OpenShift 4.7 Disconnected/Offline Installation:

Installing OKD4.7 (4.7.0-0.okd-2021-05-22-050008) in a restricted environment/network. Bootstrap node is accessible and able to pull the images from the mirror registry. When I shoot the bootstrap-complete installation cmd. API came up and running but failed to connect to master nodes. I have added all the ports required for the offline setup still unable to establish the connection to master nodes.

It would be great if someone can assist.