Backbone Diffserv Configuration (3):mDRR Tuning
Using MQC, can specify bandwidth in %
For legacy mDRR configuration, tuning is a little more complicated:
mDRR queue quantum = MTU (4470) + (w – 1) * 512
If wbus = 73, quantumbus = MTU + 72 * 512 = 41334 bytes
If wint = 1, quantumint = MTU = 4470 bytes
Bus share = 41334 / (41334+4470) = 90%
mDRR smallest weight should be as small as possible to ensure minimum latency between two consecutive services of the same queue