Hello Mike,
this is from the relevant Q&A: QoS to DSCP mapping is supported:
Q. What features are supported on the Cisco EtherSwitch HWICs?
A. The following features are supported on the Cisco EtherSwitch HWICs:
Up to 15 individual VLANs per 4- or 9-port Cisco EtherSwitch HWIC
IEEE 802.1Q tagged and untagged VLANs
Virtual Trunking Protocol (VTP) support for client, server, and transparent modes
Layer 2 MAC-related feature support:
Secure MAC addresses
Static and Dynamic MAC addressing
2000 MAC addresses
Port application support
SPAN port monitoring
Per-port storm control for broadcasts, unicasts, and multicasts
QoS feature support
IEEE 802.1p class-of-service (CoS) priority for 802.1Q tagged frame
Port-based priority for native frames
Port priority to overwrite the IEEE 802.1p priority
Strict priority and Weighted Round Robin CoS policies
CoS-to-differentiated services code point (DSCP) mapping
Internet Group Management Protocol (IGMP) snooping
Network Time Protocol (NTP) support
IEEE 802.1D spanning tree and Spanning Tree Protocol PortFast
Secure port filtering (200 secure MAC addresses)
Simple Network Management Protocol (SNMP) support
Telnet client and server support
Cisco Discovery Protocol Versions 1 and 2 support
Fallback bridging
802.1x authentication
IEEE 802.3af-compliant PoE
Q. What features are not supported on the 4- and 9-port Cisco EtherSwitch HWICs?
A. The following features are not supported on the Cisco EtherSwitch HWICs:
Layer 3 switching (this is done through the router)
Dynamic VLAN for access port
VTP pruning
Network port
Routed port
Per-port enabling and disabling of unknown multicast and unicast packets
Cisco Group Management Protocol (GMP) client
Rate limiting
Cisco Cluster Management Suite (CMS) support
HTH,
GP
