PXF4336 Datasheet, PDF (90/425 Pages) Infineon Technologies AG – ABM Premium ATM Buf fer Manager

ABM-P
PXF 4336 V1.1
Functional Description
Note that the PCR limiter does not make use of the tolerance CDVT_PCR where
transmission at higher rates than PCR would be possible. However, CDVT_PCR is
primarily intended to allow cell clumping and other networks artifacts, not to allow a
higher rate. As mentioned earlier, this more rigid shaping does not violate PCR
conformance.
3.4.2.4.4 Shaping for CBR conformance
In cases where simple PCR limitation is not sufficient for service categories that define
a PCR conformance only, such as CBR, it is possible to use the leaky bucket shaper with
parameters TS=1/PCR and tau=CDVT_PCR. The parameter TP can be set to any suitable
value to reflect higher allowed rates than PCR.
Data Sheet
90
2001-12-17