Pre-configured composite operations for QoS lists

Last Updated : Nov 06, 2012 |

The following table lists the pre-configured entries in the composite operation table for rules in a QoS list:

No

Name

CoS

DSCP

Trust

0

CoS0

cos0

no change

No

1

CoS1

cos1

no change

No

2

CoS2

cos2

no change

No

3

CoS3

cos3

no change

No

4

CoS4

cos4

no change

No

5

CoS5

cos5

no change

No

6

CoS6

cos6

no change

No

7

CoS7

cos7

no change

No

9

No-Change

no change

no change

No

10

Trust-DSCP

-

-

DSCP

11

Trust-DSCP-CoS

-

-

DSCP and CoS

Each column represents the following:

No A number identifying the operation

Name A name identifying the operation. Use this name to attach the operation to a rule.

CoS The operation sets the Ethernet IEEE 802.1p CoS field in the packet to the value listed in this column

DSCP The operation sets the DSCP field in the packet to the value listed in this column

Trust Determines how to treat packets that have been tagged by the originator or other network devices. If the composite operation is set to Trust-DSCP, the packet’s CoS tag is set to 0 before the QoS list rules and DSCP map are executed. If the composite operation is set to CoSX, the DSCP map is ignored, but the QoS list rules are executed on the Ethernet IEEE 802.1p CoS field. (For example, the composite operation CoS3 changes the CoS field to 3.) If the composite operation is set to Trust-DSCP-CoS, the operation uses the greater of the CoS or the DSCP value. If the composite operation is set to No Change, the operation makes no change to the packet’s QoS tags.