Sending the GBR or MBR Values to Cisco Ultra Traffic Optimization
If the flow level MBR is greater than the APN-AMBR for a non GBR bearer, traffic is throttled at APN-AMBR. In such a case APN-AMBR is sent as the upper limit to the CUTO library. If there is no valid flow level MBR specific to the flow, APN-AMBR is sent as the upper limit to the CUTO library.
For a GBR bearer, the flow level GBR is sent as the lower limit and flow level MBR is sent as the upper limit to the CUTO library.