Hardware Installation and Maintenance Guide, Version 11.60.2 - Configuring the switches

You configure the switches according to the vendor’s recommendations for iSCSI. These recommendations might include both configuration directives as well as code updates.

You must ensure the following:

You have two separate networks for high availability. Make sure that you isolate your iSCSI traffic to separate network segments.
You have enabled send and receive hardware flow control end to end.
You have disabled priority flow control.
If appropriate, you have enabled jumbo frames.

Note:

Port channels/LACP is not supported on the controller's switch ports. Host-side LACP is not recommended; multipathing provides the same, and in some cases better, benefits.
Forward Error Correction (FEC) must be turned off for 25G iSCSI network.

Configuring the switches - iSCSI, VMware