If you are configuring IPMP network redundancy, note that the achievement of network resilience (enabling a blade to recover from different hardware and network failures) depends upon each IPMP group containing one connection to each switch. A configuration in which both interfaces in a group of two were connected to the same switch would not continue to transport network traffic if that switch failed.
For information about configuring the blade to use IPMP, refer to the chapter entitled “Configuring IPMP for Network Resiliency on Solaris x86 Blades” in the Sun Fire B100x and B200x Server Blade Installation and Setup Guide.