The 2401 is a switch and not a passthrough there is not a one to one mapping, all ports can talk to all of the other ports.
We have VMware ESXi on Dell VRTX blade. It has 8 external port and 16 internal port (4 port * 1 blade). We have connected cables as per below,   External port 1 - VLAN 10 (MGMT / vMotion) External port 2 - VLAN  20 (Backup) External port 3 -  Trunk port External port 4 -   Trunk Port External port 5 - VLAN 10 (MGMT / vMotion) External port 6 - VLAN  20 (Backup) External port 7 -  Trunk port External port 8 -   Trunk Port  Can anyone please let me know how the mapping of external port is happening with internal port at the ESXi level. We can see 4 NIC adaper at each of the ESXi console. Not sure, how they are communicating/mapping with external switch.  
Dell VRTX Switch port mapping