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Defining a Custom Frame Relay Loss Priority Map

You can apply a classifier to the same interface on which you configure a Frame Relay loss priority value. The Frame Relay loss priority map is applied first, followed by the classifier. The classifier can change the loss priority to a higher value only (for example, from low to high). If the classifier specifies a loss priority with a lower value than the current loss priority of a particular packet, the classifier does not change the loss priority of that packet.

To define a custom Frame Relay loss priority map, include the following statements at the [edit class-of-service] hierarchy level:

A custom loss priority map sets the loss priority to low, medium-low, medium-high, or high for each incoming frame with the DE bit containing the specified 0 or 1 CoS value.

The map does not take effect until you apply it to a logical interface. To apply a map to a logical interface, include the frame-relay-de map-name statement at the [edit class-of-service interfaces interface-name unit logical-unit-number loss-priority-maps] hierarchy level: