Device Online Help

Setting QoS priority for destination TCP flows

The example that follows explains how to set QoS priority for destination TCP flows. Specifically, it involves prioritizing traffic based on the TCP port number as follows:

• Destination TCP port = 80 to QoS level 0
• Destination TCP port = 23 to QoS level 3
• Destination TCP port = 21 to QoS level 5

In addition, the example applies the QoS priority to all of the ingress VLANs . See the graphic that follows to prioritize egress traffic based on the TCP port number.

To prioritize traffic based on the destination TCP port number, follow these steps. (Note that they show how to configure filtering based upon the assumption that you have already configured the VLANs using VLAN names, 10, 11, and 12).

1. From the Device Manager menu bar, choose IP Routing > Filter.

The ACL dialog box opens with the Template Mode tab displayed.

By default, Template Mode 2 should already be set for QoS.

2. Click the Flow Classifier tab.

The Flow Classifier tab opens.

3. Click QoSFlavor and then select TCP from the selection menu:
4. Click the Template Rule tab.

The Template Rule tab opens.

5. Add three template rules for tcp, un-used, and un-used in the L4SwitchSessionType field.
6. Access the ACL, Insert Template Rule dialog by clicking Insert on the Template Rule dialog.
7. Add the three template rules in the Index field you specified in Step 5.
8. Click Close to exit the ACL, Insert Template Rule dialog.
9. Click the Bind VLAN tab.

The Bind VLAN tab opens.

10. Click Insert to insert a bind VLAN.

The ACL, Insert Bind VLAN dialog box opens.

11. Select 2 as the TemplateId.
12. Click the ellipsis button.

The VlanName selection box opens.

13. Select 12 as the VLAN name and click OK.
14. Click Close to exit the ACL, Insert Bind VLAN dialog.
15. Click Close to return to the main Device Manager window.