Abstract
In this invited tutorial paper, we review the changing nature of data center networks and the role
played by optoelectronics in future network designs. Conventional network protocols will be reviewed, including
Ethernet, Fibre Channel, and InfiniBand, and requirements for WAN connectivity between data centers. The transition to
converged networks based on lossless Ethernet will be discussed, including FCoE and RoCE protocols. Industry roadmaps
for bandwidth, port density, and scalability of optical links will be presented, and optical transceiver form factors
including QSFP, CFP, and active optical cables will be discussed. The role of software defined networking (SDN) in
next generation data center networks will also be presented in this context.
© 2013 IEEE
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