I see that TLS 1.1 isn´t supported, then old devices has problem with PNP, however in this document which explains how to activate TLS 1.1: https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/hardening_guide/b_cisco_catalyst_center_security_best_practices_guide.html#task_vq4_yyk_ybb
the command does not work on the ESX platform, as it also stated in the document:
"CLI commands can change from one release to the next. The following CLI example uses command syntax that might not apply to all Catalyst Center releases, especially Catalyst Center on ESXi releases."
So, anyone got the commands so I can activate TLS 1.1 on my server!
ps. use: openssl s_client -connect x.x.x.x:443 -tls1_1 to check what your server support!
/Fredrik