To see the definition of RED in a cluster from the OCR, we need to use the “oifcfg” command, it is located in the GRID_HOME within folder of the binary files, as in the example below, in Microsoft Windows platform.
C:\app\11.2.0\grid\BIN>oifcfg iflist -p -n
Public Network 10.211.100.0 PRIVATE 255.255.252.0
Private Network 188.8.131.52 PRIVATE 255.255.255.252
HTH – Antonio NAVARRO