Network Transformation System Unified MPLS Mobile Transport ...
Network Transformation System Unified MPLS Mobile Transport ...
Network Transformation System Unified MPLS Mobile Transport ...
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Chart from Infonetics, Text from DTTDM transport of packets is no longereconomically viable, lacks statisticalmultiplexing which makes it veryexpensiveFull transformation to NGN needsto occur from core to customerLong term vision is critical, this will bethe network for the next decadeWhat is the most effectivetechnology choice that will:Minimize CapEx and OpEx?Provide carrier class servicedelivery?Maximize service agility?Carriers want the deterministic attributes of transportnetworks with the flexibility of the internet© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 7
Legacy backhaul• 2G/3G hierarchical backhaul architecture• <strong>Transport</strong> from RAN to Aggregation <strong>Network</strong>BSC/RNC middle-man sitting at localaggregation domain• Hub-spoke connectivity from BSC/RNC toBTS/NodeB2G/3G Hierarchical Backhaul ArchitectureBTS/NodeBBTS/NodeBMSC GGSNAbis/IubSGSNBSC/RNCNext-Gen Backhaul• LTE flattened all-IP backhaul architecture• <strong>Transport</strong> from RAN to Core <strong>Network</strong>• Multipoint connectivity (S1-u, S1c interface) fromRAN to Core EPC gateways• Mesh connectivity in RAN (X2 interface) betweeneNodeBs• MME/SGW pooling requires eNodeB connectivityto multiple MME/SGWLTE/EPC Flattened Backhaul ArchitectureeNodeBPGWSGWeNodeBS1-uS1-cS1-cMMEX2S1-uMMESGW/PGWRANAggregationCore© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 8
• Current application overlays do not have direct awareness of thenetwork infrastructure when dealing with service location andservice placementSPs are understandably sensitive about exposing topology informationCurrent application mechanisms: delay measurements, DNS, anycast, …• High bandwidth, high demand volatility applications expose thelimitations of this approachCan make inefficient use of network resources, i.e. incurring additional costMay not be able to deliver required SLAs• Karagiannis et al [1] show that traffic generated by popular peer-to-peerapplications often crosses the same network boundaries multiple times,contributing to congestion at network bottlenecks [2]“ ...up to 70-90% of existing local content was found to be downloaded fromexternal peers.”[1] Karagiannis, T., Rodriguez, P., and K. Papagiannaki, "Should ISPs fear Peer-Assisted Content Distribution?", ACMUSENIX IMC, Berkeley 2005.[2] Akella, A., Seshan, S., and A. Shaikh, "An Empirical Evaluation of Wide Area Internet Bottlenecks“, Proceedings ofACM SIGCOMM, October 2003© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 9
Benefits of <strong>Network</strong> Awareness• Aggarwal et al [3] show that whenthe overlay topology is networkaware, it is highly correlated withthe underlying network topology;the nodes within an AS form adense cluster, with only a fewconnections going to nodes inother ASOverlay-underlay Topology Correlation• Comcast's experience [4]:• “... reduced outgoing Internet traffic by anaverage of 34% at peering points.”• “... reduced incoming Internet traffic by anaverage of 80% at peering points.”<strong>Network</strong> Unaware<strong>Network</strong> Aware[3] Aggarwal, V., Feldmann, A., and C. Scheideler, "Can ISPs and P2P systems co-operate for improvedperformance?", ACM SIGCOMM Computer Communications Review (CCR), 37:3, pp. 29-40.[4] C. Griffiths, J. Livingood, L. Popkin, R. Woundy, Y. Yang, “Comcast's ISP Experiences in a Proactive<strong>Network</strong> Provider Participation for P2P (P4P) Technical Trial”, RFC 5632, September 2009© 2010 Cisco and/or its affiliates. All rights reserved.Cisco Confidential 10
• What transport services do you need to consider• ATM• TDM• IP VPN• L2VPN• All of above• Others© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 11
© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 12
• Efficient packet transport for packet traffic• Separation of transport from service operations with single touchpoint service enablement• Intelligent hierarchy to scale to new challenges• Simple zero configuration fast convergence• Virtualized to support many services on one infrastructure• Support for legacy transport on same infrastructure© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 13
