both RAC instances crash - 11.2.0.3

Hi
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DB Details: Enterprise Edition Release 11.2.0.3.0
OS Details: Red Hat Enterprise Linux Server release 5.8
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we had both RAC instances crashes.
we tried to understand why after netwrok failure including interconnect network , RAC02 was down as well.
the first RAC - RAC01 got disconnected from network due to firmware error:

RAC01 OS log:
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Mar 13 03:08:27 rac01 kernel: net eth0: firmware hang detected
Mar 13 03:08:27 rac01 kernel: net eth1: firmware hang detected
Mar 13 03:08:27 rac01 kernel: bonding: bond1: link status definitely down for interface eth1, disabling it
Mar 13 03:08:27 rac01 kernel: bonding: bond1: making interface eth3 the new active one.
Mar 13 03:08:27 rac01 kernel: net eth3: firmware hang detected