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:
[edit class-of-service]
loss-priority-maps {
frame-relay-de map-name {
loss-priority (low | medium-low | medium-high | high) code-point (0 | 1);
}
}
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:
[edit class-of-service interfaces interface-name unit logical-unit-number loss-priority-maps] frame-relay-de map-name;