For a network port, the scheduling behavior is similar to Scheduling with SAP-based queues on access ports, except that a per-SAP scheduler is not present in the hierarchy. Instead, the per-port scheduler distributes the available port bandwidth to all the queues configured on the port in two passes using similar behavior to the per-SAP scheduler. Additionally, all traffic sent out on the network port uses a set of eight queues that are mapped to the eight forwarding classes. The following figure shows this behavior.
Figure: Scheduling on network ports
