Hi All,
Thank for your inputs. Sorry for the reply.
The issue is not with the connectivity, as I tested the servers in Deployer page, they were all successful.
But when I create a deployment set, the servers are not getting listed. May be a UI issue?? not very sure.
Answering the above questions -
- As asked, IS version is 8.0 SP1, with Fix12.
- Yes, the Deployer is not in the same server as of PRT.
- MWS is working fine, with PM’s and their instances.
Last week, we had to uninstall our Deployer instance and reinstal (because of someother issue). After this fresh install, everything is working fine. Only sad part is that we could point to the root cause. 
Thank you all once again!
regards,
Naidu
#Integration-Server-and-ESB#webMethods-General#webMethods