I/O Consolidation in the Data Center

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  • Edition: 1st
  • Format: Paperback
  • Copyright: 2009-09-08
  • Publisher: Cisco Press

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Supplemental Materials

What is included with this book?


Using Fibre Channel over Ethernet (FCoE) and related technologies, data centers can consolidate data traffic onto a single network switch, simplifying their environments, promoting virtualization, and substantially reducing power and cooling costs. This emerging technology is drawing immense excitement, but few enterprise IT decision-makers and implementers truly understand it.I/O Consolidation in the Data Centeris the only complete, up-to-date guide to FCoE. FCoE innovators Silvano Gai and Claudio DeSanti (chair of the T11 FCoE standards working group) systematically explain the technology: its benefits, tradeoffs, and what it will take to implement it successfully in production environments. Unlike most other discussions of FCoE, this book fully reflects the final, recently-approved industry standard. The authors also present five detailed case studies illustrating typical FCoE adoption scenarios, as well as an extensive Q and A section addressing the issues enterprise IT professionals raise most often. This is a fully updated version of Silvano Gai's privately-published book on FCoE, written for leading FCoE pioneer Nuova Systems before the company was acquired by Cisco. Nearly 12,000 copies of that book have already been distributed, demonstrating the immense interest in FCoE technology, and the scarcity of reliable information that has existed about it.

Author Biography

Silvano Gai is a Cisco Fellow, with more than 27 years of experience in computer engineering and computer networks. He was an architect of the Cisco Catalyst family of network switches, of the Cisco MDS family of storage networking switches, and of the Nexus family of data center switches. Silvano teaches a course on I/O Consolidation, Data Center Ethernet, and Fibre Channel over Ethernet at Standard University (see http://scpd.stanford.edu/certificates/fcoe). Claudio DeSanti is a Distinguished Engineer in the Advanced Architectures Research organization in Cisco. He represents Cisco in several National and International Standards Bodies, such as INCITS Technical Committee T11, IEEE 802.1, IETF, and in industry associations. He is vice chairman of the INCITS T11 Technical Committee, chairperson of various working groups, including FC-BB-5, where FCoE has been developed, and technical editor of different standards.

Table of Contents

I/O Consolidationp. 1
Introductionp. 1
What Is I/O Consolidationp. 2
Merging the Requirementsp. 3
Why I/O Consolidation Has Not Yet Been Successfulp. 4
Fundamental Technologiesp. 5
PCI-Expressp. 5
10 Gigabit Ethernetp. 5
Additional Requirementsp. 8
Buffering Requirementsp. 8
Layer 2 Onlyp. 9
Switch Architecturep. 9
Low Latencyp. 10
Native Support for Storage Trafficp. 11
RDMA Supportp. 11
Enabling Technologiesp. 15
Introductionp. 15
Lossless Ethernetp. 15
PAUSEp. 15
Credits Versus PAUSEp. 17
PAUSE Propagationp. 18
Is Lossless Better?p. 19
Why PAUSE Is Not Widely Deployedp. 20
Priority-based Flow Control (PFC)p. 20
Additionals Componentsp. 22
DCBX: Data Center Bridging eXchangep. 22
Bandwidth Managementp. 23
Congestion Managementp. 25
Delayed Dropp. 26
Going Beyond Spanning Treep. 28
Active-Active Connectivityp. 32
Etherchannelp. 32
Virtual Switching System (VSS)p. 32
virtual Port Channel (vPC)p. 34
Ethernet Host Virtualizerp. 36
Layer 2 Multipath (L2MP)p. 38
Basic Mechanisms in L2MPp. 40
Cisco DBridgesp. 47
IETF RBridges and the TRILL Projectp. 51
VEB: Virtual Ethernet Bridgingp. 52
Server Virtualizationp. 53
SR-IOVp. 54
The IEEE Standard Effortp. 54
VEB in the Adapterp. 55
VEB in the Switchp. 56
VNTagp. 57
Fabric Extendersp. 59
VN-Linkp. 60
Questions and Answersp. 63
Does FCoE Uses Credits?p. 63
High Availability of PAUSE and Creditsp. 63
Queue Sizep. 63
Long-Haulp. 63
Configurationp. 64
Bandwidth Prioritizationp. 64
Storage Bandwidthp. 64
Cisco DCB/FCoE Supportp. 65
10GE NICsp. 65
IP Routingp. 65
Lossless Ethernet Versus Infinibandp. 66
Nomenclaturep. 66
Fibre Channel over Ethernetp. 67
Introductionp. 67
Fibre Channelp. 69
Fibre Channel Architectural Modelsp. 69
FCoE Mappingp. 73
FCoE Architectural Modelsp. 73
FCoE Benefitsp. 79
FCoE Data Planep. 80
FCoE Topologiesp. 82
FCoE Addressingp. 85
FCoE Forwardingp. 87
FPMAs and SPMAsp. 90
FIP: FCoE Initialization Protocolp. 92
FIP Messagesp. 93
FIP VLAN Discoveryp. 97
FIP Discoveryp. 98
FIP Virtual Link Instantiationp. 103
FIP Virtual Link Maintenancep. 108
Converged Network Adaptersp. 10
FCoE Open Softwarep. 112
Network Toolsp. 113
FCoE and Virtualizationp. 114
Fibre Channel Block I/Op. 115
iSCSI Block I/Op. 116
Moving a VMp. 117
FCoE and Block I/Op. 117
FCoE FAQp. 118
Is FCoE Routable?p. 118
iSCSI Versus FCoE?p. 120
Does FCoE Require Gateways?p. 123
Case Studiesp. 125
Introductionp. 125
I/O Consolidations with Discrete Serversp. 125
Top-of-Rack Consolidated I/Op. 129
Example with Blade Serversp. 131
Updating the Distribution Layerp. 133
Unified Computing Systemp. 136
Bibliographyp. 139
PCI Expressp. 139
IEEE 802.3p. 139
IEEE 802.1p. 139
Ethernet Improvementsp. 139
Fibre Channelp. 139
FCoEp. 140
TRILLp. 140
Virtualizationp. 140
Glossaryp. 141
Figuresp. 145
Tablesp. 149
Indexp. 151
Table of Contents provided by Ingram. All Rights Reserved.

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