Stalled or Hanged Grid 11GR2 installation at 65% - Performing Remote Operations

In case the process of performing remote operations hangs while installing Rac then check your firewall and disable it using service iptables stop.
if the installation continues to work it is fine if it is not then deinstall and install again.
The process that is responsable for transporting is ractrans.
you can check it using command:
lsof -i:
sshd       3131  root    3u  IPv6   9635       TCP rac2.localdomain:ssh->192.168.0.1:savant (ESTABLISHED)
sshd       3131  root    7u  IPv4   9676       TCP localhost.localdomain:x11-ssh-offset (LISTEN)
sshd       3131  root    8u  IPv6   9677       TCP [::1]:x11-ssh-offset (LISTEN)
ractrans  18253  grid    0u  IPv4 100913       TCP rac2.localdomain:44281->rac1.localdomain:42729 (ESTABLISHED)
ractrans  18253  grid    3u  IPv4 100912       TCP *:44281 (LISTEN)