Ethernet and fibre Channel are mature standards that have evolved over time thanks to substantial long-term investments, and both-along with Infiniband-have significant market share in the data center. However, due to the drive for larger, more efficient data centers, each of these technologies has faced significant scaling challenges. The development of extensions to these standards-in particular data Center Bridging (dCB) and fibre Channel over Ethernet (fCoE)-have for some time been promoted as a way of providing the necessary capabilities for true network convergence.