25.5. Configuring a Fibre Channel over Ethernet Interface

Procedure 25.10. Configuring an Ethernet Interface to Use FCoE

1. To configure a new VLAN, make a copy of an existing network script, for example /etc/fcoe/cfg-eth0, and change the name to the Ethernet device that supports FCoE. This provides you with a default file to configure. Given that the FCoE device is ethX, run:

   # cp /etc/fcoe/cfg-ethx  /etc/fcoe/cfg-ethX

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   Modify the contents of cfg-ethX as needed. Notably, set DCB_REQUIRED to no for networking interfaces that implement a hardware Data Center Bridging Exchange (DCBX) protocol client.
2. If you want the device to automatically load during boot time, set ONBOOT=yes in the corresponding /etc/sysconfig/network-scripts/ifcfg-ethX file. For example, if the FCoE device is eth2, edit /etc/sysconfig/network-scripts/ifcfg-eth2 accordingly.
3. Start the data center bridging daemon (dcbd) by running:

   # systemctl start lldpad
   

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4. For networking interfaces that implement a hardware DCBX client, skip this step.
   For interfaces that require a software DCBX client, enable data center bridging on the Ethernet interface by running:

   # dcbtool sc ethX dcb on
   

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   Then, enable FCoE on the Ethernet interface by running:

   # dcbtool sc ethX app:fcoe e:1
   

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   Note that these commands only work if the dcbd settings for the Ethernet interface were not changed.
5. Load the FCoE device now using:

   # ip link set dev ethX up
   

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6. Start FCoE using:

   # systemctl start fcoe
   

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   The FCoE device appears soon if all other settings on the fabric are correct. To view configured FCoE devices, run:

   # fcoeadm -i
   

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