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Proposed Design

The transport of Fibre Channel traffic over an Ethernet infrastructure is standardized in a catchy technology called Fibre Channel over Ethernet (FCoE). FCoE defines a network adapter for the Fibre Channel devices—a converged network adapter (CNA)—and places the Fibre Channel stack on top of the LAN stack, as shown in Figure 8-3.

FCoE protocol stack

Figure 8-3. FCoE protocol stack

The concept was simple enough: install a new adapter in the local server and send the traffic over the metropolitan-area (metro) Ethernet service, then sort it out on the far end. But of course, the devil is in the details. There were a number of technical hurdles that had to be crossed to assure a successful installation.


  

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