qos for skype traffic prioritize

[gavin han]

how to prioritize skype traffic in QOS? does skype tag traffic with DSCP?

[Mark Malone]

Hi 

Take a look at this link it has the dscp chart on what Skype requires voice /video/signalling to work with qos , auto qos should cover this in the LAN but your MQC qos should have same values for the WAN too to keep it consistant if that's what your doing across the network as that's where your bottleneck usually occurs

https://skype4b.uk/2015/09/07/skype-for-business-configuring-quality-of-service-qos/

[gavin han]

Thanks Mark. I enabled auto qos on 3850 but looks like it only prioritized "EF" traffic. so looks like I will have to manually configure MQC to proritize video traffic etc. how much bandwidth do you recommend to reserve for video as best practice?

I also noticed that IOS-XE does only MQC qos. I didn't see srr-queue, wrr-queue commands to reserve bandwidth on queues. does it all automatically take place based on MQC QoS config?