The name of a task group active from 1995 to 1998 and responsible for adding traffic class expediting and dynamic multicast filtering to the IEEE 802.1D standard

The name is usually given to the method they devised for providing CoS (Class of Service) in Ethernet. Defines eight levels of priority using three bits in the 802.1Q header. Can be used to prioritize video and audio traffic within Ethernet switches.

See CoS