Our Server admin and i have been trying to figure something out. We currently have a IBM H series bladecenter with 6 bladeservers that have two NICs. We have two of the CIGSM switches in the chassis. Each server NIC connects to the two switches individually. We're looking to add two additional NICs using the Ethernet Expansion Card for bladeservers. If i add two more NICs (4 total) will i need 4 of the CIGSM switches in the chassis? One switch to every NIC? I know this more of an IBM question but we can't seem to find any answers to this.
If you need to connect multiple NICs from your servers to the 3100 switches and create a portchannel and have redundancy, then you need to stack them so they all look like one switch logically. I do this with IBM chassis and 3110 switches.