CRS-4640 Error on Starting 11gR2 clusterware

I was working on a issue where in Clusterware was not coming up as private interface was down. Following errors were recorded in ocssd.log which informed that issue was with private interface 2011-08-31 15:03:38.051: [ CSSD][1090451776]clssnmvDHBValidateNCopy: node 2, testrac2, has a disk HB, but no network HB, DHB has rcfg 205815745, wrtcnt, 4418998, LATS 4634324,…