Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Distributed firewall wikipedia , lookup
Zero-configuration networking wikipedia , lookup
Piggybacking (Internet access) wikipedia , lookup
Cracking of wireless networks wikipedia , lookup
Computer network wikipedia , lookup
Passive optical network wikipedia , lookup
Recursive InterNetwork Architecture (RINA) wikipedia , lookup
List of wireless community networks by region wikipedia , lookup
Embracing Changes, Becoming Open Huawei Transport SDN Solution Transport SDN History Transport SDN Applications Huawei Transport SDN Progress SDN Background and Concepts • In 2008, the Openflow team in the Stanford University first proposed the centralized control Openflow solution. • • • The closeness, complexity, and poor scalability of the underlying network greatly affects network innovation. • The academia wants to simplify network devices and enhance network controllability and manageability through the centralized Controller to remove technological monopoly of mainstream datacom device makers. SDN: Software Defined Networking • The control and data planes are separated. • Control is centralized. • Network is programmable and automatically controller. Openflow: Control API interface between the centralized Controller and devices, which controls the flow forwarding tables of devices. Management plane Transport SDN History NMI ASON control plane Application layer BoD APP OVPN APP Other APP Northbound open API Internet-style RESTful interface PCEP PCE NMI Transport service plane In 1998: American Sycamore first proposed the intelligent optical network and introduced IP functions to the optical network. In 2000: The ITU-T officially determined to carry out the ASON standardization work. In 2001: The IETF proposed GMPLS and expanded routing and signaling protocols in IP networks to the transport network. In 2005: The IETF proposed PCE to solve the problem of complex and constrained route calculation in the GMPLS/MPLS multilayer and multi-region network. In 2013: ONF Optical Transport Working Group(OTWG) is builded. Transport SDN entered the stage. SDN Standards: IETF VS ONF IETF: evolutionary SDN architecture ONF: revolutionary SDN architecture PCEP, SNMP, NETCONF, CLI, OpenFlow PCE interfaces are mainly used for smooth network evolution and protect the investment. Openflow interfaces refine device interfaces and even device chips and are mainly used on switches. IETF PCE Standard Progress 1. Stateless PCE (centralized route calculation) TED 2. Stateful PCE PCE TED PCEP PCEP+ NEs • • Global optimal path is calculated based on TED. The PCE standard is already mature, and Huawei provided most articles for PCE for transport. Started in 2005 3. Active stateful PCE PCE LSPD TED PCEP++ Real-time LSP synchronization • LSP synchronization allows the LSPD to own total-network LSP information. Google, Cisco, and Huawei are active in PCE for transport. Huawei provided more than half of articles for PCE for transport. Started in 2011 LSP active control NEs NEs • PCE LSPD • • LSP active control (creation, deletion, and modification) Google, Cisco, Juniper, and Huawei have some working groups and individual articles. Started in 2012 Stage 1: Stateless PCE has been mature. Stage 2: Stateful PCE is basically mature. Huawei T-SDN Controller already supports PCE. Stage 3: Active stateful PCE is in progress. After it is complete, PCEP will serve as the southbound interface of the SDN Controller and has complete functions. ONF Optical Transport Working Group (OTWG) and Related Standard Status OTWG milestone Founded on: 2013.03.18 Chair: Lyndon Ong (Ciena) Vice Chairs: Ping Pan (Infinera), Vishnu Shukla (Verizon), Maarten Vissers (Huawei) (3) Extensions to ONF protocols (e.g. OFOF-wire, OF OF--config config)) v1 (2) Arch. and Frwk (4) Requirements (e.g. carrier grade) Vendors: Ciena, Infinera, Huawei, ALU, Fujitsu, E///, NEC, Tellabs, Juniper, metaswitch, vello (startup), bigswitch (startup), ZTE, ADVA, Cyan SP: Verizon, Telefonica, DT, NTT, KT, Level3, Colt v1 (5) Transport SDN whitepaper/Solution Brief v1 (1)) Use(1 Use-case v1 Jun.15, 2013 Sep.15, 2013 Dec.15, 2013 Apr.15, 2014 Content: • Direct control of transport network elements • Indirect control on abstracted view of transport network • Packet-optical integration (POI) In current stage, use case has been completed; the architecture document is still under discussion; protocol expansion is being carried out. The overall progress is behind the schedule and requires at least 2 to 3 years to make PCEP mature. Transport SDN History Transport SDN Applications Huawei Transport SDN Progress Huawei T-SDN Open Network Architecture Global network management Vendor APP Third-party APP Multi-region collaborator Northbound interface Virtual network control Field Controller Optical power commissioning Online commissioning PCE/ Openflow+ Network abstraction … Physical network control Southbound interface Southbound interface NE management interface (e.g., TL1, Qx) EMS/ NMS Automatic Operation, Implementing Online Service Provisioning Old Process Automation Collaboration Current Difficulties Manually find bandwidth bottlenecks • Artificial import & export the data, Low efficiency • Offline planning prone to distortion Export Data from NMS to Planner New Process Off-line planning the newly increased