Emerging Technologies in Optical Transport Networks

Transcription

1 Emerging Technologies in Optical Transport Networks Jim Theodoras October 2012

2 Agile Core Network Real intelligence lies at higher layers in the Routers Intelligent MUX Hybrid EDFA/RAMAN Amp Gridless ROADM Router Coherent Receiver Agile Core Network Router 2

3 Control Plane Integration IP/MPLS Network Agile Optical Core IP/MPLS Network Router Border Router Border Router Router Router Router Router ENNI ENNI Router MPLS GMPLS MPLS Routing OSPF OSPF-TE GMPLS-OSPF Path Computation Shortest Path Recursive Lambda Remote Computation Signaling RSVP RSVP-TE GMPLS-RSVP 3

4 Lab demonstration ADVA s YouTube channel, advaoptical 4

5 LSP establishment Node 2 MD-ROADM Node 1 Node 3 Directionless ROADM Directionless ROADM Color Interface MD-ROADM Color Interface Hansel Node 4 Gretel LSP1 LSP2 LSP2 LSP1 5

6 ADVA OPTICAL NETWORKING PIONEERS OPENFLOW IN THE OPTICAL DOMAIN 6

7 Software Defined Networking App App App App Virtual Network Slices Network Operating System Networking Applications Open API Networking Virtualization Open API Unifying Abstraction Programmable networks enable new networking paradigms through flexibility, agility, and virtualization! Data Plane Switching & Forwarding 7

8 What is OpenFlow? Circuit Switching Extensions Circuit Flows In Port In Lambda VCG Starting Time-Slot Signal 8 Type Out Port Out Lambda VCG Starting Time-Slot Signal 8 Type ADVA extends OpenFlow into the Optical Wavelength Switched Domain 8

9 Optical OpenFlow Solutions Big Fat Switch (BFS) CP assisted OpenFlow (CPO) Optical OpenFlow Switching (OOS) OpenFlow Agent Optical Network Optical Network acts as one Virtual Switch Plain packet-based OpenFlow Controller Optical layer functionality is abstracted by single OpenFlow agent Optical Network visible in OpenFlow Controller OpenFlow Controller with Circuit Switching extensions and Control Plane Assistance OpenFlow Agent on each NE Optical Network fully controlled by OpenFlow OpenFlow Controller and OpenFlow Protocol requires Optical extensions OpenFlow agent on each NE models optical constraints 9

10 WSS WSS 1:N WSS ADVA Optical OpenFlow Prototype OpenFlow Prototype for FSP 3000 ROADM platform Lightpath Setup / Teardown with Optical Power Balancing & Optical Impairment Awareness Topology & Node Discovery Optical Node Model Dynamic Switching Constraints OFELIA Optical OpenFlow Networking Testbed at University of Essex OpenFlow WSS 1:N WSS CFLOW_MOD Controller CFLOW_MOD 1:N WSS CFLOW_MOD WSS λ Block 1:N WSS OpenFlow Agent OpenFlow Agent OpenFlow Agent WSS λ 2 λ 3 TX C λ 1 Any λ 1:N WSS 10

11 Application Controlled Optical PCE Demo Aalborg, May 10-11, 2012 PCE based Media App over Extended Controller Path Computati on (2) Submit Request including User Context (3) Reserve Resources (1) Publish Service and Infrastructure Information End-User Request Visualization Facility High Capacity Network Streaming Server 11

12 Stuart Elby, Verizon, Open Networking Summit, Apr Use Cases Joint IT & Network Orchestration for Cloud Services Network Virtualization Long-Distance Datacenter Interconnects Dial-up Bandwidth Services Service Elasticity & Mobility Custom Networking Apps 12

13 OFELIA Overview & OpenFlow for Optical Networks 13

14 What is OpenFlow? Providing the tools for software defined networks OFELIA Vision The aim of the OFELIA project is to create a unique experimental facility that allows researchers to not only experiment 'on' a test network but to control the network itself precisely and dynamically. To achieve this, the OFELIA facility is based on OpenFlow, a currently emerging networking technology that allows to virtualize and control the network environment through secure and standardized interfaces. NW Control application OpenFlow controller Advances beyond state of the art. Priorities w.r.t. scientific challenges. OF extensions needed for multi-layer, multi-domain Any domain or layer borders require flow processing; Interface between controller and processing plug-ins needs to be developed & tested Extend filter format description to generic labels (CarrierEther,IPv6, opt. circuits, so-called OF v2.0 (?)) non-ip experiments such as content-based addressing CONVERGENCE FP7 project Multi-domain OpenFlow requires controller/controller communication Switch packet/ circuits Processing OFELIA Project Overview 27./ 28. April

