The adapter cards and ports that support 4-priority scheduling for network egress traffic on Gen-3 hardware are identified in Table: Scheduling Modes Supported by Adapter Cards and Ports at Network Egress. This type of scheduling takes into consideration the traffic’s profile type and the CoS queue priority. It also uses priority information to apply backpressure to lower-level CoS queues. See QoS for Gen-3 Adapter Cards and Platforms for details.