Symptom

CTS server test feature is globally disabled on switch (no cts server test all enable), but switch still sends probes to ISE and it's filling live logs with failed attempts. TWINNYADAM#show cts server-list CTS Server Radius Load Balance = DISABLED Server Group Deadtime = 20 secs (default) Global Server Liveness Automated Test Deadtime = 20 secs Global Server Liveness Automated Test Idle Time = 60 mins Global Server Liveness Automated Test = DISABLED Installed list: CTSServerList1-0001, 1 server(s): Server: X.X.X.X, port 1812, A-ID 5AE112384E15E8F29518D0429B788BEC Status = ALIVE flag(0x10) auto-test = FALSE, keywrap-enable = FALSE, idle-time = 60 mins, deadtime = 20 secs List of servers with AID 5AE112384E15E8F29518D0429B788BEC: Server: X.X.X.X:1812

Conditions

CTS server test is disabled on switch

Workaround

Create collection filter for this username on ISE so that it doesn't fill ISE live Logs.

Further Problem Description