Setting Up a Port CoS Mapping Configuration Job

Updated on 19 Dec 2023
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A port CoS mapping is used to control the class of service assigned to the outer VLAN tag of input frames on which a dual VLAN tag action (e.g. push-push or push-replace) was applied in the unit. There is one configurable port CoS mapping for each physical or logical (LAG) port in the system.

The Port CoS mapping defines how to map the PCP (Priority Code Point) value of the outer VLAN tag based on the conformance level (Green/Yellow) of the outgoing frame and on the PCP value of its inner VLAN tag.

The mapping configuration is a translation table from one Service Provider's priority scheme to another's. Consequently, if you are not putting traffic through multiple Service Providers' networks, you do not need to modify the values in this page.

To configure a Port CoS mapping

Access the page Commission ▶ Jobs.
Set all common configuration job settings, as described in "Creating Configuration Jobs in GUI Mode" and in "Creating Configuration Jobs Using Data Sets".
Select Port CoS Mapping in the left pane. The Port CoS Mapping tab is displayed.
Complete all fields of the Port CoS Mapping tab as required.
Use the Add button or Duplicate button to add Port CoS Mapping settings as required. For more information on specific parameters, see the table below.

Note: When duplicating a row, always select the row to duplicate before clicking the Duplicate button.

Click Apply, then click Close.
Click the Refresh button to refresh the user interface.

Port CoS Mapping tab (Commission ▶ Jobs)
General

Parameter	Description
Port Name	The outgoing port (physical or LAG) to which this CoS mapping applies.
Encode using DEI	Select this box to instruct the unit to control the DEI (Drop Eligible Indicator) bit in the outer S-VLAN or T-VLAN tag. If this field is enabled and the outgoing frame is marked yellow, then the DEI bit is set to 1; if not, the DEI bit is set to 0. Note: If your network supports this feature, it is recommended that you enable this box.

Parameter

Description

Port Name

The outgoing port (physical or LAG) to which this CoS mapping applies.

Encode using DEI

Select this box to instruct the unit to control the DEI (Drop Eligible Indicator) bit in the outer S-VLAN or T-VLAN tag.

If this field is enabled and the outgoing frame is marked yellow, then the DEI bit is set to 1; if not, the DEI bit is set to 0.

Note: If your network supports this feature, it is recommended that you enable this box.

PCP 0-7

Parameter	Description
Green 0-7	Make a selection from the drop-down list to assign a CoS- to-PCP value (0-7) for use in the outer VLAN tag of outgoing green frames. This value is selected if: The result of the bandwidth regulator assigned to this entry is green. The pre-marking color is green and no bandwidth regulator is assigned to this entry.
Yellow 0-7	Make a selection from the drop-down list to assign a CoS- to-PCP value (0-7) for use in the outer VLAN tag of outgoing yellow frames. This value is selected if: The result of the bandwidth regulator assigned to this entry is yellow. The pre-marking color is yellow and no bandwidth regulator is assigned to this entry. The frame has passed through a color-aware bandwidth policer and has been marked as yellow due to the depletion of its CIR bucket.

Parameter

Description

Green 0-7

Make a selection from the drop-down list to assign a CoS- to-PCP value (0-7) for use in the outer VLAN tag of outgoing green frames.

This value is selected if:

The result of the bandwidth regulator assigned to this entry is green.
The pre-marking color is green and no bandwidth regulator is assigned to this entry.

Yellow 0-7

Make a selection from the drop-down list to assign a CoS- to-PCP value (0-7) for use in the outer VLAN tag of outgoing yellow frames.

This value is selected if:

The result of the bandwidth regulator assigned to this entry is yellow.
The pre-marking color is yellow and no bandwidth regulator is assigned to this entry.
The frame has passed through a color-aware bandwidth policer and has been marked as yellow due to the depletion of its CIR bucket.

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Setting Up a Port Configuration Job