Which QoS features do Catalyst 4500/4000 switches that run CatOS support?
A. Catalyst 4500/4000 switches that run CatOS support input classification and output scheduling on Layer 2 (L2) ports. Refer to the document Installation and Configuration Note for the Catalyst 4000 Layer 3 Services Module for additional features that are available on Layer 3 (L3) Gigabit Ethernet interfaces.