《3.0-SDN化云数据中心架构设计.pdf》由会员分享，可在线阅读，更多相关《3.0-SDN化云数据中心架构设计.pdf（49页珍藏版）》请在金锄头文库上搜索。
1、 2014 Cisco and/or its affiliates. All rights reserved. SDN化云数据中心架构设计 王伯剑 客户解决方案架构师 思科全球运营商事业部解决方案架构组 2015年4月 Cisco Confidential 2 2014 Cisco and/or its affiliates. All rights reserved. 议程 数据中心网络架构演进趋势和需求 SDN在DCI/广域网的应用设计 SDN在MSDC数据中心交换矩阵网络应用设计 SDN在虚拟叠加网络应用设计 Cisco Confidential 3 2014 Cisco and/or i
2、ts affiliates. All rights reserved. 数据中心网络的演进 趋势和需求 Cisco Confidential 4 思科全球云指数的预测20132018 5大数据中心/云业务发展的趋势 全球数据中心流量持续增长，且流量流向发生变化 1 1 持续提高的数据中心虚拟化程度 2 2 日益增多的云服务（IaaS, PaaS and SaaS) 3 3 新的技术发展驱动云计算的应用和部署：IoE、大数据、集群计算和分布式存储 4 4 网络质量/带宽利用率越来越多的影响云服务的SLA、成本以及体验 5 5 Cisco Confidential 5 全球数据中心流量预测: 传统
3、数据中心 vs. 云数据中心 2018年云数据中心的流量比例将达到75% Zettabytes Zettabytes per Yearper Year Source: Cisco Global Cloud Index, 20132018 0.0 2.0 4.0 6.0 8.0 10.0 201320142015201620172018 Traditional Data Center (8% CAGR) Cloud Data Center (32% CAGR) 23% CAGR 23% CAGR 20132018 76%76% 24%24% 54%54% 46%46% Cisco Confide
4、ntial 6 全球数据中心流向的变化, 2013 - 2018 数据中心内流量仍是主体，但数据中心间的DCI流量将同比显著升高 Within Data Center 76.7% Data Center-to-Data Center 6.6% Data Center- to-User 16.7% Within Data Center 74.5% Data Center-to- Data Center 8.5% Data Center- to-User 17.0% 2013 2018 Cisco Confidential 7 RDC RDC = Backbone Peering Point =
5、RDC, Co-Location, NG Interconnect & T1/T2/T3 DC = Regional/Metro Wired Wireless Mobile Metro Metro Metro Metro 互联网架构向着以内容/DC为中心演进 Internet Circa 1990-2010 Tier One IP Core Internet Circa 2010-2015 IP+CDN Core Internet Circa 2015-Future RDC/LI+Metro Core Cisco Confidential 8 以数据中心为主的网络架构设计特点 Metro WA
6、N (Internet Peering) DCI (MPLS TE) DCI ServiceDCI Service Traffic EngineeringTraffic Engineering 端到端的计算资源移动性和IT池化能力 DC-West DC-East Branches Metro Virtual Overlay Network DC overlay DC Fabric DCI/WAN Cisco Confidential 9 Facebook 广域网设计 MPLS Backbone - DCI Internet Backbone - Peering Cisco Confidenti
7、al 10 Datacenters of varying sizes Large number of servers/VMs Multi-tenancy High bisectional bandwidth within DC 扩展性 Network Virtualization, instant Insertion of network services Service Chaining, Services networking Robust network availability and redundancy Seamless integration with WAN, DCI 服务能力
8、 DC Underlay network agnostic Add network capacity and load incrementally Workload and VM mobility Variety of server, access connectivity options, multi-homing 灵活性 Network orchestration and operations at scale Simplified network, service provisioning for tenants Ease of data collection and troublesh
9、ooting Support for OAM and proactive monitoring 自动化运维能力 开放性 Yang Models REST, RESTConf BGP MPLS-over-GRE, VXLAN, MPLS-over-UDP, L2TPv3 OVF, VMDK Linux/Ubuntu Openstack KVM Ganglia Puppet & Cobbler 云数据中心的设计要素 Cisco Confidential 11 云数据中心对于SDN的需求 Notes: Infonetics Data center SDN Strategies Survey 12-0
10、5-14 Cisco Confidential 12 2014 Cisco and/or its affiliates. All rights reserved. SDN在DCI广域网 的应用 Cisco Confidential 13 微软在3年前就提出了软件驱动的广域网- SWAN Link utilization Network wide Link utilization SDN based centralized TE Cisco Confidential 14 中国网络规模最大OTT客户在2013年提出在广域网引入 SDN 10+ PoP 50+ Datacenter 300K+ s
11、erver 1000G+ IDC BW 100PB+ Storage Challenges : Inefficient network overall bandwidth utilization Inability to find appropriate forwarding path for upper layer application Unsmooth bandwidth requirement Cisco Confidential 15 Collector Programming Bandwidth Orchestrator Visualizatio n/ Analytics Elas
12、tic CloudsElastic Clouds Apps Apps Elastic CloudsElastic Clouds Q Q- -WAEWAE APIs Apps Customers DC/Cloud Providers MPLSMPLS WAN Orchestrators BGP-LS PCEP 业内标准化的广域网SDN设计架构多层PCE ODL/CDL Controller Cisco Confidential 16 思科广域网控制器（引擎） Collection Drivers WAN Applications Programming Drivers WAE ALU Junip
13、er Cisco Huawei Cisco Applications Other 3rd Party Applications PRIME Base Client App RESTful APIs PCEP I2RS MATE Design MATE Live Predictive Model Visualization and Analytics Demand/Path Placement Engine Programming Modules Collection Modules OnePK Configlets OF SNMP CLI NetFlow NMS/ EMS BGP-LS Cis
14、co Confidential 17 广域网控制引擎的部署模式基于开源的ODL控制器 SDN Mode WAE Application Engine Configlet NCS ODL/CDL EMS/NMS Controller Physical Network Open Daylight Controller Cisco Confidential 18 Traffic-Steering App 应用案例：基于策略的流量疏导 CR 1 CR 3 CR 2 CR 4 Hi Prio Tunnel Lo Prio is Best Effort Red: OF and 1PK Green: PCE
15、P Services Services PE PE Cisco Confidential 19 应用案例：带宽预定 19 Q-WAE Program NB API WAN R1 R2 R3 1 5 Data Center #1 Data Center #2 1.Network conditions reported to collector consistently 2.NS-OS pulls latest Plan File every 20 from existing MATE Collector 3. Customer App requests DC #1 DC #2 bandwidth at Future Date 4. Demand admission response: 5. Customer App confirms booking 6. Two hours prior to activation NS-OS places config in BTM 7.BTM programs the LSP on devices 8.LSP setup for traffic
