Previous Topic

Next Topic

Book Contents

Book Index

Adding and Editing Classes

ProductBar EMPTYLinked Diagram TemplateLinked Diagram TemplateLinked Diagram TemplateLinked Diagram TemplateProductBar EMPTY

To add or edit a QoS class

  1. Click Network in the main menu, and click the Traffic Shaper tab.

    The Quality of Service Classes page appears.

  2. Click Add.

    The UTM-1 QoS Class Editor wizard opens, with the Step 1 of 3: Quality of Service Parameters dialog box displayed.

  3. Complete the fields using the relevant information in the following table.
  4. Click Next.

    The Step 2 of 3: Advanced Options dialog box appears.

  5. Complete the fields using the relevant information in the following table.

Note: Traffic Shaper may not enforce guaranteed rates and relative weights for incoming traffic as accurately as for outgoing traffic. This is because Traffic Shaper cannot control the number or type of packets it receives from the Internet; it can only affect the rate of incoming traffic by dropping received packets. It is therefore recommended to enable traffic shaping for incoming traffic only if necessary. For information on enabling Traffic Shaper for incoming and outgoing traffic, see Using Internet Setup.
  1. Click Next.

    The Step 3 of 3: Save dialog box appears with a summary of the class.

  2. Type a name for the class.

    For example, if you are creating a class for high priority Web connections, you can name the class "High Priority Web".

  3. Click Finish.

    The new class appears in the Quality of Service Classes page.

See Also

Using Traffic Shaper

Overview

Setting Up Traffic Shaper

Predefined QoS Classes

Viewing and Deleting Classes

Restoring Traffic Shaper Defaults

Previous Topic

Next Topic

QoS Class Fields

In this field…

Do this…

Relative Weight

Type a value indicating the class's importance relative to the other defined classes.

For example, if you assign one class a weight of 100, and you assign another class a weight of 50, the first class will be allocated twice the amount of bandwidth as the second when the lines are congested.

Delay Sensitivity

Select the degree of precedence to give this class in the transmission queue:

  • Low (Bulk Traffic) - Traffic that is not sensitive to long delays. For example, SMTP traffic (outgoing email).
  • Medium (Normal Traffic) - Normal traffic
  • High (Interactive Traffic) - Traffic that is highly sensitive to delay. For example, IP telephony, videoconferencing, and interactive protocols that require quick user response, such as telnet.

Traffic Shaper serves delay-sensitive traffic with a lower latency. That is, Traffic Shaper attempts to send packets with a "High (Interactive Traffic)" level before packets with a "Medium (Normal Traffic)" or "Low (Bulk Traffic)" level.

Outgoing Traffic: Guarantee At Least

Select this option to guarantee a minimum bandwidth for outgoing traffic belonging to this class. Then type the minimum bandwidth (in kilobits/second) in the field provided.

Outgoing Traffic: Limit rate to

Select this option to limit the rate of outgoing traffic belonging to this class. Then type the maximum rate (in kilobits/second) in the field provided.

Incoming Traffic: Guarantee At Least

Select this option to guarantee a minimum bandwidth for incoming traffic belonging to this class. Then type the minimum bandwidth (in kilobits/second) in the field provided.

Incoming Traffic: Limit rate to

Select this option to limit the rate of incoming traffic belonging to this class. Then type the maximum rate (in kilobits/second) in the field provided.

DiffServ Code Point

Select this option to mark packets belonging to this class with a DiffServ Code Point (DSCP), which is an integer between 0 and 63. Then type the DSCP in the field provided.

The marked packets will be given priority on the public network according to their DSCP.

To use this option, your ISP or private WAN must support DiffServ. You can obtain the correct DSCP value from your ISP or private WAN administrator.