Considerations for using software iSCSI port binding in ESX/ESXi (2038869)

In this sample scenario, there are multiple VMkernel ports in on different IP subnets and broadcast domains and the target ports also reside in a different IP subnet and broadcast domain. In this case, you should not use port binding.If you configure port binding in this configuration, you may experience these issues:

In this scenario, there are multiple VMkernel ports, all residing in the same IP subnet and broadcast domain. In this case, you must use port binding. If you do not configure port binding in this configuration, you may experience these symptoms:

Note: There have been limitations in the past when using software iSCSI when the iSCSI initiator and target had to be on the same subnet. With vSphere 6.5, the software iSCSI initiator and target can be on different subnets, but not when using software iSCSI port binding. For more information, see What’s New in VMware vSphere 6.5 and Requirements for iSCSI Port Binding.