思科数据中心大讲堂-nexus第一篇a training for se

1、CiscoNexus 5000/2000/1000v product introduction 2009 Cisco Systems, Inc. All rights reserved.数据中心日趋虚拟化的环境带来.数据流向发生改变VMW ESXVM #8VM #7VM #5VM #5VM #5VM #6VM #7VM #8Nexus 1000VVMW ESXVM #8VM #7VM #5VM #5VM #5VM #6VM #7VM #8Nexus 1000V虚拟机环境改变了网络的流量负载通过增加单台物理服务器的应用密度，服务器自身和网络都得到了更好的利用需要重新衡量过载比的计算网络的容量不仅

2、在数量级上提升了（更多的存储和应用数据的迁移），也变得更加的高利用率（每台物理服务器产生了更多的数据和存储的流量）10GE LOMs, 多核CPUs 以及 服务器的虚拟化对网络10GE 的连接和带宽要求变得很高，对应用的性能起到了至关重要的作用。End of the Row (Centralized Server to Network cabling)数据中心架构对基础设施的要求也在发展Top of the Rack (De-centralized)数据中心的环境提出了新的基础设施的要求和技术的改变技术的改变将影响布线的设计LoM 技术默认的网络带宽升级到了10GE5年内将会升级到40GE和1

3、00GE 需要提供一个非常高效的电源供应和灵活的接入架构不仅仅是在EoR和ToR之间进行选择2008Nexus: An Unmatched Rate of InnovationCisco Nexus 7000Raised the bar for availability and performanceCisco Nexus 5000Unmatched versatility with Ethernet, DCE, FCoE & FC supportCisco Nexus 1000VRevolutionized virtual machine networkingJanAprSepPlatfor

4、mTechnologyNX-OSUnified OS for the data centerData Center EthernetLossless 10Gb transport for next-gen DCFibre Channel over EthernetUnified Fabric for LAN and FCVN-LinkVirtual Machine Aware Network , Storage and Unified Fabric1KCisco Nexus 1000V2008x86Cisco Nexus 2000Uniform architecture for GE, 10G

5、E, UIO and VM2009 2009 Cisco Systems, Inc. All rights reserved.Broad Customer Traction 2009 Cisco Systems, Inc. All rights reserved.Cisco Nexus Portfolio Deployed in Mission Critical DCs WorldwideOver 1000+ customers (and growing) have selected Cisco Nexus 5k/2k to run their data centers20% of Fortu

6、ne 100APAC, Emerging, Europe, Japan & USEnterprise, Mid-Market, Service Provider, Federal & Public SectorThe Nexus Family HasBeen Warmly Received “The Cisco Nexus 5000 brings a completely new technology to network consolidationwith a price that drubs the competition, a small 2U form factor, great sc

7、alability, and unrivaled speed and latency.”InfoWorld“Ciscos biggest switch, called the Nexus 7000, sits above them all, unifying a computer centers crazy quilt of engineering standards into a layer of control”Forbes Nexus 1000V Nexus 7000 Nexus Family Nexus 5000 2009 Cisco Systems, Inc. All rights

8、reserved.Nexus5K/2KNexus 5000/2000产品的定位 首先，N5K/N2K是一款虚拟的模块化以太网交换机，定位在数据中心接入层 支持纯GE、10GE全线速的以太网交换机，支持高密度和高性能的接入层网络迁移和数据中心改造带来数据中心L1、L2的灵活性 其次，N5K是一款支持网络融合FCoE的交换机 FCoE已于2009年6月3日正式成为ANTS T11的工业标准 IBM、HP的服务器相继宣布了对FCoE的支持 NetApp的存储已经支持FCoE的端口、EMC也将于年底支持第三， N5K是虚拟化ready的交换机，可以向虚拟化数据中心发展 N5K将直接支持与服务器虚拟机融

9、合的VN-Link的技术Nexus 5000/2000产品对客户的价值整合，优化并简化数据中心基础网络架构，降低TCO，保护现有服务器、网络、存储和基础设施的投资通过在网络层对虚拟机的优化服务，增加了业务的可视性和灵活性数据中心级高可用性和高性能的操作系统和数据交换能力增强了业务的弹性，提高计算资源的利用率不需要改变现有的运营模式和最佳实践经验，新的交换机平台的不是非常简单易行与众不同之处（可屏蔽其他厂家的技术特性）高性能10 Gigabit 以太网交换机支持数据中心以太网DCE特性支持工业标准FCoE对虚拟机业务进行优化Cisco Nexus 5000简介Nexus 5000 产品概述业界第

10、一款整合I/O 的数据中心虚拟网络交换机Nexus 5000交换机系列56-Port L2 Switch40 Ports 10GE/FCoE/DCE, fixed2 Expansion Modules28-Port L2 Switch20 Ports 10GE/FCoE/DCE, fixed1 Expansion ModuleFC + Ethernet 4 Ports 10GbE/FCoE/DCE 4 Ports 1/2/4G FCFibre Channel 8 Ports 1/2/4G FC扩展模块Ethernet 6 Ports 10GE/FCoE/DCE OSCisco Fabric M

