virtualized performance assurance for next-gen backhaul networks

MEETINGTHENEEDSOFNEXTGENBACKHAUL

Achievingnewlevelsofvisibilitywithvirtualizedinstrumentation.

2016-Sep-12ScottSumner   VPStrategicMarketing

AMessagefromtheFuture

2 ©2016ACCEDIANNETWORKSCompanyConfidential

BACKHAUL● TODAY

 NIDshelpyoumeetandreportonSLAsrequiredtowinbackhaulbusiness

• Packetloss,jitter,latency,availability

  Y.1731,PAA,TWAMP

• Demarcation/OAM

• Monthlyreporting

  “MeetingMNOdemandsmeansbusiness.”

NID

=Legend:

Accedian Other Router

MNO

EPC

Backhaul

End-to-EndSLAs


BACKHAUL● TOMORROW

  We’vebeentothefuture…

• WeworkwithleadingedgeMNOswhereGigtothephone isnormal.

• WeworkwithleadingU.S.MNOs,andthey’recatchingup,quickly.

Backhaulisbeingtransformedby:

NFV

TrafficGrowthLTE-A

&5G

VoLTE

½theBandwidth

UsedbyVideo

50%

75%

MobileData

GrowthLastYear

  Here’swhatwelearned…


BACKHAUL● TOMORROW

 Atthesametime,backhaulnetworksarebecomingmorecomplex

• GbE transitioningto10G• Multipleassembleddomains• Multiplevendors,mixofL2/3

 Performancevisibilityisfragmented:• Differentlevelsofprecision• Differentgranularity• Unevenmeasurementsupport

  “Thenextwaveiscoming.”

µs msms min

1way

Silosystemstoaccess,learnandmaintain

RT L2 L3

Anewlevelofvisibilityandreportingisrequired.

Backhaulisbeingtransformedby: LTE-A &5G VoLTE NFV Traffic


LTE LTE-A 5G ChangeThroughput

(Mbps)10 100 1,000 770x

Latency(ms,1way)

30 10 ½ 60xAvailability(downtime/day)

1.2min 8sec 540x

TRANSFORMINGBACKHAUL● LTE-A&5G   “TheNewNormal.”

SpecsTighten

0%

100%

Throug

hput

2%1%0.5% 1½%

20%

0.1%

80%↓50%↓40%↓5%↓

PacketLoss

  NewRelationshipsEmerge

15ms

50%

Increased Delay DropInThroughput

AverageUtilization20%

Mbp

s

MicroburstsHitMobileNetworks


  VoLTErequires• Verylowlatency,jitter,andloss• Ideally,itsownclassofservice(VLAN)

  Standardmeasurementsarenotenough• Verysensitivetoback-to-backpacketloss  Lossburstmetric

TRANSFORMINGBACKHAUL● VoLTE  “VoLTEmustsucceed:MNOsneedtorecover3Gvoicespectrumfor5G.”

Diversemetricsarecriticaltomonitornextgenbackhaul.20

:10

20:20

20:30

20:40

20:50

21:00

21:10

21:20

21:30

21:40

21:50

22:00

22:00

22:10

22:20

22:30

0.4

0.5

0.3

0.2

0.1

PLR%

0

LostBurst>5packets*

MajorityofcallsLOST

AllowableLatency20ms

*5packetsat20msintervals,usingTWAMPforsyntheticpacketlossmeasurement

  VoLTEQoE Monitoring

• AccuratelyestimateuserexperiencewithR-factor,MOSscore

• LocalizeVoLTEissues:inbackhaulornot?• One-waymetricsidentifydirectionalissues

  “Icanhearyou,canyouhearme?”

Tier-1Network,AsiaPacketLoss


TRANSFORMINGBACKHAUL● VIRTUALIZATION

  LTE-A&5GrequireoperatorstovirtualizetheEPC,andintroducecloudRAN(C-RAN).

 Virtualizednetworksthatspanthebackhaularenolongerstaticandpredictable.

 TraditionalNetworks  Predictablecause&effect.

  VirtualizedNetworks

 …interactacrossadditionaldimensions,oftendeliveringunexpectedoutcomes.