service Auto discovery and automatic warning Export data from Planner to NMS On-line planning the newly increased service Commissioning & Ready for Service Commissioning & Ready for Service Avg. 2 Wks Openness • Lengthy process result in slow TTM Benefits from T-SDN Avg. 2 Hrs • Data is automated linked, high efficiency • Online planning ensure high quality • Shorten the process, fast service delivering Automation Bandwidth Automatic Provide A 10GE Application layer B Client 1 virtual view & control of transport network Tenant Carrier Network center Customer service center 2 1 4 3 6 7 Client 1 Controller Virtual control 5 Traditional mode: Bandwidth leasing is manually processed VIP customer 1 T-SDN Controller Physical architecture B 7 Client 2 VIP customer 2 Control layer 2 6 4 Openness Client 2 virtual view & control of transport network 1 24 5 6 Controller 1 A Collaboration 3 7 8 Transport network A SDN: provides virtualized bandwidth operation, man-machine interaction, and machine-machine interaction The SDN centralized management system virtualizes network bandwidth, provides a variety of differentiated bandwidth services (VTS), improves VIP user experience, increases customer stickiness, and brings value-added service revenues. SDN-based IP + Optical Synergy to Improve E2E Network Resource Utilization Orche strator Router Controller Orche strator Transport Controller Automation Collaboration Openness Enable Multi-Layer coordination and Cross-Layer optimization and efficiency: ---Optimized routing and re-routing Decisions, bring high utilization R R R R IP R R P-OTN R ----Keep all transit traffic in P-OTN Layer, greatly saving CaPex P-OTN P-OTN -----Fast failure handling P-OTN P-OTN P-OTN Optical Automation Collaboration Network On-Demand Service Traffic Transport Controller Time Openflow/PCEP Data center Controller Openflow The transport Controller works with the data center SDN Controller to dynamically provide bandwidth and improve channel usage according to service requirements. Openness Open platform to simplify OSS and achieve innovative applications OSS APP1 VTS Automation Collaboration Openness APP2 BoD Standard open API SDN Controller (Abstraction) OSS集成方案 OSS OSS集成方案 Integration Transport network A OSS Integration is very time-consuming (few months even one year) and blocks the new technology introduction. Transport network B (for better and faster technology and business innovation) Transport network C •T-SDN Simplify the OSS integration •Allows operators quick to benefit from latest equipment and technology innovation. T-SDN Values Automation Synergy Auto-deployment, Auto-operation Auto-maintenance, Multi-layer multidomain synergy, improving utilization Open Open & standard interface, rich APPs, facilitate business innovation Virtualization Flexible Equipment & network virtualized, Easy to manage Unified control of Flex-OTN, Flex-ROADM Transport SDN History Transport SDN Applications Huawei Transport SDN Progress Huawei T-SDN Progress • Automated Service Deployment of Optical layer • T-SDN control of flex-grid Super channel • Automated Service Deployment of O & E layer PDP Paper SDN&OpenFlow World Congress 2013.3 2013.11 SDN&OpenFlow World Congress ChinaTelecom Test 2013.12 2013.10 • Launch 1st T-SDN prototype Telefonica Test VDF POC Test OFC & ONS 2013 2012.10 2014.1 • Demonstrate Virtual transport Service(VTS) • IP + Optical Solution : protection, centralized rerouting, etc. Keep going T-SDN Help China Telecom to Improve Operation and Maintenance Efficiency Result of China Telecom T-SDN Test Passive Controller Active Controller DCN Hours Hours N*1000 Hours 100% Current Network 85% Mins Service TTM Mins Mins N*100 T-SDN Resource Fiber Service Network Evaluation maintenance Survivability scale Centralized Control of multi domain network with global perspective to achieve resource optimization Online network analysis, automated commissioning and delivery, improve the efficiency and survivability Huawei's Contributions in SDN Standards Stateful PCE(TSDN) is accepted as WG document Edit >50% of the drafts in PCE WG Publish RFC regarding OTN Control Actively contributor in SDN related area: NVo3/PCE/ALTO/I2RS/NSC/STATUS/CRC Chair of SG11 SDN WP Q4 associate rapporteur of SG11 G.CSO initiation(Huawei proposed) Editor of SG15 SDN living list Co-chair of infrastructure WG Co-editor of Reliability WG Co-editor of MANO WG Program manager for all projects Contribute 4 use cases of total 9 Chair of Migration WG Vice-chair of Optical Transport WG Chair of Wireless & Mobile WG Vice-chair of NBI WG Editor of key standard drafts Joint proposer of MPLS VPN project Huawei is very active in SDN& NFV field, holding a series of importing positions in standard organization and has proposed 16 academic thematic reports, including 4 Invited Talk from 2012 to 2013 Contributor of Carrier WG Req. on Transport Networks in SDN Architectures Huawei T-SDN-based OTN Products Portfolio Huawei OTN Network SDN Solution Unified SDN Controller UPS OSN 6800 OSN 1800 I/II/V • • Compact MS-OTN 3/7/15 slots Optical Shelf • • 1-9D ROADM CDC/Flex-Grid OSN 8800 T16 • • 1.6T switch 16 slots OSN 9800 U16 OSN 8800 T32/T64 • • 3.2/6.4T switch 32/64 slots • • 2.8/5.6T switch 14 slots End-to-end OTN product series from the backbone network to MAN OSN 9800 U32/U64 • • 12.8T/25.6T switch 32/64 slots