11、anager and Cisco Data Center Network ManagerCisco NX-OS管理合作伙伴SW FCoE/DCE + 2x10GE2x10GE/DCE/FCoE2x10GENexus 5010Nexus 5020今天：N5K+N2K是虚拟模块化以太网交换机虚拟扩展模块- 多合一Nexus 2000 扩展器 (FEX) 相当于一个远程模块通过Nexus 5000作为整体的集中管理和配置，然后将其发送到虚拟机箱的远程模块上Nexus 5000虚拟化机箱+Nexus 5000Nexus 2000 Fabric Extender=今天：N5K+N2K是虚拟模块化以太网交

12、换机虚拟扩展模块- 多合一Nexus 2000 扩展器 (FEX) 相当于一个远程模块通过Nexus 5000作为整体的集中管理和配置，然后将其发送到虚拟机箱的远程模块上Nexus 5000虚拟化机箱+Nexus 5000Nexus 2000 Fabric Extender=相当于一台非背板连接的大模块化交换机，而且模块可以任意移动！布线的对比N5K/N2K优化 Layer 1和 Layer 2 的设计Combination of EoR and ToR cablingNexus 5000/2000 Mixed ToR & EoR. . .更加灵活的布线选择将物理布线和L2拓扑解耦合优化布线和

13、L2 (Spanning Tree) 的设计同时支持EoR, MoR 和ToR混合的1GE、10GE组网利用N2K的扩展性结合vPC 可以构建大型的layer 2 domains (减少STP 逻辑端口的数量、节点数 )N5K+N2K可至少支持576个GE端口，将来还会更多，端口数量扩展性极高N5K/N2K高可扩展的layer 2 拓扑和端口数L2L3L3L2BackbonevPCvPCNX-OS 4.1(3)N1 ReleaseNew Software virtual Port Channels (vPC)virtual Port Channels (vPC)vPC on the Nexus

14、 5000/2000 offers the following benefits Multi-chassis EtherChannels to redundantly connect devices without dependency on STP Leverage EtherChannel hashing to distribute load even on same VLAN Up to 16 ports per local Port Channel or 32 ports across a vPC Leverage IEEE 802.3ad LACP to dynamically ad

15、d/remove members Allows FEXs to dual-home to 2 Nexus 5000s or dual-home servers to 2 Nexus 2000s Up to 480 host port channels supported Compatible with vPC on Nexus 7000 and VSS on Catalyst 6500vPC with FEXNexus 2000 Straight-through vPCNexus 2000 active/activePeer-linkManagement Network2-GigE ports

16、host port channelManagement Networkprimarymgmt0mgmt0mgmt0mgmt0Peer-linksecondaryprimarysecondaryvPC2 portsFEX120FEX100HIF HIF “fabric links” vPC 1vPC 2FEX120FEX100HIF HIF “fabric links” Active/ standby 5k015k025k015k02NX-OS 4.1(3)N1 ReleaseNew Hardware 1G DOM OpticsSFP-1G-T/S/L1G DOM Optics1G DOM Op

17、tics offers the following benefits Digital Optical Monitoring (DOM) on fiber interfaces Supports extended temperature ranges Can be used on Nexus 5010 or Nexus 5020, with interface capabilities configured on a per-port basis Supports connectivity to servers or networking equipmentSupported on first

18、8 ports on 5010Support on first 16 ports on 5020!SFP-1G-T 1000 Base-T, CopperSFP-1G-S Short Reach, Multi-mode FiberSFP-1G-L Long Reach, Single-mode Fiber通过FCoE实现IO和网络整合LANSAN BSAN ANexus 5000IP局域网今天的数据中心网络LAN光纤存储网下一步：思科统一交换架构数据中心IP网络和光纤存储网络的融合增强型以太网和 FCoE以太网FCIP局域网光纤存储网统一交换网络SAN BSAN A减少网卡减少布线简化网络简化

19、管理数据网络、高性能计算、存储网络的整合传统的数据中心LANSAN BSAN AGatewayData Center SANHigh PerformanceComputingHPCData Center LANAccess LayerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerSer

20、verServerServerServerServerServerServerServerServerServerServerServerServerServerServerFCFCEthernetEthernetServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerOpticalCablesMDS 9500Catalyst6500SFS7000Cat4900MDS9200耗费大量功率线路结构复杂，难于管理、扩展资源没有整合，无法实现复用数据网络、高性能计算、存储网络的

21、整合Unified Fabric统一交换平台Data Center EthernetDCE网络绿色数据中心易于管理维护升级最大程度的资源整合，为虚拟化、自动化打下基础LANSAN BHPC、LAN、SAN合一10GE DCE / FCoEAccess LayerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerS

22、erverServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerServerEthernetCopper10GE40GE100GEDCE/FCoE. . . . .Nexus 5000Nexus 7000DCB and FCoE standard statusFeature / StandardStandards StatusPriority Flow Control (PFC)IEEE 802.1Qbb (part of IEEE DCB)PAR Approved,

