QoS at SC2000

Used Internet 2 QoS (diffserve) testbed on the Abilene network
Network link was congested to 100% at two points
Audio packet traffic was marked at the edges of the network for priority handling
With priority queuing enabled, audio traffic passed as smoothly as with an uncongested, overprovisioned network
With priority queuing disabled music was completely unintelligible

Used Internet 2 QoS (diffserve) testbed on the Abilene network