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Assigning the Default Frame Relay Discard Eligibility Loss Priority Map to an Interface

For interfaces with the Frame Relay encapsulation on M120 routers, M320 routers with Enhanced III FPC, M7i and M10i routers with Enhanced Compact Forwarding Engine Board, and MX Series routers, you can set the loss priority of Frame Relay traffic based on the discard eligibility (DE) bit. For each incoming frame with the DE bit containing the class-of-service (CoS) value 0 or 1, you can configure a Frame Relay loss priority value of low, medium-low, medium-high, or high.

The default Frame Relay loss priority map contains the following settings:

The default map sets the loss priority to low for each incoming frame with the DE bit containing the CoS value 0. The map sets the loss priority to high for each incoming frame with the DE bit containing the CoS value 1.

To assign the default Frame Relay DE loss priority map to an interface:

  1. Include the frame-relay-de default statement at the [edit class-of-service interfaces interface-name unit logical-unit-number loss-priority-maps] hierarchy level.

    For example:

  2. Verify the configuration in operational mode.