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Configuring RED Drop Profiles

You enable RED by applying a drop profile to a scheduler. When RED is operational on an interface, the queue no longer drops packets from the tail of the queue. Rather, packets are dropped after they reach the head of the queue.

To configure a drop profile, include the drop-profiles statement at the [edit class-of-service] hierarchy level:



[edit class-of-service]

drop-profiles {



profile-name {

fill-level percentage drop-probability percentage;



interpolate {

drop-probability [ values ];

fill-level [ values ];
}


}


}

In this configuration, include either the interpolate statement and its options, or the fill-level and drop-probability percentage values. These two alternatives enable you to configure either each drop probability at up to 64 fill-level/drop-probability paired values, or a profile represented as a series of line segments, as shown in Figure 9.

After you configure a drop profile, you must assign the drop profile to a drop-profile map, and assign the drop-profile map to a scheduler, as discussed in Configuring Schedulers.

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