature is available on the WAN interface only.

Interface

Select the WAN/LAN interface here to configure the QoS for outgoing traffic to

the IP network.

Default Non-IP

Locally generated packets (such as ARP packets) do not have a CoS marking.

You can define the CoS for all unclassified outgoing packets on layer 3 using

this field. The selections are (in the order of descending priority): CoS1, CoS2,

CoS3, CoS4, CoS5, and CoS6. The default value is CoS1 (recommended).

Translated ToS

The Type of Service field takes values from 1 to 255. The selections are 0, 1, 2,

3, 4, 5, 6, 7.

Class of Service

The selections are (in the order of descending priority): CoS1, CoS2, CoS3,

CoS4, CoS5, and CoS6.

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WLAN QoS Support

The WLAN QoS is supported; however, it is hard-coded and is not configurable on the Ingress

and Egress pages.

User Priority

Class of Service

WME Priority

DSCP Map

0 (Best-Effort)

CoS5

0

0 (0x0)

1 (Background)

CoS6

1

8 (0x20)

2 (Background)

CoS6

2

16 (0x40)

3 (Best-Effort)

CoS5

3

24 (0x60)

4 (Video)

CoS2

4

32 (0x80)

5 (Video)

CoS2

5

40 (0xA0)

6 (Voice)

CoS1

6

48 (0xC0)

7 (Voice)

CoS1

7

56 (0xE0)

There is no shaper support on WLAN interface.

Shaper

The shaper provides a way of determining priorities of different traffic classes. Three shaper

algorithms are supported: HTB (hierarchical token bucket), Low Latency Queue Discipline, and

PRIOWRR (priority based round robin).

HTB

Shapes the traffic of a class over the specific interface. All CoSx (where x= 1 to 6) is

assigned a specific rate that data will be shaped to meet; for example, if CoS1 is

100Kbps even 300Kbps of data is received on the interface only 100Kbps will be

sent. Of the

Max Rate

entered rates for each CoS channel may be configured. If

Max Rate is 300Kbps,

Cos1

is configured for 100Kbps,

CoS2

and

CoS3

are

configured for 150Kbps each and CoS6 for 300Kbps. CoS6 can use the whole

300Kbps of bandwidth only when there are no CoS1, CoS2, or CoS3 packets.

Low Latency

CoS1 is not rate limited, so the

CoS1

field is disable when

Low Latency Queue

Discipline

is checked. CoS1 takes priority (much as if CoS1 was set to

Max Rate

) If