23、Editor Claudio DeSanti (Cisco)Draft 1.0 PublishedExpected WG Ballot 11/2009Bandwidth ManagementIEEE 802.1Qaz (part of IEEE DCB)PAR Approved, Editor Craig Carlson (QLogic)Draft 0.2 PublishedExpected WG Ballot 11/2009Congestion ManagementIEEE 802.1QauPAR Approved, Editor Norman Finn (Cisco)Advanced De

24、velopment Draft 1.2 PublishedExpected Approval 04/2009Data Center Bridge Exchange Protocol DCBXThis is part of Bandwidth Management (IEEE 802.1Qaz)Fibre Channel over Ethernet (FCoE)T11 FC-BB-5 v2.0Standardized In T11.3 FC-BB-5 Working GroupChair: Claudio DeSanti (Cisco)Editor: Dave Peterson (Brocade

25、)Started in April 2007Stable Frame Format in August 2007Address Agreement in February 2008Letter Ballot passed on November 14th, 2008StandardizedJune 2009!L2 Multipath for Unicast & MulticastTRILL is an IETF Working Group Standard Expected to be complete in 2010Unified Fabric Adoption is Acceleratin

26、g!FCoE standard complete!T11 expected to send the standard to INCITS for publication on June 4thServer platform vendors support FCoECisco UCS and Dell are shipping FCoE switches and adapters todayIBM and HP have announced support All major ecosystem players support FCoESecond generation Converged Ne

27、twork Adapters (CNAs) announced with broad platform supportHow does it look like from a Server?Today Server I/O NetworkingServer I/O Networking with FCoENICs connect servers to LAN HBAs connect servers to SAN Requires multiple I/O adapters and cablesConsumes more power, cooling and footprintFCoE dep

28、loyed with 10 GigECNAs replace NICs and HBAsFCoE switch attaches to LAN Servers attach via ISLs from the FCoE switch to SAN (Storage direct connect certification in progress)Ethernet LANFC HBAFC HBANIC-1GigENIC-1GigENIC-1GigENIC-1GigEFCSANFCoECNA-10GigECNA-10GigENexus 5000SANLANNexus 5000 Unified Fa

29、bric 带来的好处Reduce overall Data Center power consumption and extend the lifecycle of current data center.Wire hosts once to connect to any network - SAN, LAN, HPC. Faster rollout of new apps and services. Drive storage consolidation and improve utilization because every host will be able to mount any

30、storage target Increasing SAN attach rate.Accelerate VM deployments and provides per VM high performance switching for scaling. VMW ESXVM #4VM #3ServerVM #2VM #1VN-LinkNexus 5000VIS Nexus Switch with VN-LinkHardware BasedAllows scalable hardware-based implementations through hardware switchesStandar

31、ds-based initiative: Cisco & VMware proposal in IEEE 802 to specify “Network Interface Virtualization”Combines VM and physical network operations into one managed node下一步：虚拟化 Nexus 5000 operated as VIS (Virtual Interface Switch)vnicvethVN-LinkHardware VNtag Initiator Software VNtag Initiator (e.g. N

32、exus 1000V)-Receives VN-Tagged Frames from initiator-Maps VNTag to virtual ethernet interface-Configuration, policy, statistics managed centrally from Nexus 5000服务器虚拟化的问题VMotionvSwitchvSwitchvSwitchVMotion 可以在物理端口上迁移虚拟机 端口策略必须能跟随虚拟机一起迁移无法针对本地的交换流量进行查看和使用策略需要网络和虚拟化管理的协同工作VLAN101Virtual Center可扩展的高速交换

33、解决方案基于标准协议，提供硬件实现的虚拟机交换把虚拟机和物理网络统一为一个管理节点VMW ESXVM #4VM #3服务器VM #2VM #1InitiatorNexus 5000支持VMWare ESX的Cisco软件交换机兼容所有交换平台提供了VirtualCenter用于服务器管理和网络管理VMW ESXVM#1VM #4VM #3服务器VM #2NICNICLANNexus 1000VNexus 1000V实现基于策略的VM连通性虚拟化网络域两个互补的方案解决不断变化的用户需求Nexus 5000 with VN-Link(基于硬件的解决方案)Cisco Nexus 1000V(基于软

34、件的解决方案)发布Cisco创新技术VN-Link实现网络和安全属性的移动性实现无中断的运行Cisco Nexus 1000V业界首个第三方虚拟 分布式交换机Nexus 1000V为VMWare ESX环境提供了增强的虚拟机交换能力提供了 VN-Link 特性:基于策略的虚拟机连通性管理网络和安全属性的可移动性无中断运行确保在VMotion过程中虚拟机的可视性和连通性提高服务器虚拟化带来的客户收益VMW ESX服务器 1VMware vSwitch Nexus 1000VVMW ESXVMware vSwitch Nexus 1000V服务器 2Nexus 1000VVM #4VM #3VM #2VM #1VM #8VM #7VM #5VM #5VM #2VM #3VM #4VM #5VM #6VM #7VM #8VM #1VM #1Cisco Nexus 1000V 构架Virtual Supervisor Module (VSM)虚拟或物理