The egress port scheduler is another QoS tool that provides multiple port queues and buffer and queue thresholds. The scheduler is used to prioritize the sequence in which packets leave the interface. Every packet is placed in a queue with a different priority. The queue system works very similarly to a local grocery store that has a general queue as well as an “express” queue for people with only a few items. Figure 19 illustrates express/priority and regular queues.