Zyxel VMG8924-B30A Router Manual PDF (Setup & Configuration Guide)

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Chapter 9 Quality of Service (QoS)

VMG8924-B10A and VMG8924-B30A Series User’s Guide

146

9.5.1

Add/Edit QoS Class

Click

Add new Classifier

in the

Class Setup

screen or the

Edit

icon next to a classifier to open

the following screen.

Figure 77

Class Setup: Add/Edit

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Chapter 9 Quality of Service (QoS)

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The following table describes the labels in this screen.

Table 50

Class Setup: Add/Edit

LABEL

DESCRIPTION

Active

Select this to enable this classifier.

Class Name

Enter a descriptive name of up to 15 printable English keyboard characters, not including

spaces.

Classification

Order

Select an existing number for where you want to put this classifier to move the classifier to

the number you selected after clicking

Apply

Select

Last

to put this rule in the back of the classifier list.

From Interface

If you want to classify the traffic by an ingress interface, select an interface from the

From

Interface

drop-down list box.

Ether Type

Select a predefined application to configure a class for the matched traffic.

If you select

, you also need to configure source or destination MAC address, IP address,

DHCP options, DSCP value or the protocol type.

If you select

802.1Q

, you can configure an 802.1p priority level.

Source

Address

Select the check box and enter the source IP address in dotted decimal notation. A blank

source IP address means any source IP address.

Subnet

Netmask

Enter the source subnet mask.

Port Range

If you select

TCP

UDP

in the

IP Protocol

field, select the check box and enter the port

number(s) of the source.

MAC

Select the check box and enter the source MAC address of the packet.

MAC Mask

Type the mask for the specified MAC address to determine which bits a packet’s MAC

address should match.

Enter “f” for each bit of the specified source MAC address that the traffic’s MAC address

should match. Enter “0” for the bit(s) of the matched traffic’s MAC address, which can be of

any hexadecimal character(s). For example, if you set the MAC address to

00:13:49:00:00:00 and the mask to ff:ff:ff:00:00:00, a packet with a MAC address of

00:13:49:12:34:56 matches this criteria.

Exclude

Select this option to exclude the packets that match the specified criteria from this classifier.

Destination

Address

Select the check box and enter the source IP address in dotted decimal notation. A blank

source IP address means any source IP address.

Subnet

Netmask

Enter the source subnet mask.

Port Range

If you select

TCP

UDP

in the

IP Protocol

field, select the check box and enter the port

number(s) of the source.

MAC

Select the check box and enter the source MAC address of the packet.

MAC Mask

Type the mask for the specified MAC address to determine which bits a packet’s MAC

address should match.

Enter “f” for each bit of the specified source MAC address that the traffic’s MAC address

should match. Enter “0” for the bit(s) of the matched traffic’s MAC address, which can be of

any hexadecimal character(s). For example, if you set the MAC address to

00:13:49:00:00:00 and the mask to ff:ff:ff:00:00:00, a packet with a MAC address of

00:13:49:12:34:56 matches this criteria.

Exclude

Select this option to exclude the packets that match the specified criteria from this classifier.

Others

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Chapter 9 Quality of Service (QoS)

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Service

This field is available only when you select

in the

Ether Type

field.

This field simplifies classifier configuration by allowing you to select a predefined

application. When you select a predefined application, you do not configure the rest of the

filter fields.

IP Protocol

This field is available only when you select

in the

Ether Type

field.

Select this option and select the protocol (service type) from

TCP

UDP

ICMP

IGMP

. If

you select

User defined

, enter the protocol (service type) number.

DHCP

This field is available only when you select

in the

Ether Type

field.

Select this option and select a DHCP option.

If you select

Vendor Class ID (DHCP Option 60)

, enter the Vendor Class Identifier

(Option 60) of the matched traffic, such as the type of the hardware or firmware.

If you select

User Class ID (DHCP Option 77)

, enter a string that identifies the user’s

category or application type in the matched DHCP packets.

Packet

Length

This field is available only when you select

in the

Ether Type

field.

Select this option and enter the minimum and maximum packet length (from 46 to 1500) in

the fields provided.

DSCP

This field is available only when you select

in the

Ether Type

field.

Select this option and specify a DSCP (DiffServ Code Point) number between 0 and 63 in the

field provided.

802.1P

This field is available only when you select

802.1Q

in the

Ether Type

field.

Select this option and select a priority level (between 0 and 7) from the drop-down list box.

"0" is the lowest priority level and "7" is the highest.

VLAN ID

This field is available only when you select

802.1Q

in the

Ether Type

field.

Select this option and specify a VLAN ID number.

TCP ACK

This field is available only when you select

in the

Ether Type

field.

If you select this option, the matched TCP packets must contain the ACK (Acknowledge)

flag.

