Switch is TP-Link TL-SG1024 24 port gigabit rackmount dumb switch. Built in NIC is Intel 82583V gigabit.
Output of ifconfig:
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=4019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,VLAN_HWTSO>
ether...