WLAN QoS Profile Not Tagging Frames

Sam Brynes — Mon, 05 Jul 2021 17:57:45 GMT

I have a Cisco WLC 2504 with the default QoS profiles defined (Wireless Section > QoS > Profiles). I have a WLAN tied to the Bronze (background) QoS profile.

When I did a SPAN and Wireshark on my Cisco switch, I expected to see frames with the 802.1p tag with a value of 1 (as defined by the QoS profile), but the tag was still set at 0 (BE), the default. The QoS profile for Bronze is set to the 802.1p value of 1.

Does anyone know what might be the issue? I do not have Fastlane enabled.

Re: WLAN QoS Profile Not Tagging Frames

Rasika Nayanajith — Sun, 08 Sep 2019 20:33:50 GMT

Hi Sam,

What QoS value trusted on switchport connected to AP & WLC ? CoS or DSCP

Now a days best practice is trust DSCP on all of these ports (earlier it was recommend to trust CoS on WLC connected turnk ports)

Here is what I observed with AireOS 7.0.x long time back (with bronze profile, it map to 802.1p value to 0)

https://mrncciew.com/2012/12/02/understanding-wireless-qos-part-3/

You should watch this Ciscolive session to learn how to configure QoS on latest AireOS codes. You should not use QoS profiles/802.1p values any more.

QoS Design and Deployment for Wireless LANs - BRKRST-2515

HTH

Rasika

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WLAN QoS Profile Not Tagging Frames

Re: WLAN QoS Profile Not Tagging Frames