400-007: Cisco Certified Design ExpertDemo

Priority queuing is designed for small, delay-sensitive real-time flows that require very low latency and jitter. Large or bandwidth-hungry transactions can consume the strict-priority service and adversely affect other queues. WRED is generally used for TCP congestion management, while traffic that tolerates packet loss does not require priority treatment. Cisco documents priority queuing as providing low-latency treatment for latency- and jitter-sensitive applications.