Krishna Mallampati, PLX Technology
embedded.com (March 08, 2014)
Until now, the boundaries between PCI Express (PCIe) and Ethernet were clearly defined -- PCIe as a chip-to-chip interconnect, and Ethernet as a system-to-system technology. There are good reasons (and a few less good) why these two technologies have both endured and co-existed. While nothing is on the horizon that will change this, PCIe is showing signs of growing and competing with Ethernet for space that was once solely the domain of Ethernet – specifically, within the rack. Can it really compete with and win against Ethernet?
Traditional systems currently being deployed in volume have several interconnect technologies that need to be supported. As Figure 1 shows, Fibre Channel and Ethernet are two examples of these interconnects (obviously, there could be more -- for example, InfiniBand).
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