15 partner L2 L1/optics L3 Wireless emulation Control SW processing US connections MM source OFELIA - Aim and Partners. Complimentary strength & representation of important research communities. Federation of five islands 5 OpenFlow-enabed islands at academic institutions: Berlin (TUB) partial replacement of existing campus network with OF-switches Ghent (IBBT) central hub, large-scale emulation wall Zürich (ETH) connection to OneLab and GpENI Barcelona (i2cat) experience with facility projects (IaaS, FEDERICA) Essex (UEssex) national hub for UK optical community; L2 (Extreme) switches, FPGA testbed NEC provides homogeneous L2 hardware platform (OFenabled Ethernet switches) ADVA as major vendor of optical access and data center equipment Different external vendors (HP, Extreme, Juniper) Explore extensions of OpenFlow towards wireless and optical transmission Partners with complementary technological strengths and user groups from five countries with strong research communities in networking. ibbt X X X X TUB X X I2cat X X X UEssex X X X X X ETH X X Additional partners and European manufacturers will be involved through Open Calls EC - Review - Project Introduction 27./ 28. April

16 L1/L0 Openflow Integration Integrated network model Switch flow table and openflow protocol agent/engine are integrated in ADVA equipment NOX Controller Extreme CG Ethernet Domain Extreme NEC NetFPGA Domain NEC Campus Domain ADVA NetFPGA ADVA Optical Networking. All rights reserved. Confidential.

17 UEssex Island Optical Testbed N3 Ext. L2/L1/L0 OpenFlow Controller (NOX) N1 N2 Eth. Sw. 2 Eth. Sw. 3 Col. IF / DWDM XFP Eth. Sw. 1 Col. IF / DWDM XFP Node #1 Col. IF / DWDM XFP Deg-4 ROADM (8-WSS) Node #2 c/d-less 8ch a/d Deg-2 ROADM (8-WSS) Node #3 c/d-less 8ch a/d Deg-2 eroadm 40ch fixed a/d (PLC) ADVA Optical Networking. All rights reserved. Confidential.

18 Sample ROADM Node architecture Crossconnection: C12, 19 N2 Eth. Sw. Col. IF / DWDM XFP Amplifier Splitter / Coupler ROADM 4 Degree Multiple shelves Add/Drop Group #1 #C1 #C8 #C9 #C16 Client Ports P4 P2 Add/Drop Group #2 1xn Wavelength Selective Switch (WSS) (with Variable Optical Amplifier (VOA)) (color-selective Mux/Demux) nxm Wavelength Selective Switch (WSS) (with Variable Optical Amplifier (VOA)) 40/80ch Multiplexer Transponders Amp. Line Port #N1 Line Port #N3 ILA N1 N3 Line Port #N2 Line Port #N4 N2 N P ADVA Optical Networking. All rights reserved. Confidential.

19 The Telefónica solution 19

20 Scope of the trial Demonstrate how to get automated network automation in IP/MPLS network over DWDM Rationale: Transport and IP/MPLS networks operate indipendently and uncoordinately Network resources are often underutilised Traditional service provisioning takes significatively long times IP Offloading Manager (designed by Telefonica I+D) provides automatization and coordination for both transport and IP/MPLS network domains. 20

21 The IP Offloading Manager Prototype developed by Telefonica I+D Basic tasks: Network configurations supervision Automatic configuration of the network element Multilayer Restoration Further additional features under study Controller: central entity of the IP offloading manager. receiving external information and commands and carry out the required actions. Administration interface: This module shows a human friendly representation of the network and it allows manual command operation. Monitoring: This module receives the network information and it sends it to the controller SNMP (IP router bandwidht information) GUI interface CLI (IP Router) UNI (Optical equipment) Dispatcher: it runs commands to configure the network devices, based on the controller instructions 21

22 Equipment used for the test Juniper MX series router 10G channel (grey interfaces) ADVA FSP 3000 release MD ROADM 10G links provided by WCC-PCTN-10G cards 40channel filters Remote nodes (Rostock and Schwerin in the live network) equipped with FSP 3000 shelf - only used for traffic loopback 22

23 Case Scenario Topology Testlab Hamburg Live network provided by Telefonica (see next slide) Data Plane Control Plane ADVA GMPLS Domain 23

24 Case 1 IP Circuit provisioning R_ONE Resources R_TWO Resources R_THREE Reserved Reserved RSVP PATH MESSAGE TE-LINK TE-LINK RSVP RESV MESSAGE TE-LINK TE-LINK ADVA ONE ROSTOCK ADVA THREE Resources Reserved ADVA TWO Resources Reserved Please activate presentation mode! 24 SCHWERIN

25 Circuit Provisioning/De-provisioning Test of the automatic configuration of the NEs when the operator requests a new IP circuit IP Circuit provisioning time: 49s IP Circuit de-provisioning time: 4s 25

26 Case 2 Automatic link creation IP Offload manager monitors the IP traffic volume Test the IPOM to reroute IP traffic when its volume is above a configurable threshold Rerouting is done requesting the establishment of a new link Rollback threshold to return to normal operation New circuit provisioning - Time interval to estabilish a new link Configured Threshold Circuit deprovisioning Resources are released back to normal op. Rollback Threshold 26

27 Case 3 Multilayer restoration Same mechanism can be used for network (IP Routers) failures Provides CAPEX and OPEX Savings Extend MTTR up to 20 times 27

28 Conclusions Field trial provides proof of interoperability between ADVA/Juniper equipment and an 3rd party umbrella management interface Considerable savings in OPEX Extremely reduced time for IP over WDM circuit provisioning time Automatic configuration of new circuits in case of high traffic loads Considerable savings in CAPEX Automatic recovery of IP circuits 28

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