General
telnet to SN from WCM after upgrade the CSR 17.3 to 17.3 from vManage
Symptom
telnet and traffic not optimization after upgrade the CSR1k to CSR8k and also CSR8k to CSR1k
Conditions
doing upgrade the CSR1k CSR8k when appnav xe cluster in active
Workaround
delete active appnav xe cluster and recreate it
Further Problem Description