Operational PointsAccess AGG AGG<strong>MPLS</strong>LER LSR LER<strong>MPLS</strong> <strong>MPLS</strong>AGG AGG Access<strong>MPLS</strong>• In general transport platforms, a service has to be configuredon every network element via Operational Points. Themanagement system has to know the topology.• Goal is to minimize the number of Operational points• With the introduction of <strong>MPLS</strong> within the aggregation, somestatic configuration is avoided.• Only with the integration of all <strong>MPLS</strong> islands, the minimumnumber of Operational Points is possible.© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 14
Reduction in BGP routes towards AccessAggregation NodeAggregation Node~45RANIGP <strong>MPLS</strong>/IPRoutesIGP Area/Process~254 ~ Aggregation IGP 2,500 RoutesDomain<strong>MPLS</strong>/IP~ 6,020IGP Area/ProcessIGP Routes! BGP RoutesAggregationNodeCoreCore~70Core~ IGP 67,000DomainRoutes<strong>MPLS</strong>/IP~ 67,000 IGP IGP Routes! BGP Area RoutesCoreCore~254 ~ Aggregation IGP 2,500 Routes Domain<strong>MPLS</strong>/IP~ 6,020 IGP BGP Routes! RoutesIGP Area/ProcessAggregationNode~45RAN IGP<strong>MPLS</strong>/IPRoutesIGP Area/ProcessAggregation NodeAggregation NodeiBGP Hierarchical LSPLDP LSP LDP LSP LDP LSPLDP LSP LDP LSP LDP LSP LDP LSP LDP LSPNode Access Domain Aggregation Domain <strong>Network</strong> WideCell Site Gateways 20 2,400 60,000Pre-Aggregation Nodes 2 240 6,000Aggregation Nodes NA 12 300Core ABRs NA 2 50<strong>Mobile</strong> transport Gateways NA NA 20© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 15
• The link between R P and R B fails.• R P reroutes all traffic originally for link R P -R B to R C . This is done by precomputingavailable paths that do not create loops• Gives benefits of TE-FRR, but no configuration or design requiredRoute X:NH: R B,LFA: R CR Ppacketaddr XR B<strong>Network</strong> Xpacket addr X packet addr XPrimary PathR CRepair Path© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 16
© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 17
© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 18
Beachhead CustomerEngagements“Trusted Advisor” StatusReal <strong>System</strong>s DeliveryTested & DocumentedEssence ofSuccessful<strong>System</strong>sThought LeadershipInnovation, POC &captivating roadmapsProduct DevelopmentDifferentiatingfunctions/features© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 19
• Lab Space = 2100m 2• Cabling = 8000km+• Rack count = 1100+• Power DC = 9000+ Amps• Power AC = 4000+ Amps© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 20
• What are your top two decision criteria for selecting transportnetwork solutionsTotal cost of ownership (capex plus opex)Operations simplicityAbility to scaleSecurityAbility to meet defined SLAs© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 21
• A <strong>Unified</strong> <strong>MPLS</strong> transport simplifies the end-to-end architecture, eliminating thecontrol and management plane translations inherent in legacy designsSeamless <strong>MPLS</strong> LSPs across Access, Aggregation & CoreService provisioning done only at the edges• Flexible placement of L3 and L2 transport virtualization functions required tosupport retail and wholesale backhaul for GSM, UMTS, LTEDifferent options optimized for different topologies• Delivers a new level of scale for <strong>MPLS</strong> transport with RFC-3107 hierarchicallabeled BGP LSPs• Simplified carrier class operations with end-to-end OAM, PerformanceMonitoring and LFA FRR fast convergence protection• Extensible to Wireline residential, business, retail/wholesale L2 and L3 VPNs,and IP services• Full Design Guide available athttps://communities.cisco.com/community/solutions/sp/mobility?view=documents#/?tagSet=undefined© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 22
TDM BTS, ATM NodeBATM or TDMBSCATM RNCIP eNBS1-U<strong>Mobile</strong><strong>Transport</strong> PESAE GatewayMMEX2-C, X2-UV4 or v6 <strong>MPLS</strong> VPNS1-C<strong>Mobile</strong><strong>Transport</strong> PESAE Gateway<strong>Mobile</strong> Access <strong>Network</strong>IP/<strong>MPLS</strong> <strong>Transport</strong><strong>Mobile</strong> Aggregation <strong>Network</strong>IP/<strong>MPLS</strong> <strong>Transport</strong><strong>Mobile</strong> Packet Core <strong>Network</strong><strong>Mobile</strong> <strong>Transport</strong> PEASR9000IP/<strong>MPLS</strong> <strong>Transport</strong>Cell Site GatewayASR-901, 2941Fiber or uWave Link, RingAggregation NodeASR903 ME-3800X, ASR-9000DWDM, Fiber Rings, H&S, Hierarchical TopologyCore NodeCore NodeCRS-3, ASR-9000CRS-3, ASR-9000DWDM, Fiber Rings, Mesh Topology© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 23
