FCoE

(redirected from Enhanced Ethernet)

FCoE

(Fibre Channel Over Ethernet) A protocol for transmitting Fibre Channel frames over 10G Ethernet. FCoE replaces the bottom Fibre Channel (FC) layers F0 and F1 with Enhanced Ethernet layers, enabling the same network port on a server to carry Fibre Channel frames to an FC storage device and Ethernet frames to the local network.

Enhanced Ethernet
Rather than regular Ethernet adapters, FCoE requires Enhanced Ethernet adapters on all nodes that support FCoE, and these adapters are called "converged network adapters" (CNAs). Regular Ethernet can lose packets under heavy congestion, but Enhanced Ethernet prevents packet loss by providing flow control. The FC to Ethernet conversion also takes place in the FCoE engine within the CNA. See Fibre Channel.


Typical FCoE Topology
Both IP traffic for the LAN and FC traffic for the SAN (storage network) ride over the same FCoE-based Ethernet port. Although a CNA may have two 10G Ethernet ports, they exist for redundancy, not to separate IP from FC traffic. Both the server and switch perform the FC to Ethernet and Ethernet to FC conversion in their respective CNAs.







The FCoE Frame
Each Fibre Channel (FC) frame is encapsulated within an FCoE frame, which becomes the payload of the Ethernet frame.
References in periodicals archive ?
The release of Synopsys' enhanced Ethernet VIP and its SystemVerilog source code test suites that support the Consortium's 25G/50G Ethernet specification drives faster adoption of this enabling technology.
At the same time, Anritsu introduced a number of upgrades to the MT1000A, launched in July 2014, including support for high-speed Fibre Channel and enhanced Ethernet testing.
25 29, 2010, demonstrated the continued power of Ethernet and recent extensions to the standard, such as Converged Enhanced Ethernet (CEE), to support high performance storage.
The company said that these new offerings, based on standards for Converged Enhanced Ethernet (CEE), Fibre Channel over Ethernet (FcOE), RDMA over Converged Ethernet (RoCE) and iSCSI extensions for RDMA (iSER), will allow customers to build flexible service oriented networks for different application workloads and/or multi-tenant environments.
Juniper says the 4500 is Converged Enhanced Ethernet and Data Center Bridging "capable," and 44% more power efficient than Cisco's Nexus 5000.
Now, organizations are looking to leverage a new lossless and deterministic transportAConverged Enhanced Ethernet (CEE)Athat enables them to consolidate Fibre Channel SANs and networking transport layers into a single physical interconnect.
QLogic 8100 Series CNAs are optimized for both data and storage networking virtualization with superior 10Gb Enhanced Ethernet performance to handle massive quantities of virtual machines.
In addition, the companies plan to work together on open, standards-based solutions for virtualized data centers and deliver technology solutions using Converged Enhanced Ethernet (CEE), also known as Data Center Bridging (DCB) and iSCSI to improve network economics.
However, pushing for a new single standard like Converged Enhanced Ethernet (CEE) will not cause the other interfaces and their respective legacy equipment to disappear over night.
Emulex LightPulse CNAs leverage eight generations of advanced, field-proven Fibre Channel technology to provide host Local Area Network (LAN) and Fibre Channel Storage Area Network (SAN) connectivity over 10Gb/s Ethernet using FCoE and Enhanced Ethernet functionality, making them ideal for server I/O consolidation.
Nasdaq:QLGC), Aliso Viejo, a leading supplier of high performance network infrastructure solutions, has announced that its 8Gb/4Gb/2Gb Fibre Channel, 1GbE iSCSI, 40Gb/20Gb (QDR/DDR) InfiniBand(r) and 10Gb Enhanced Ethernet Converged Network Adapter products are qualified with the latest distribution of SUSE Linux Enterprise 11 from Novell, the Linux platform that drives mission-critical computing from the desktop to the data center, for physical and virtual environments.
For example, Rockwell Automation (Milwaukee, WI) introduced in April an enhanced Ethernet Networking Interface module for networking Allen-Bradley MicroLogix and CompactLogix controllers by Ethernet.

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