Hello,

I have an Xbox Series X/S connected via ethernet to my RB5009 (which has Simple Queues enabled using fq_codel). I just noticed my Xbox connection settings have an option for QoS tagging - both for DSCP and WMM. How do I interpret this tagging from the Xbox on my RB5009 so that these packets get a high priority?

I would like to know this aswell.
RB5009 does not support QoS.
RB5009 can only do Queues. Limiting traffic speed and such

You need the CRS series for that.