Virtual Network System:Splitting Control and Data Planeto Optimize IP and Transport Services at Minimum OPEXElisa Bellagam...
Trends & driving forces  Internet bandwidth growth                                  Mobile Traffic GrowthPersonal, mobile ...
Rapid change carries a cost                                                                              Capacity =Dealing...
Rapid change carries a cost                                                                               Capacity =Dealin...
Rapid change carries a cost                                                                               Capacity =Dealin...
Rapid change carries a cost                                                                                            Cap...
Rapid change carries a cost                                                                                           Capa...
Control Plane optionsfor access and aggregation networks    Today’s TDM NetworksConverged Network Today’s IP Networks     ...
Traditional networking:functional representation            traditional                  traditional             ROUTER   ...
Virtual Network System:functional representation                                                                          ...
Virtual Network System:the network as a platform                ACCESS        AGGREGATION     EDGE         CORE           ...
CP consolidation in Aggregation› Homogenous DP: operational simplicity     › The centralized control plane element› CP con...
TCO analysis               1ST                2ND           3RD Access        Aggregation        Aggregation   Aggregation...
Connectivity Scenarios details:p2p L2 services    ACCESS                  METRO             EDGE   CORE   METRO           ...
Connectivity Scenarios details     mp2mp L3 services         ACCESS            METRO             EDGE   CORE            ME...
Connectivity Scenarios details:mp2mp L3 services    ACCESS                  METRO               EDGE   CORE   METRO       ...
Running demo in Ericsson booth                                                               Show            VNS domain   ...
Testing the controller scalability:         study assumptions             CONNECTIVITY         1   MODELS                 ...
Testing the controller scalability:RESULTS    CONNECTIVITY1   MODELS                                            Which are ...
Rapid change carries a cost                                                                              Capacity =Dealing...
Leveraging on multilayer technology          application         aware routing                         PKT                ...
Rapid change carries a cost                                                                              Capacity =Dealing...
Premium OTT content delivery andInline Service Chaining                        EDGE                                      G...
ConclusionsMAINSTREAM: IP implemented in every node                                   Growing complexityNEW PARADIGM: Virt...
REMINDER:VNS Demo & Whitepaper at Ericsson Booth
Virtual Network System: Splitting Control and Data Plane to Optimize IP and Transport Services at Minimum OPEX
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Virtual Network System: Splitting Control and Data Plane to Optimize IP and Transport Services at Minimum OPEX

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Presented by Elisa Belllagamba,
Portfolio Strategy Manager, Business Unit Networks, Product Area IP & Broadband, at the MPLS and Ethernet World Congress 2012

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Virtual Network System: Splitting Control and Data Plane to Optimize IP and Transport Services at Minimum OPEX

  1. 1. Virtual Network System:Splitting Control and Data Planeto Optimize IP and Transport Services at Minimum OPEXElisa Bellagambaelisa.bellagamba@ericsson.com
  2. 2. Trends & driving forces Internet bandwidth growth Mobile Traffic GrowthPersonal, mobile cloud services 50B Connections
