I have a Cisco 9404R running 16.9.5 with a C9400-LC-24XS line card for connecting access switches. Video conference unit connected to the access switch are marking the traffic and EPC's on the access switch uplinks to the core show the packets being marked as per the config of the VC unit AF41/dscp34 for voice and video. Run an EPC on the core for the up links from the access switch and the packets are marked dscp 0. Ran a span on the core for the same ports. packets marked at 0
the following command sh platform hardware fed switch active qos dscp-cos counters iif_id 0xa shows 83845753 against ingress DSC34 but doesn't increase while a conference call is in progress.