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Monitoring CoS RED Drop Profiles

To display data point information for each CoS random early detection (RED) drop profile currently on a system, select Monitor>Class of Service>RED Drop Profiles in the J-Web interface, or enter the following CLI command:

show class-of-service drop-profile

Table 55 summarizes key output fields for CoS RED drop profiles.

Table 55: Summary of Key CoS RED Drop Profile Output Fields



Additional Information

RED Drop Profile Name

Name of the RED drop profile.

A drop profile consists of pairs of values between 0 and 100, one for queue buffer fill level and one for drop probability, that determine the relationship between a buffer's fullness and the likelihood it will drop packets.

To display profile values, click the plus sign (+).

Graph RED Profile

Link to a graph of a RED curve that the system uses to determine the drop probability based on queue buffer fullness.

The x axis represents the queue buffer fill level, and the y axis represents the drop probability.


Type of a specific drop profile:

  • interpolated—The two coordinates (x and y) of the graph are interpolated to produce a smooth profile.
  • segmented—The two coordinates (x and y) of the graph are represented by line fragments to produce a segmented profile.

For information about types of drop profiles, see the JUNOS Class of Service Configuration Guide.



Internal index of this drop profile.


Fill Level

Percentage fullness of a buffer queue. This value is the x coordinate of the RED drop profile graph.


Drop Probability

Drop probability of a packet corresponding to a specific queue buffer fill level. This value is the y coordinate of the RED drop profile graph.


For more information about the J-Web Monitor task, see Monitor Tasks.

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