Troubleshooting TrustSec


So today i spent some time setting up Cisco TrustSec on my ISE installation as well as my Catalyst 3650 switch. I did all the mandatory configuration on the switch, including:

  • Setting up ISE / Radius with a pac key.
  • Setting up a CTS authorization list that references the ISE / Radius server.
  • Setting up device credentials on the Switch.
  • Setup ISE to allow TLS 1.0 (this is required in order to get a PAC key assigned from ISE).
  • Getting the PAC key on the Switch.

Everything was looking good so far, but for the life of me i could not get the environment data from ISE. This was even though ISE said it was sending it back to the Switch, which i could verify from the Radius Live Logs.

After about 2 hours of searching online and looking at the Bug Search Tool, i decided to check out my radius attributes.

BAM! - right there i had set the attribute 6 as “mandatory”. This has been an issue for me in the past with Dot1X. After correcting my mistake and setting it to “on-for-login-auth” and clearing + refreshing environment data, everything worked!

Such a simple mistake causing so much grievance!

Anyways, i leave it here for others to learn from my mistake.

Now i can proceed to the next part in the TrustSec journey!

Take Care!!

/Kim