  3. 3. Rapid change carries a cost Capacity =Dealing with Scale Lowering Costs Creating Revenue ƒn (demand) + ƒn (performance) MOBILE CORE Revenue = MOBILE ƒn (competition) + ƒn (content ownership) BACKHAUL & METRO TRANSPORT & ROUTING Network costs = ƒn (traffic growth) MUST BREAK THIS! FIXED MULTI-SERVICE EDGEDEVICES ACCESS AGGREGATION IP EDGE CORE
  4. 4. Rapid change carries a cost Capacity =Dealing with Scale Lowering Costs Creating Revenue ƒn (demand) + ƒn (performance) How to extend IP services up to the access? MOBILE CORE Revenue = MOBILE ƒn (competition) + ƒn (content ownership) BACKHAUL & METRO TRANSPORT & ROUTING Network costs = ƒn (traffic growth) MUST BREAK THIS! FIXED MULTI-SERVICE EDGEDEVICES ACCESS AGGREGATION IP EDGE CORE
  5. 5. Rapid change carries a cost Capacity =Dealing with Scale Lowering Costs Creating Revenue ƒn (demand) + ƒn (performance) How to extend IP services up to the access? MOBILE CORE Revenue = MOBILE Upgrade ƒn (competition) + boxes to ƒn (content ownership) full IP? BACKHAUL & METRO TRANSPORT & ROUTING Network costs = ƒn (traffic growth) MUST BREAK THIS! FIXED MULTI-SERVICE EDGEDEVICES ACCESS AGGREGATION IP EDGE CORE
  6. 6. Rapid change carries a cost Capacity =Dealing with Scale Lowering Costs Creating Revenue ƒn (demand) + ƒn (performance) How to extend IP services up to the access? whole Train the MOBILE CORE Revenue = personnel to ƒn (competition) + MOBILE TDM TDM build IP ƒn (content ownership) competence? TDM TDM BACKHAUL & METRO TRANSPORT & ROUTING Network costs = TDM TDM TDM TDM ƒn (traffic growth) MUST BREAK THIS! FIXED TDM TDM TDM MULTI-SERVICE EDGE TDM TDM TDM TDMDEVICES ACCESS AGGREGATION IP EDGE CORE
  7. 7. Rapid change carries a cost Capacity =Dealing with Scale Lowering Costs Creating Revenue ƒn (demand) + ƒn (performance) How to extend IP services up to the access? whole Train the MOBILE CORE Revenue = personnel to IP IP ƒn (competition) + MOBILE build IP ƒn (content ownership) IP IP competence? BACKHAUL & METRO TRANSPORT & ROUTING IP IP IP IP Network costs = ƒn (traffic growth) MUST BREAK THIS! FIXED IP IP IP MULTI-SERVICE EDGE IP IP IP IPDEVICES ACCESS AGGREGATION IP EDGE CORE
  8. 8. Control Plane optionsfor access and aggregation networks Today’s TDM NetworksConverged Network Today’s IP Networks NMS NMS NMS Centralized control plane Static Dynamic Dynamic Centralized control Centralized Control Distributed control Simplified operational model IP operational model Data Plane Control Plane Interface to Common Control Plane Aggregation Core Aggregation
  9. 9. Traditional networking:functional representation traditional traditional ROUTER TRANSPORT NODE NMS NMS, PCE Mgmt, CLI, SNMP Svc cfg TED RIB FIB LIB LFIB Mgmt, CLI XC dB* Signaling/TE (RSVP, LDP, CSPF) IGP (for top. discovery, DCN) Routing (IGP, BGP) Forwarding, OAM handling Forwarding, OAM handling Control plane is baked into * For MPLS-TP, underlying forwarding can be infrastructure, that poses considered LFIB scale, and feature velocity problems
  10. 10. Virtual Network System:functional representation Distributed Virtual Network System location VNS-NE interface LFIB NMS IP proxy/PBR functionality shaping etc… shaping etc… policing, policing, IGP (for top. Disc, DCN), intra-regionMgmt, CLI, SNMP VNS-NE interface PCE Forwarding/OAM handling RIB LIB TED Svc cfgSignaling, TE (RSVP, LDP, CSPF, PCEP) Distributed location Routing* (IGP, eGP), inter-region VNS-NE interface LFIB TCN: Central shaping etc… IP proxy/PBR functionality shaping etc… location policing, policing, Traffic IGP (for top. Disc, DCN), Control intra-region Node Forwarding/OAM handling
  11. 11. Virtual Network System:the network as a platform ACCESS AGGREGATION EDGE CORE Virtual Network System CSR IP TCNRESIDENTIAL PE MTUENTERPRISE CPE Virtual Network System can logically represent as a single entity a full cluster/region of nodes
  12. 12. CP consolidation in Aggregation› Homogenous DP: operational simplicity › The centralized control plane element› CP consolidation: topology hiding, can act as a single IP/MPLS node manage scale participating in the IP core, on behalf of the NEs in the access/aggregation INDEPENDENT SCALING OF CONTROL PLANE AND DATA PLANE IP/MPLS Metro Control plane i/eGP Domain Data plane
