Description: This attribute has been obsoleted and migrated under the Cbr subcomponent. In addition, the type and range of the new attribute have been changed. This attribute specifies the tolerable cell loss ratio (CLR) for CBR traffic. The number is the logarithm (base 10) of the CLR. In other words if the target CLR = 1E-10 then cbrCellLossRatio = -10. This number must be the same as the vbrRtCellLossRatio since CBR and rt-VBR traffic have the same discard priority. The cbrCellLossRatio is used by the Connection Admission Control (CAC) algorithm to compute the required (equivalent) cell rate for CBR connections.

There is a trade-off between the service category CLR and the achievable link utilization. To guarantee an excellent service category, the CLR should be as small as possible (e.g., 1E-10). However, a smaller CLR results in a larger equivalent cell rate for a given connection and hence a lower link utilization.