converged enhanced Ethernet (CEE)

The CEE protocol (Converged Enhanced Ethernet) was initiated by IBM, Intel and Broadcom to ensure error-free and reliable data transport between servers, storage systems and switches in a data center, as is essential in storage networks. Fibre Channel( FC) data is transmitted via this error-free transport path. This Lossless Ethernet is used in Fibre Channel over Ethernet( FCoE).

In storage technology, the reliability of the transmission and the correct delivery of data packets is essential. That is why CEE also has overload control and management to ensure that no unicast data packets are lost. In the event of congestion, the corresponding congestion mechanism intervenes and slows down the transfer of low- priority data packets.

Converged Enhanced Ethernet was submitted to INCITS, which also standardized Fibre Channel (FC), in 2007. Whether standardization will occur also depends on what IEEE 802 and the Internet Engineering Task Force( IETF) decide. IEEE 802.1 has several working groups developing various protocols that operate on Converged Enhanced Ethernet (CEE). The work is focused on Data Center Bridging( DCB) and Priority Flow Control( PFC), Enhanced Transmission Selection ( ETS), Data Center Bridging Exchange ( DCBX), and Quantized Congestion Notification ( QCN), developed by the 802.1Qbb working group. The latter is responsible for detecting congestion in the CEE network. In addition, Transparent Interconnection of Lots of Links( TRILL) is a routing protocol for multipathing in the CEE cloud.