topic C9800 with Forescout RADIUS in Wireless

C9800 with Forescout RADIUS

bakaholic39 — Mon, 16 Mar 2026 05:27:53 GMT

Hi all!

Has anyone used the C9800 with Forescout as a RADIUS server? I’d like to know if you’ve encountered any issues, particularly with newer C9800 versions such as 17.15.x or 17.18.x.

Re: C9800 with Forescout RADIUS

balaji.bandi — Mon, 16 Mar 2026 09:27:14 GMT

I take this as 802.1x integration, I do not see any issue technically as long as most of the RADIUS are developed industry standards.

WLC 9800 check below guide straight forward : (make sure check the code bug you mentioned).

https://www.cisco.com/c/en/us/support/docs/wireless/catalyst-9800-series-wireless-controllers/213919-configure-802-1x-authentication-on-catal.html

check this video (some how not able to visit the vendor website what changed recently) the site get 403 error.

https://www.youtube.com/watch?v=e6wbuIWPDD8

Re: C9800 with Forescout RADIUS

Rich R — Sun, 22 Mar 2026 22:45:28 GMT

As @balaji.bandi says radius is a standard so as long as the radius server is standards compliant there is no reason why it should not work. We use Free Radius.