Exclude

Select this option to exclude the packets that match the specified criteria from this classifier.

DSCP Mark

This field is available only when you select

in the

Ether Type

field.

If you select

Mark

, enter a DSCP value with which the Device replaces the DSCP field in the

packets.

If you select

Unchange

, the Device keep the DSCP field in the packets.

802.1P Mark

Select a priority level with which the Device replaces the IEEE 802.1p priority field in the

packets.

If you select

Unchange

, the Device keep the 802.1p priority field in the packets.

VLAN ID

If you select

Remark

, enter a VLAN ID number with which the Device replaces the VLAN ID

of the frames.

If you select

Remove

, the Device deletes the VLAN ID of the frames before forwarding

them out.

If you select

Add

, the Device treat all matched traffic untagged and add a second VLAN ID.

If you select

Unchange

, the Device keep the VLAN ID in the packets.

Forward to

Interface

Select a WAN interface through which traffic of this class will be forwarded out. If you select

Unchange

, the Device forward traffic of this class according to the default routing table.

Table 50

Class Setup: Add/Edit (continued)

LABEL

DESCRIPTION

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Chapter 9 Quality of Service (QoS)

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9.6

The QoS Policer Setup Screen

Use this screen to configure QoS policers that allow you to limit the transmission rate of incoming

traffic. Click

Network Setting > QoS >

Policer Setup

. The screen appears as shown.

Figure 78

Network Setting > QoS > Policer Setup

The following table describes the labels in this screen.

To Queue Index

Select a queue that applies to this class.

You should have configured a queue in the

Queue Setup

screen already.

Apply

Click

Apply

to save your changes.

Cancel

Click

Cancel

to exit this screen without saving.

Table 50

Class Setup: Add/Edit (continued)

LABEL

DESCRIPTION

Table 51

Network Setting > QoS > Policer Setup

LABEL

DESCRIPTION

Add new Policer

Click this to create a new entry.

This is the index number of the entry.

Status

This field displays whether the policer is active or not. A yellow bulb signifies that this

policer is active. A gray bulb signifies that this policer is not active.

Name

This field displays the descriptive name of this policer.

Regulated

Classes

This field displays the name of a QoS classifier

Meter Type

This field displays the type of QoS metering algorithm used in this policer.

Rule

These are the rates and burst sizes against which the policer checks the traffic of the

member QoS classes.

Action

This shows the how the policer has the Device treat different types of traffic belonging to

the policer’s member QoS classes.

Modify

Click the

Edit

icon to edit the policer.

Click the

Delete

icon to delete an existing policer. Note that subsequent rules move up by

one when you take this action.

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Chapter 9 Quality of Service (QoS)

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9.6.1

Add/Edit a QoS Policer

Click

Add

new Policer

in the

Policer Setup

screen or the

Edit

icon next to a policer to show the

following screen.

Figure 79

Policer Setup: Add/Edit

The following table describes the labels in this screen.

Table 52

Policer Setup: Add/Edit

LABEL

DESCRIPTION

Active

Select the check box to activate this policer.

Name

Enter the descriptive name of this policer.

Meter Type

This shows the traffic metering algorithm used in this policer.

The

Simple Token Bucket

algorithm uses tokens in a bucket to control when traffic can be

transmitted. Each token represents one byte. The algorithm allows bursts of up to

bytes

which is also the bucket size.

The

Single Rate Three Color Marker

(srTCM) is based on the token bucket filter and

identifies packets by comparing them to the Committed Information Rate (CIR), the

Committed Burst Size (CBS) and the Excess Burst Size (EBS).

The

Two Rate Three Color Marker

(trTCM) is based on the token bucket filter and

identifies packets by comparing them to the Committed Information Rate (CIR) and the

Peak Information Rate (PIR).

Committed

Rate

Specify the committed rate. When the incoming traffic rate of the member QoS classes is

less than the committed rate, the device applies the conforming action to the traffic.

Committed

Burst Size

Specify the committed burst size for packet bursts. This must be equal to or less than the

peak burst size (two rate three color) or excess burst size (single rate three color) if it is also

configured.

This is the maximum size of the (first) token bucket in a traffic metering algorithm.

Conforming

Action

Specify what the Device does for packets within the committed rate and burst size (green-

marked packets).

•

Pass:

Send the packets without modification.

•

DSCP Mark:

Change the DSCP mark value of the packets. Enter the DSCP mark value to

use.

Non-

Conforming

Action

Specify what the Device does for packets that exceed the excess burst size or peak rate and

burst size (red-marked packets).

•

Drop:

Discard the packets.

•

DSCP Mark:

Change the DSCP mark value of the packets. Enter the DSCP mark value to

use. The packets may be dropped if there is congestion on the network.

Rate

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