By default, all of the FlexFabric FC-capable uplinks are configured as Ethernet until they are configured as part of the VC SAN fabric. After the FC-capable uplinks are configured as part of the VC SAN fabric, the FC SFP transceivers connected to those uplinks become enabled and allow connectivity to the data center SAN fabric.

To create a proper Virtual Connect fabric, all VC-FC or FlexFabric module uplinks that are included in the fabric must be connected to the same SAN fabric as shown in the following figure.

If the VC SAN fabric uplinks are not connected to the same SAN fabric as shown in the following figure, then the fabric becomes degraded and a log message indicates that the uplinks are connected to different SAN switches. The WWN of the principal fabric switch indicates connectivity to the same SAN fabric in Virtual Connect.

Virtual Connect fabrics 146