SDNController 25

0

250

200

200

150

150

100

100

50 50

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 secUE

Throu

ghpu

t(Mbp

s)

Delay(m

icrosecond

s)

>20%PacketLoss

THROUGHPUT VSLATENCY*

*AsMeasuredfromEPCtoeNodeB

Precision&GranularityRevealthe“Invisible”

Tier-1example:


  Alarmfatigue• Tighterspecscreatea‘seaofred’• Hardtolocaterootcause— wheretofocus?• Needtoidentifyimportantevents

  Actionablemetrics• RicharrayofstatisticalandlogicalKPIscutthroughthenoise• Tailorto‘predict’issuesastheyapproach— beproactive

  Workwiththelightson• Operatinganetwork‘inthedark’isachallenging,tirelesseffort

THENEWNOC  “Worksmarter– youalreadyworkhard.”

PrevalenceofTWAMP,Y.1731meansanewlevelofvisibilityisnowpossible,withoutaddinghardwaretothenetwork.

TighterThresholds TighterSpecsareNOT theanswerto

Percentiles ConditionalMin/Max


VIRTUALIZEDINSTRUMENTATION● VISIBILITYWITHOUTCOMPROMISE “Combiningexceptionalprecision&scalewithsoftwareflexibility.”

Instrumentation

2015Hardware-Based

Software-Based

NOW Virtualized

  DesignedintheFuture• Builttomeettheemergingneedsofbackhauloperatorsin2017andbeyond.

  ProvenDeploymentsatScale• Monitoring¼millionofbackhaullinksworldwidedeployedin2016.


VIRTUALIZEDINSTRUMENTATION● VISIBILITYWITHOUTCOMPROMISE “Combiningexceptionalprecision&scalewithsoftwareflexibility.”

NID

=Legend:


MNO

EPC

End-to-EndSLAs

  VisibilitytoAccentuate:

• Multi-vendor,silosystems• Metricsatdifferentlayers• Varyingprecision&coverage• Troubleshootingandreportingrequiresconsolidatingdatafrommultiplesystems

• Customcode&integration

  BenefitsforBackhaulProviders

• EnhancesAccedianNIDstodelivernewlevelsofvisibility

• ExtendsmonitoringtootherNIDs&networkelements

• Segmentsthenetworkwithoutaddinghardware

µs msms min

1way RT L2 L3

extractsAddedValue

fromallnetworkassets


ACCEDIAN● VIRTUALIZINGPROVENSOLUTIONS

 Highly“Portable”ArchitectureCommon“code”for100%backwardcompatibilityPermitsseamlesssupportforlegacyB/OSSsystems

  “Seamlessmigrationfromphysicaltovirtual,scalingwithoperators’shifttoanalytics.”

  Virtualization

  Now  2004   2012

 10

0%

  Software

  Hardware

  VirtualizationMigration

PrecisePacketProcessing FPGA

Control&ResultsProcessing

PrecisePacketProcessing



VirtualizedPerformanceMonitoring

AdvancedQoE&Assurance

FPGA

Patentedtechnologypermitsvirtualizedsolutionstoretainhardwareprecision


VIRTUALIZEDINSTRUMENTATION● CONCRETEBENEFITS

  NoAppliancestoInstall   RapidDeploymentonCOTShardware  e.g.20regions,250,000endpoints,8weeks

  Uniform,ConsistentInfrastructure  no“sparing,”specialwarranties,installrequirements

  EasilyManaged&Scaled familiardatacenteroperations,scaleup/outasrequired

  Lowest-to-ZeroCapEx usebest-of-breedx86atvolumepricing

  SimplifiedProcurement nocomplexhardwareshipping&logistics,certification

VirtualProbes

SkyLIGHT™DirectorEasyScaleUp

EasyScaleOut

MonitoringSessions


  OptimizeQoE

  “Instrumentingallkeypointsalongtheservicepath.”