  13. 13. TCO analysis 1ST 2ND 3RD Access Aggregation Aggregation Aggregation VNS domain ~70% OPEX SPO1410 SSR GE … GE TCN savings 10GE SPO1410 TCN Download the paper here
  14. 14. Connectivity Scenarios details:p2p L2 services ACCESS METRO EDGE CORE METRO ACCESS 1st Aggr. 2nd Aggr. VNS domain AN VNS AG1 AG2 PE ABR AG1 AN AG2 CE PE PE PE Eth AC LDP PW Fixed/Mobile Backhaul Business VPN Business VPN, backhaul (e.g. X2)
  15. 15. Connectivity Scenarios details mp2mp L3 services ACCESS METRO EDGE CORE METRO ACCESS 1st Aggr. 2nd Aggr. VNS domain AN VNS AG1 AG2 PE ABR AG1 AN AG2CE PE PE CE Business VPN Business VPN, backhaul (e.g. X2)
  16. 16. Connectivity Scenarios details:mp2mp L3 services ACCESS METRO EDGE CORE METRO ACCESS 1st Aggr. 2nd Aggr. VNS domain AN VNS AG1 AG2 PE ABR AG1 AN AG2 CE PE PE CE PE CE Eth AC LDP, iBGP
  17. 17. Running demo in Ericsson booth Show VNS domain L3VPN R3 10.50.3.1 GUI & 10.33.99.3 vrf1 CMD Linevideo TCNclient DPN 2 SPO-1410 Static L3 laptop 1 VPN10.50.3.2 OSPF, configuration BGP, LDP video DPN 3 ML-SP 210 10.50.1.1 server SPO-1410 Plug-in new DPN 1 vrf1 ML-SP 210 SE100 SE100 laptop 2 Auto- 10.50.1.2 Provisioned R1 R2 ML-SP 210 10.33.99.1 10.33.99.2 DPN 3 Adding a “customer site”, auto-configuration of VNS internal transport Configure & prove L3VPN by TCN command line printouts
  18. 18. Testing the controller scalability: study assumptions CONNECTIVITY 1 MODELS Several combination MSER GGSN PE IPTV Internet PGW server of mesh, ring and tree topologies with AGS1 up to 3 level of AGS1 AGS2 aggregation AGS2FIBER AGS1ACCESS AGS1 PE PE ABR ABRFIBERACCESS AGS2 FIBER AGS2 ACCESS AGS1 AGS1FIBERACCESS FIBER VNS domain ACCESS Quantitative 2 SERVICES 3 assumptions › MBH › Static › Dynamic – number of – Link down › IPTV Tunnels › affected tunnels – number of › timescale › p2p Equipments – IPTV channel change › timescale
  19. 19. Testing the controller scalability:RESULTS CONNECTIVITY1 MODELS Which are the requirement on the VNS controller in order to enable the controlled network to have same or2 SERVICES better performance than a traditional distributed network while providing additional functionality Quantitative3 assumptions and reduced switch complexity?› Static behavior – Requirements are in the order of magnitude or below the capabilities of existing controllers and switches› Dynamic behavior (restoration) – A centralized restoration scheme coupled to a data plane protection meet the transport requirements of 50ms while ensuring best path availability – Changing the connection structures has a significant impact on the scalability
  20. 20. Rapid change carries a cost Capacity =Dealing with Scale Lowering Costs Creating Revenue ƒn (demand) + ƒn (performance) MOBILE CORE Multilayer Revenue = optimization? MOBILE ƒn (competition) + ƒn (content ownership) BACKHAUL & METRO TRANSPORT & ROUTING Network costs = ƒn (traffic growth) MUST BREAK THIS! FIXED MULTI-SERVICE EDGEDEVICES ACCESS AGGREGATION IP EDGE CORE
  21. 21. Leveraging on multilayer technology application aware routing PKT PKT PKT PKT OTN OTN OTN OTN variable WDM bandwidth WDM WDM WDM packet links unified recovery There is an opportunity to improve the coordination between Packet and Optical layers with a fully dynamic coordination
  22. 22. Rapid change carries a cost Capacity =Dealing with Scale Lowering Costs Creating Revenue ƒn (demand) + ƒn (performance) MOBILE CORE Revenue = MOBILE ƒn (competition) + ƒn (content ownership) BACKHAUL & METRO TRANSPORT & ROUTING Network costs = ƒn (traffic growth) MUST BREAK THIS! FIXED MULTI-SERVICE EDGEDEVICES ACCESS AGGREGATION IP EDGE CORE
  23. 23. Premium OTT content delivery andInline Service Chaining EDGE GGSN PCRF MSER PGW CSR VNS PE Inline service ABR chaining, VNS traffic domain steering CPE OTT Player makes use of network capabilities to enhance its services for the users
  24. 24. ConclusionsMAINSTREAM: IP implemented in every node Growing complexityNEW PARADIGM: Virtual Network System Simplified management Supporting growth and service variety
  25. 25. REMINDER:VNS Demo & Whitepaper at Ericsson Booth

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