Embracing Changes, Becoming Open. Huawei Transport SDN Solution

Transcription

1 Embracing Changes, Becoming Open Huawei Transport SDN Solution

2 Transport SDN History Transport SDN Applications Huawei Transport SDN Progress

3 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.

4 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 NMI PCE 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.

5 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.

6 IETF PCE Standard Progress 1. Stateless PCE (centralized route calculation) TED PCEP PCE NEs Global optimal path is calculated based on TED. The PCE standard is already mature, and Huawei provided most articles for PCE for transport. 2. Stateful PCE TED PCEP+ LSPD Stage 1: Stateless PCE has been mature. NEs PCE 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. 3. Active stateful PCE 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. TED PCEP++ LSPD NEs PCE LSP active control LSP active control (creation, deletion, and modification) Google, Cisco, Juniper, and Huawei have some working groups and individual articles. Started in 2005 Started in 2011 Started in 2012

7 ONF Optical Transport Working Group (OTWG) and Related Standard Status OTWG milestone (2) Arch. and Frwk v1 (1) Use-case v1 Jun.15, 2013 (3) Extensions to ONF protocols (e.g. OF-wire, OF-config) v1 Sep.15, 2013 (4) Requirements (e.g. carrier grade) v1 (5) Transport SDN whitepaper/solution Brief Dec.15, 2013 Apr.15, 2014 Founded on: Chair: Lyndon Ong (Ciena) Vice Chairs: Ping Pan (Infinera), Vishnu Shukla (Verizon), Maarten Vissers (Huawei) 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 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.

9 Huawei T-SDN Open Network Architecture Global network management Multi-region collaborator Vendor APP Third-party APP Northbound interface Virtual network control Field Controller Optical power commissioning Online commissioning PCE/ Openflow+ Network abstraction EMS/ NMS Physical network control Southbound interface Southbound interface NE management interface (e.g., TL1, Qx)

10 Automatic Operation, Implementing Online Service Provisioning Old Process Manually find bandwidth bottlenecks Export Data from NMS to Planner New Process Current Difficulties Automation Collaboration Openness Artificial import & export the data, Low efficiency Offline planning prone to distortion Lengthy process result in slow TTM Off-line planning the newly increased service Export data from Planner to NMS Commissioning & Ready for Service Avg. 2 Wks Auto discovery and automatic warning On-line planning the newly increased service Commissioning & Ready for Service Avg. 2 Hrs Benefits from T-SDN Data is automated linked, high efficiency Online planning ensure high quality Shorten the process, fast service delivering

11 Bandwidth Automatic Provide Automation Collaboration Openness A 10GE B Tenant Carrier Network center A Customer service center B Application layer Client 1 virtual view & control of transport network Client 2 Controller VIP customer 2 Virtual control VIP customer 1 Control layer T-SDN Controller Physical architecture Transport network A Client 1 Controller 8 7 Client 2 virtual view & control of transport network Traditional mode: Bandwidth leasing is manually processed 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.

12 SDN-based IP + Optical Synergy to Improve E2E Network Resource Utilization Automation Collaboration Openness Router Controller Orche strator Orche strator Transport Controller Enable Multi-Layer coordination and Cross-Layer optimization and efficiency: R IP R R R R P-OTN P-OTN P-OTN P-OTN P-OTN R R P-OTN Optical ---Optimized routing and re-routing Decisions, bring high utilization ----Keep all transit traffic in P-OTN Layer, greatly saving CaPex -----Fast failure handling

13 Automation Collaboration Openness Network On-Demand Service Traffic Time Transport Controller 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.

14 Open platform to simplify OSS and achieve innovative applications OSS OSS OSS 集成方案 Integration OSS APP1 VTS SDN Controller (Abstraction) APP2 BoD Automation Collaboration Openness Standard open API (for better and faster technology and business innovation) Transport network A Transport network B Transport network C OSS Integration is very time-consuming (few months even one year) and blocks the new technology introduction. T-SDN Simplify the OSS integration Allows operators quick to benefit from latest equipment and technology innovation.

15 T-SDN Values Automation Auto-deployment, Auto-operation Auto-maintenance, Synergy Multi-layer multidomain synergy, improving utilization Open Open & standard interface, rich APPs, facilitate business innovation Virtualization Equipment & network virtualized, Easy to manage Flexible Unified control of Flex-OTN, Flex-ROADM

17 Huawei T-SDN Progress T-SDN control of flex-grid Super channel Automated Service Deployment of Optical layer Automated Service Deployment of O & E layer PDP Paper SDN&OpenFlow World Congress SDN&OpenFlow World Congress Telefonica Test OFC & ONS 2013 VDF POC Test ChinaTelecom Test Keep going Launch 1 st T-SDN prototype Demonstrate Virtual transport Service(VTS) IP + Optical Solution : protection, centralized rerouting, etc.

18 T-SDN Help China Telecom to Improve Operation and Maintenance Efficiency Active Controller DCN Passive Controller Result of China Telecom T-SDN Test Hours Hours N*1000 Hours 100% 85% Mins Mins Mins N*100 Current Network T-SDN Service TTM Resource Evaluation Fiber maintenance Service Survivability Network 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

19 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 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 SG11 SDN WP Q4 associate rapporteur of SG11 G.CSO initiation(huawei proposed) Editor of SG15 SDN living list 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

20 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 8800 T32/T64 3.2/6.4T switch 32/64 slots OSN 9800 U16 2.8/5.6T switch 14 slots OSN 9800 U32/U T/25.6T switch 32/64 slots End-to-end OTN product series from the backbone network to MAN

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