Shaper policies define dual-rate shaper parameters that control access or network traffic by providing tier-3 aggregate shaping to:
shaped and unshaped SAP traffic for access ingress flows
shaped and unshaped SAP traffic for access egress flows
shaped and unshaped VLAN traffic for network egress flows
For network egress traffic on a non-hybrid Gen-3 port, the CIR value of the shaper group is ignored because of the behavior of the 4-priority scheduler on Gen-3 hardware at network egress. For more information, see QoS for Gen-3 Adapter Cards and Platforms.
See Per-SAP Aggregate Shapers (H-QoS) On Gen-2 Hardware and Per-VLAN Network Egress Shapers for details on per-SAP and per-VLAN shapers.