Configuring FCoE on Nexus 5K

A simple FCoE topology with NPV/NPIV setup

Sample Configuration Steps on a FCoE supported Nexus 5k switch:-

Ensure FCoE license is installed on the switch. Confirm the same using 'show license usage' command. If missing, please install it using 

interface Ethernet1/1
  flowcontrol receive on
  flowcontrol send on

1. Configure a vfc interface

2. Allow a vsan on it.

3. Bind the interface to a physical interface 

4. In vsan database, add this vsan also to the interface vfc

The above steps completes vfc instantiation, allowing a vsan on the interface and add the vfc to a particular vsan in the database. Most importantly it binds the vfc to a physical interface as well.

Lastly, create a FCoE vlan, and map the vlan to a vsan as well.

Port flap on the vfc and/or physical interface may be required to bring up the vfc interface.

References :- A very detailed explanation of various topologies supported in FCoE NPV is mentioned in here and here