  IdentifyIssues

  LocateSource

Standards-BasedNEPMReflectors

TestPoints

VirtualPMProbe(Actuator)

CSR

Access

AggregationTransport

Core

End-to-End

Virtual&Physical

PMAgent/VNF

NFVI

  TakeAction

VIRTUALIZEDINSTRUMENTATION● COMPLETEVISIBILITY


VIRTUALIZEDINSTRUMENTATION● EFFICIENT INTEGRATION

  VirtualizedPlatformIntegration

  Command&Control easyintegrationintoB/OSS&SDNcontrol

  QoS&QoEKPIStreaming directconnecttobigdatalakes&fastanalytics

MonitoringSessions

BigDataDBQueue/InMemory

Interfaces

  Empoweringcloud-scaleanalytics:• OpenREST/XMLinterfacesforrapidintegration• Capturebillionsofmetrics/day,“asithappens”• Afoundationforananalytics-drivennetwork

Optimize Visualize Analyze

“Efficientaggregationintoanalyticswithinacentralizeddatacenter.”


WHYACCEDIAN?● EXCEPTIONALPRECISION&INSIGHT

  Microsecond-levelprecisiononCOTShardware

  Hardware-GradePrecision,Granularity&ScaleonaVirtualizedPlatform

Scalable

1-Way

Precise

Real-Time

Granular

  Patentedvirtualclocksyncextracts1-waymetricsfromround-triptests

  CPU-Efficientprobeengine+carrier-grademanagement=

  sub-secondgranularitywithmassscalability

  On-the-flycalculationoffersimmediatelyactionablemetrics

  COTSNIC

  Standards-BasedPMReflector

UniquetoAccedian

KernelBypass


TRANSFORMINGVISIBILITY● NEWVIEWPOINTS

  TheMostPrecise  TheMostGranular  TheMostDiverse  TheMostInsight

  NetworkState+Metrics

 PacketStatistics• Packetsreceived● lost● %lost• Bytesreceived● lost● %lost• Lossbursts● longest● shortest• Reorderedpackets● ratio%• Packetsduplicated● ratio(%)• CoS /DSCPPreservation(TX/RX)

1 Join&LeaveTimes● Join&LeaveFailures2 Round-Triponly

Min

Max

Average

Med

ian

25 50 75 95 96 98 99 StdDe

vPercentiles(configurable)

•Delay (Latency)

•Delay Variation (DV)

•Inter-Packet DV

•Packet DV (“Real Jitter”)

•Bandwidth Utilization

•Availability •IGMP Metrics1

MOS & R-Value

Per-Portor Per-Flow1-WayorBidirectional●

Layer2,3,4● Y.1731,TWAMP,UDP-Echo2

PatentedVirtualClock-Sync= sub50μs-precise1-WayKPIs

FullFlow-PathorSegmented● Sub-SecondSampling

Respecting:TTL,Pbit,DCSP,ETH-OEMMEGRanges

MetaMetrics• SessionID• Intervalsequencenumber• Intervaltimestamp(UTC)• Intervallength(Custom)

>100unique,real-timeKPIs

Percentiles ConditionalMin/Max

Insightfulalarms&events


  “Thepowertoresolveanynetworkissue.”

TRANSFORMINGVISIBILITY● HIGHGRANULARITY

  EffectsofSamplingGranularity• SameDataSet

0"

50"

100"

150"

200"

250"

300"

5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 60"

Mbp

s%

Transac+on%Group%Total%

CIR"

Total"5"s"Sampling"

0"

50"

100"

150"

200"

250"

300"

0" 15" 30" 45" 60"

Axis%Title%

Transac.on%Group%Total%

CIR"

Total"15"s"Sampling"15min

Threshold MeasureEvery

NoProblem

0"50"100"150"200"250"300"350"400"

1" 3" 5" 7" 9"11"13"15"17"19"21"23"25"27"29"31"33"35"37"39"41"43"45"47"49"51"53"55"57"59"

Mbp

s%

Transac+on%Group%Total%

CIR"

Total"1"s"Sampling"

1min

AlarmMeasureEvery

0"100"200"300"400"500"600"700"

1" 4" 7" 10"13"16"19"22"25"28"31"34"37"40"43"46"49"52"55"58"

Mbp

s%

Transac+on%Group%Total%CIR"

Total"Flowmeter"MIN"

Total"Flowmeter"MAX"

Total"Flowmeter"AVG"

1SEC

max

avgmin

MeasureEvery

BigProblem

SmallProblem

PacketLoss

2.5%

0

2.5%

2.5%

5.0%

SamplingSpeed&StatsChangesEverything

  DetectingTransientIssues


  “Thepowertoresolveanynetworkissue.”