RAN IGP ProcessOSPF/ ISISAggregation Domain(OSPFx/ISIS1)Core DomainOSPF0/ISIS2Aggregation Domain(OSPFx/ISIS1)RAN IGP ProcessOSPF/ ISISRedistribute MPCiBGP communityinto RAN Access IGPAggregation NodeCoreiBGPiBGPIPv4+LabelRR CoreAggregation NodeRANAccessAggregationNodeiBGPAggregationBGP CommunityCoreCoreMPCPECoreiBGPAggregationBGP CommunityAggregationNodeRANAccessRedistributeCSN Loopbacksinto 3107 iBGPAggregation NodeiBGP Hierarchical LSPAggregation NodeLDP LSP LDP LSP LDP LSP LDP LSP LDP LSPLFA L3 convergence < 50msBGP PIC Core L3convergence < 100msBGP PIC Edge L3convergence < 100ms© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 24
LTE,3G IP UMTS,<strong>Transport</strong>IPSLAProbeIPSLA PMIPSLAProbeVRFVRF<strong>Transport</strong> OAM Service OAM<strong>MPLS</strong> VRF OAM3G ATM UMTS,2G TDM,<strong>Transport</strong>IPSLAProbeIPSLA PM<strong>MPLS</strong> VCCV PW OAMIPSLAProbeCC / RDI (BFD)Fault OAM (LDI / AIS / LKR)On-demand CV and tracing (LSPPing / Trace)Performance management (DM, LM)End-to-end LSPWith unified <strong>MPLS</strong>IP OAM over inter domain LSP – RFC 6371,6374 & 6375RFC6427, 6428 & 6435NodeBCSGAggregation<strong>Mobile</strong> <strong>Transport</strong> GWRNC/BSC/SAE© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 25
QCIValueResourceTypePriorityDelay Error LossBudget (1) Rate (2)1 (3) 2 100 ms 10 -2 Conversational VoiceExample Services2 (3)4 150 ms 10 -3 Conversational Video (Live Streaming)GBR3 (3) 3 50 ms 10 -3 Real Time Gaming4 (3) 5 300 ms 10 -6 Non-Conversational Video (BufferedStreaming)5 (3) 1 100 ms 10 -6 IMS Signalling6 (4) 6 300 ms 10 -67 (3) Non-GBR 7 100 ms8 (5) 89 (6) 910 -3300 ms 10 -6Video (Buffered Streaming)TCP-based (e.g., www, e-mail, chat, ftp, p2pfile sharing, progressive video, etc.)Voice, Video (Live Streaming), InteractiveGamingVideo (Buffered Streaming)TCP-based (e.g., www, e-mail, chat, ftp, p2psharing, progressive download, etc.)© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 26
<strong>Mobile</strong> Technology Frequency Time / PhaseCDMA2000 ±50 ppb Goal:
TDM(SDH)SyncE1588 PTPMicrowaveSyncE, ESMCTDM(SDH)1588 BCBSC, ATM RNCPRC/PRSIP/<strong>MPLS</strong> <strong>Transport</strong> <strong>Network</strong>1588 BC/PMCEthernet FiberFuture1588 BC1588 Phase1588 PMCPacket Master ClockPhaseExternal SynchronizationInterface (Frequency)External SynchronizationInterface (ToD and Phase)Global Navigation Satellite <strong>System</strong> (e.g. GPS, GLONASS,<strong>Mobile</strong> Aggregation GALILEO)- <strong>Network</strong> PRTC, Primary Reference Time Clock <strong>Mobile</strong> Packet Core <strong>Network</strong><strong>Mobile</strong> Access <strong>Network</strong>IP/<strong>MPLS</strong> <strong>Transport</strong><strong>Mobile</strong> Aggregation <strong>Network</strong>IP/<strong>MPLS</strong> <strong>Transport</strong><strong>Mobile</strong> Packet Core <strong>Network</strong><strong>Mobile</strong> <strong>Transport</strong> PEASR9000IP/<strong>MPLS</strong> <strong>Transport</strong>Cell Site GatewayASR-901, 2941Fiber or uWave Link, RingAggregation NodeASR903, ME-3800X, ASR-9000DWDM, Fiber Rings, H&S, Hierarchical TopologyCore NodeCore NodeCRS-3, ASR-9000CRS-3, ASR-9000DWDM, Fiber Rings, Mesh Topology© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 28
© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 29
• A modular suite of applications• A-to-Z management for nextgenerationpacket and transportnetworks and order fulfillment• Designed for lower Total Costof Ownership (TCO)• Visit the Cisco Prime overview atwww.cisco.com/go/prime-sp© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 30
© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 31
<strong>Unified</strong> <strong>MPLS</strong> simplifies the transport and service architecture• Seamless <strong>MPLS</strong> LSPs across network layers to any location in the network• Flexible placement of L2/L3 transport virtualization functions to concurrentlysupport 2G/3G/4G services• Service provisioning only required at the edge of the network• Divide & Conquer strategy of small IGP domains and labeled BGP LSPs helpsscale the network to hundred of thousands of LTE cell sites• Simplified carrier class operations with end-to-end OAM, PerformanceMonitoring and LFA FRR fast convergence protection• Join the Community at https://communities.cisco.com/community/solutions/sp/• Whitepaper athttp://www.cisco.com/en/US/partner/prod/collateral/optical/ps5726/ps11348/white_paper_c11-656286.html© 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential 32
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