After you reimage an Exalogic compute node from Oracle Linux to Oracle VM Server, each compute node (dom0) has the following network configuration:
Bonded bond0 interface over the eth0 interface
Xen bridge interface (xenbr0) on top of bond0 - the xenbr0 interface holds the eth interface IP.
Bonded bond1 interface over ib0 and ib1 interfaces - this is the IPoIB interface for the default InfiniBand partition.