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• Data Center Bridging
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IEEE 802.3 - Communication Standards
1 802.3bd 2010 Priority-based Flow Control. An amendment by the IEEE
802.1 Data Center Bridging Task Group (802.1Qbb) to develop an
amendment to IEEE Std 802.3 to add a MAC Control Frame to support IEEE
802.1Qbb Priority-based Flow Control.
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Ethernet flow control
1 The follow-on 'priority-based flow control', as defined in the 'IEEE
802.1Qbb' standard, provides a link-level flow control mechanism that
can be controlled independently for each Class of Service (CoS), as
defined by IEEE P802.1p. The goal of this mechanism is to ensure zero loss
under congestion in data center bridging (DCB) networks.
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Ethernet flow control - Priority flow control
1 The effort was part of the data center bridging task group, which developed
Fibre Channel over Ethernet.
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Data center bridging
1 'Data center bridging' (DCB) refers to a set of enhancements to Ethernet local area networks for use in data
center environments
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Data center bridging
1 To meet these goals new standards are being (or have been) developed that either extend
the existing set of Ethernet protocols or emulate the connectivity offered by Ethernet
protocols. They are being (or have been) developed respectively by two separate
standards bodies, the Institute of Electrical and Electronics Engineers (IEEE) Data Center
Bridging Task Group of the IEEE 802.1 Working Group and the Internet Engineering
Task Force (IETF).
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Data center bridging - Terminology
1 Different terms have been used to market products based on data center bridging
standards:
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Data center bridging - Terminology
1 * 'Data Center Ethernet' (DCE) was a term trademarked by Brocade
Communications Systems in 2007 but abandoned by request in 2008. DCE
referred to Ethernet enhancements for the Data Center Bridging standards, and
also including a Layer 2 Multipathing implementation based on the IETF's TRILL (computing)|Transparent Interconnection
of Lots of Links (TRILL) standard.
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Data center bridging - Terminology
1 ** The [ http://www.ieee802.org/1/files/public/
docs2008/az-wadekar-dcbx-capability-exchange-discovery-
protocol-1108-v1.01.pdf Data Center Bridging eXchange (DCBX) Version 0 Specification] was also submitted for
use in the [ http://www.ieee802.org/1/pages/802.
1az.html IEEE 802.1Qaz] project.https://store.theartofservice.com/the-data-center-bridging-toolkit.html
Data center bridging - IEEE Task Group
1 * Data Center Bridging Capabilities Exchange Protocol (DCBX): a discovery and capability
exchange protocol that is used for conveying capabilities and configuration of the above
features between neighbors to ensure consistent configuration across the network.
This protocol leverages functionality provided by [
http://www.ieee802.org/1/pages/802.1ab.html IEEE 802.1AB] (LLDP). It is actually included
in the 802.1az standard.
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Brocade Communications - Products
1 Other hardware solutions from Brocade support common protocols including iSCSI, FCIP, GigE, FICON, Fibre Channel over Ethernet|FCoE, Data center bridging|DCB/CEE, and
Layer 4-7 networking protocols.
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Brocade Communications - Fibre Channel
1 In Late 2010 Brocade introduced Virtual Cluster Switching (VCS) on
the VDX ultra-low-latency data center switch product line. These are Data center bridging|DCB/CEE- and TRILL (Computer Networking)|TRILL-based switches, eliminating the need
for Spanning Tree Protocol, and supporting multi-hop Fibre Channel
over Ethernet (FCoE) and self-trunking.
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Ethernet Alliance - Organization
1 * Ethernet in the Data Center focus includes protocols such as Data
Center Bridging (DCB), Fibre Channel over Ethernet (FCoE), iSCSI, Remote
direct memory access over Converged Ethernet (RoCE) and
iWARP.
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Link Layer Discovery Protocol - Applications
1 The Link Layer Discovery Protocol may be used as a component in
network management and monitoring applications. One such example is its use in data center
bridging requirements.
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FCoE - Functionality
1 Since classical Ethernet had no priority-based Ethernet flow control|flow control, unlike Fibre Channel,
FCoE required enhancements to the Ethernet standard to support a
priority-based flow control mechanism (to reduce frame loss
from congestion). The IEEE standards body added priorities in
the data center bridging Task Group.https://store.theartofservice.com/the-data-center-bridging-toolkit.html
Dell PowerConnect - 8100 series
1 It is a small (1U) switch with a high port-density and can be used as distribution or
(collapsed)core switch for campus networks and for use in the datacenter it offers features such as loss-less ethernet for iSCSI and FCoE,
data center bridging (DCB) and iSCSI Auto-configureDell
[http://i.dell.com/sites/doccontent/shared-content/data-sheets/en/Documents/
Dell_PowerConnect_8100_Series_Spec_Sheet.pdf PowerConnect 8100 spec sheet], July 2012
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Dell M1000e - I/O Aggregator
1 The I/O aggregator supports Fibre Channel over Ethernet|FCoE and DCB (Data center bridging) featuresDell
website: [http://www.dell.com/us/business/p/poweredge-m-io-aggregator/pd#TechS
pec PowerEdge M I/O Aggregator], August, 2012
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LIO Target - FCoE
1 The Fibre Channel over Ethernet (FCoE) fabric module allows the
transport of Fibre Channel protocol (FCP) traffic across data center
bridging|lossless Ethernet networks. The specification, supported by a
large number of network and storage vendors, is part of the Technical
Committee T11 FC-BB-5 standard.
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Dell Networking - Dell Networking S series
1 The S-5000 is targeted for datacenter networking as either a 10G access-switch or a datacenter distribution
switches. It can also be used as (routing) core switch in smaller
datacenters. It fully supports Data Center Bridging (DCB) and can also be used as FCoE or Fibre Channel
switch by using a FC interface module.
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