Introduction to Software-Defined Networking

Transcription

1 Marc Cohn, Ciena Introduction to Software-Defined Networking Chair, Market Education Committee Open Networking Foundation 1

2 Marc Cohn 20+ years experience in marketing and product management Telecommunications Data networking Experience Ciena, Sr. Dir Market Development IP Infusion, Sr. Dir Product Marketing Amdocs, Sr. Dir Functional Design Lucent Technologies Dir of Product Mgmt. Alidian, Dir of Product Mgmt. Education MSEE (Univ. of So CA) BSCompE (Univ. of MO) BSEE (Univ. of MO) Standards Chair, Open Networking Foundation Market Education Committee; Council of Chairs AVnu (Audio/Video Networking) ANSI X3T9.5 (FDDI) ISO/OSI SC6 (Layer 4 Transport) 20 Publications Recent : Timing and Synchronization for Quasi-Real-Time Systems using IEEE 1588v2 Over Ethernet 2011 International IEEE Symposium on Precision Clock Synchronization for Measurement Control and Communication (ISPCS)

3 Agenda Why a new architecture? Software Defined Networking Overview Who is the Open Network Foundation (ONF)? State of OpenFlow and the ONF community 3

4 Business Challenges Market Trends Mobile data is rapidly growing Significant infrastructure investments are required to keep up Emergence of the cloud is altering the competition Critical Business Issues Need more flexibility to support evolving user demands Must improve time to market (Cloud) Continuing need to drive down costs Network Challenges Evolve from a pipe to a service/content delivery platform Cost effectively scale to support video Accelerate service velocity in an increasingly dynamic environment

5 Network Architecture Limitations IOS Closed Open Operating Platform System Cisco Routers Fixed Highly Programmable feature set Proprietary Hardware hardware Abstracted tightly From integrated with Software the software Software Defined Networking

6 Why Traditional Networking isn t the Right Solution Not Cost-Effective CAPEX OPEX Not Agile Enough for On-Demand Time-to-market Rapid service provisioning Not Designed for Virtualization East-west traffic support Bottleneck for server virtualization 6

7 SDN is an Architecture... Split Control Plane Abstraction Programmability Decouple Control plane from the Forwarding plane Centralizes intelligence, simplifying the data plane Shield applications from the network details; HW from SW Achieves portability Allows the forwarding behavior to be tailored to specific environments Enables automation Value Proposition Service agility Customization through innovation Differentiation Overall cost reduction

8 But, SDN is NOT... A Technology Enables technologies to be applied more effectively A Market A broader initiative that cuts across multiple markets A Solution But SDN facilitates customized solutions OpenFlow SDN is an Architecture; OpenFlow is a Protocol

9 Software Defined Network Architecture Software-Defined Framework enables Automation and Network Intelligence Management Layer Application Layer Controller Layer API Infrastructure Layer Device Business Applications Network Services API API Network Operation System Device Software-Defined Foundation for comprehensive Manageability and High Availability Device Device Device Software-Defined Fabric virtualizes Network services Software-Defined Flexibility achieves unprecedented programmability Software-Defined Forwarding achieves scalability And security

10 Real-World Applications for SDN Enterprise Cloud Carrier VM Migration Distributed Campus Networks Ultra-low Latency Hyperscale Data Centers Disaster Recovery Multi-tenancy On-Demand Network Services Traffic Steering Content Distribution 10

11 SDN vs. OpenFlow SDN is an Architecture OpenFlow is a Protocol OpenFlow Controller Network Architecture enabling programmability and network simplification Switch Switch Switch Control Secure Plane Interface Flow Table Data Plane Forwarding Open Interface protocol between the Control & Data Planes Spans multiple OSI communications layers Enables forwarding to be directly programmed Standardized by the ONF

12 OpenFlow: Instruction Set for SDN Programmable API that allows external software ( controller ) to control the data path of a switch OpenFlow Controller Programs the network, bypassing conventional L2/L3 protocols Prepopulate or send instructions dynamically SDN Controller (Server Software) OpenFlow Ethernet (or Hypervisor) Switch Control Path OpenFlow Data Path (Hardware) 12

13 How Does OpenFlow Work? SDN Controller (Server Software) OpenFlow-Enabled Switch Flow Table MAC src MAC dst IP Src IP Dst TCP dport Action Count * 10:20 * * * * port * :. * * * * port * * * 8 * 25 * drop 892 * * * 192.* * * local 120 * * * * * * controlle r 11 Flow Table Generic primitive sits on top of a (virtual) switch TCAM; works with common switch ASICs Example actions: 1. Switching/ routing (port) 2. Firewalling (drop) 3. Using switch s non- OpenFlow logic (local) 4. Sending to controller for processing (controller) Network functions split between per-packet rules on the switch &high-level decisions at the server

14 Open Networking Foundation Who is the ONF Industry organization dedicated to the development, standardization, and promotion of Software Defined Networking. Founded in 2011 ~80 members- Who s who in networking! Why ONF is important Emerging as the predominant SDN standards body OpenFlow (1 st standard) Driven by End-Users Increasingly Global

15 ONF Organization Leadership Board of Directors Council of Chairs Exec Director (Dan Pitt) Technical Advisory Group Architecture & Design Extensibility WG Config & Mgmt. WG Testing & Interop. WG Hybrid WG Market Education WG ONF Staff Working Groups

16 ONF Membership 80+ and growing (as of Oct. 2012) 6WIND A10 Networks ADVA Optical Networking Alcatel-Lucent Argela Aricent Group Big Switch Networks Broadcom Brocade Centec Networks Ciena Cisco Citrix CohesiveFT Colt CompTIA Cyan Dell/Force10 Deutsche Telekom Elbrys Ericsson ETRI Extreme Networks EZchip F5 Facebook France Telecom Orange Freescale Fujitsu Gigamon Goldman Sachs Google Hitachi HP Huawei IBM Infinera Infoblox Intel IP Infusion Ixia Juniper Networks KDDI Korea Telecom Level 3 Communications LineRate Systems LSI Luxoft Marvell Mellanox Mellanox Metaswitch Networks Microsoft Midokura NCL Communications K.K. NEC Netgear Netronome NetScout Systems Nokia Siemens Networks NoviFlow NTT Communications Oracle PICA8 Plexxi Inc. Radware Riverbed Technology Samsung SK Telecom Spirent Telecom Italia Tencent Texas Instruments Vello Systems Verisign Verizon VMware/Nicira Yahoo Xpliant ZTE Corporation 16

17 Practical Steps: Transition to SDN Expedite: urge your vendors to supply SDN Experiment: trial and build your expertise Engage: join ONF to drive standards 17

18 Summary SDN: the future of networking, here now OpenFlow: the cornerstone on which we build SDN ONF: driving an open, programmable, standardsbased OpenFlow/SDN solution Please join us in accelerating SDN: 18

19 Cảm ơn bạn! Marc Cohn