go to OS admin and certificate management.1) Regenerated ipsec.pem certificate on all server.2) Restarted DRS Master and local on PUB DRS local on all SUB.this should fix your issue

You have to log in Cisco Unified Operating System Administration for your CUC, then click on Security - Certificate management.Then Click on Select the CA Signed Tomcat Certificate , click on Generate CSR. Answer that you have Tomcat Selected. Then C...