Configuring Composite Operations - Avaya G250 Administration

CoS — the operation sets the Ethernet IEEE 802.1p CoS field in the packet to the value
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listed in this column
DSCP — the operation sets the DSCP field in the packet to the value listed in this column
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Trust — determines how to treat packets that have been tagged by the originator or other
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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 great 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.

Configuring composite operations

You can configure additional composite operations for QoS lists. You can also edit composite
operations that you configured. You cannot edit pre-configured composite operations.
Note:
You cannot configure additional composite operations for access control lists,
Note:
since all possible composite operations are pre-configured.
To create or edit a composite operation:
1. Enter the context of a QoS list.
2. Type the composite-operation command, followed by an index number. The number
must be 12 or higher, since numbers 1 through 11 are assigned to pre-configured lists.
3. Use one or more of the following commands to set the parameters of the composite
operation:
- dscp — determines the value to which the rule resets the packet's DSCP field. To ignore
the DSCP field, use the argument no change, or use the command no dscp.
- cos — determines the value to which the rule resets the packet's CoS field. To ignore the
CoS field, use the argument no change, or use the command no cos.
4. Use the name command, followed by a text string, to assign a name to the composite
operation. You must assign a name to the composite operation, because when you attach
the composite operation to a rule, you use the name, not the index number, to identify the
composite operation.
Composite operations
Issue 1.1 June 2005 459