The bnx driver provides support for the Broadcom NetXtreme II gigabit Ethernet interface, while the bge driver provides support for the Broadcom NetXtreme I gigabit Ethernet interface. The bnx driver does not encounter any problems if only two NetXtreme II interfaces are present. However, when four, or more interfaces are present on a system, such as the BladeCenter LS41 server with a Multiprocessor Expansion Unit (MPE) attached, failures occur in the form of system panics.
Workaround: Download and install the latest version of the Broadcom bnx driver for the Solaris OS.
For further instructions, see Troubleshooting the Solaris 10 11/06 Installation on IBM BladeCenter LS21, LS41, and HS21 Servers.