Hello,
Sorry for not updating the case earlier. The issue got fixed after importing the self signed cert chain into java keystore.
The problem I had was that the pxgrid cert was signed using system and IDC was not trusting the pxgrid cert.
Also the ISE ver 3 with patch 3 was having a bug that everytime you patch/upgrade ISE, the self signed cert also get renewed, which is fixed in patch 4 and above.
Conclusion, the IDC and PxGrid 2 works fine with right set of certs in the java keystore.
Thanks and Regards,
Lolith