Ingress shaping — ATM layer ingress shaping is not supported. Packet level shaping is supported as per the service ingress QoS policy applied to the ATM SAP.
Egress shaping — ATM layer egress shaping is supported for CBR, rt-VBR, and nrt-VBR VCs. A CBR VC is shaped to a single leaky bucket with parameter PIR. An rt-VBR VC or an nrt-VBR VC is shaped to two leaky buckets with parameters PIR and {SIR, BT}, where BT is the Burst Tolerance and is a function of the MBS parameters configured by the user in the traffic descriptor.
In the egress direction, packet level shaping is supported as per the service egress QoS policy applied to the ATM SAP.