So I was reading through the HP Lefthand SAN best practices and they mention connecting the two iSCSI switches together. I was thinking through this in my head and this is going to create a loop and cause spanning tree to kick in a block one of the connections somewhere, right? The configuration I have is two Cisco 2960Gs with a mirrored config, both switches are setup the same. Half the ports are on VLAN1 for basic network connectivity to the servers and the other half are on VLAN2 for iSCSI.
The link in question is the green one. Is there anyway I could prevent STP from cutting one of these links? It doesn't seem like it would buy me anything if one switch looses it's connection to the core. Could I just remove VLAN2 from the trunks that run back to the core? I tried this in packet tracer and it still caused spanning tree to block a port but I never trust packet tracer. There is no need for VLAN2 to be accessible anywhere else