Data Center Bridging (DCB) refers to a set of Ethernet network features that are intended primarily for use in data centers. These enhancements, available on the Terminator Series (T4 and T5) adapters, create priorities and hence allow the allocation of bandwidth on the links. This is done to eliminate queue overflow, having the network being over-run, and hence create a lossless Ethernet. Primary purpose for DCB is to implement Fibre Channel over Ethernet (FCoE), a technology very sensitive to the loss of frames.
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