Cisco BPX-BXM-155-8DX Installation And Configuration Manual page 347

Chapter 21 Configuring ATM Connections
Traffic Policing Examples
Leaky Bucket 2
When CLP=Yes (UBR.2), CLP(0) cells that are compliant with leaky bucket 1 are sent to leaky bucket
2. Because SCR=0 for leaky bucket 2, the bucket is essentially always full, and all the CLP(0) cells sent
to leaky bucket 2 are therefore tagged with CLP being set to 1. This allows the network to recognize
these UBR cells as lower priority cells and available for discard in the event of network congestion.
Cisco BPX 8600 Series Installation and Configuration
21-55
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001