PFC Hardware QoS Queuing Interface Commands

These interface commands are for PFC QoS Queuing, such as enabling WRED, configuring CoS-to-Q mappings, queue sizes and bandwidth per queue.

mls qos queue-mode mode-dscp (WS-X6708 cards only – other 10Gs?)

rcv-queue random-detect

rcv-queue queue-limit

rcv-queue cos-map
rcv-queue dscp-map

rcv-queue threshold

wrr-queue random-detect
wrr-queue random-detect min-threshold
wrr-queue random-detect max-threshold

wrr-queue queue-limit – Queue Depth
wrr-queue bandwidth – WRR Scheduling
wrr-queue threshold – tail drop

wrr-queue cos-map
priority-queue cos-map

Classification, policing and marking are done with MQC PFC QoS, see the post at

Simon Birtles

I have been in the IT sector for over 20 years with a primary focus on solutions around networking architecture & design in Data Center and WAN. I have held two CCIEs (#20221) for over 12 years with many retired certifications with Cisco and Microsoft. I have worked in demanding and critical sectors such as finance, insurance, health care and government providing solutions for architecture, design and problem analysis. I have been coding for as long as I can remember in C/C++ and Python (for most things nowadays). Locations that I work without additional paperwork (incl. post Brexit) are the UK and the EU including Germany, Netherlands, Spain and Belgium.