IronPort Systems ES-1528 User Manual

Chapter 11 QoS

ES-1528 User’s Guide

Figure 39   DSCP Based QoS 

The following table describes the labels in this screen.  

You can configure the switch to assign a IEEE 802.1p priority to packets coming into the 
switch with Type of Service (ToS) priority assigned to them. Select ToS Based QoS in the 
QoS Enhancement Setting screen to view the following screen.

Table 19   DSCP Based QoS 

Mode

Select DSCP Based QoS to specify mapping rules between DSCP priority and IEEE 

802.1p priority for incoming packets on the switch. 

Change 

Priority

Configure the following:
•

DSCP - Select the DSCP priority for which you want to change a priority mapping.

•

Priority - Select the IEEE 802.1p priority you want to assign to the packets with the 

DSCP priority you specified in the DSCP field.

Click Change to view your changed settings.

DSCP, 

Priority

This is a summary table of your DSCP to IEEE 802.1p priority mappings. The DSCP 

column indicates the DSCP values of the incoming packets and the Priority column 

indicates what IEEE 802.1p priority gets assigned to those packets.

Apply 

Change 

Settings

Click this when you have reviewed the changes you want to make and you want to save 

them to the switch’s memory.