# esxcfg-vswitch -l
Switch Name Num Ports Used Ports Configured Ports MTU Uplinks
vSwitch0 32 10 32 1500 vmnic1,vmnic0,vmnic2
PortGroup Name VLAN ID Used Ports Uplinks
VM Network 0 2 vmnic2,vmnic0,vmnic1
Service Console 0 1 vmnic0,vmnic2,vmnic1
iSCSI 2 0 1 vmnic2,vmnic0,vmnic1
iSCSI 1 0 1 vmnic1,vmnic0,vmnic2
VMkernel 0 1 vmnic0,vmnic2,vmnic1
#
In each of the iSCSI VMKernels, I have it set to one active and the others standby. Each of them use a different one as active.