I'm not familiar with switch ICs, do the ones you've been looking at provide any kind of VLAN functionality, or are they just "dumb" everything-on-the-same-Ethernet segment type things?
I suspect it would be too slow, but would software switching on the management board be an option (e.g. a 1GbE link between it and each node with any arbitrary bridging setup you can imagine between them on the management board end).
I'm not familiar with switch ICs, do the ones you've been looking at provide any kind of VLAN functionality, or are they just "dumb" everything-on-the-same-Ethernet segment type things?
I suspect it would be too slow, but would software switching on the management board be an option (e.g. a 1GbE link between it and each node with any arbitrary bridging setup you can imagine between them on the management board end).