TRANSFORMINGVISIBILITY● HIGHPRECISION

  NoInsight

SamplingSpeed&AccuracyChangesEverything

PacketLoss

0

Delay (ms)2502.5%

2.0%

1.5%

1.0%

0.5%

200

150

100

50

PacketLoss

0

Delay (ms)2502.5%

2.0%

1.5%

1.0%

0.5%

0

200

150

100

50

0

  PacketLoss  10Samples/Sec

  PacketLoss  500Samples/Sec

1.2%

0.1%

  Delay  0.5msPrecision

  Delay  3µsPrecision

500µs

3µs

PacketLoss

0.20%

0.18%

Delay

0

[ms]

2

4

6

8

  Tier-1MNOExample  Precisionrevealedrecurringringswitchinstability

thatcorrelatedtofirmwareissueonrouters

StatisticalaccuracyofsyntheticpacketlossmeasurementsaredocumentedintheMEF35.1,ServiceOAMPerformanceMonitoring ImplementationAgreement(2015),andITU-TG.8013/Y.1731SpecificationforOperation,administrationandmaintenance(OAM)functionsandmechanismsforEthernetbasednetworks.

  CompleteInsight


INSIGHTIMPROVINGQoE ● ACTIONSFROMANALYTICS  “Tier-1LTEOperator:networkimprovementsresultingfrom1monthofmonitoring”

  ActionstoimprovequalityofLTEbroadband&VoLTE

Type Impairments Action ResultSubscribersAffected

HardwareDefect

Delay,Jitter,Loss ↑ Replace SFP Improvedvoice quality,reducedcall

dropsinaffectedcell 100’s

SystemOverload

Delay,Jitter,Loss↑

Addsmallcellstomacro

ImprovedVoLTE connectivity,callsetuptime&QoE,broadband

throughputandlatency10,000’s

SoftwareDefect

Excessive DelayWithoutAlarm

Replace 10GRouter

Improved throughput inurbanareaservedbymultipleeNodeBs by35% 100,000’s

NetworkCongestion

Loss↑,Throughput↓

Change queuesize(routerCBS) Improvedcarrier aggregation

efficiency:improvedmetroregionthroughputby25%

100,000’sLoss↑ Increasebackhaul

capacity

TopologyDefect Delay>10ms Divide bigring

intosmallerrings 30%+improvementinthroughput 1,000,000’s

FullyVirtualisedEPCwithCloudRAN

VirtualisedInstrumentation

500thousand

1Trillion

NetworkWideAnalytics

DIRECTIMPACT

MoreNetwork

$0 CapEx30 Days


VIRTUALIZEDINSTRUMENTATION● ANEWLEVELOFVISIBILITY

 VirtualizedInstrumentationWithoutCompromise• Aproven,patented,portabletechnologyplatform• Theperformance,precision,granularityofhardware• Theprogrammabilityandflexibilityofsoftware

 DisruptiveCost&Ubiquity• Rapiddeploymentatscale• Completenetworkcoverage• Affordableinsighteverywhere

 AugmentedAssurance• Real-timeintegrationwithbigdata/analytics• ExtendpossibilitieswithNFV-poweredmodules

  “Cost,performanceandeaseofdeploymentdeliverunrivalledinsight.”

  TheMostCompleteKPIs

AnyFlow

Sub-SecondSampling 

Speed

 Precision

 Focus

µSecResolution

AnyLocation

AnySegment

1-WayMetrics

  TheMostPreciseMeasurements


  VisionMETRIX™real-timeperformanceportals• Viewsforproviderandoperator• Scalestointernationalnetworks• SaaS- onlypayforwhatyouuse• Perminutevisibility• Reportsuniformlyovermultivendornetworks• Simplesetup,integrationwithNMS,B/OSS

  “AnIntegratedSkyLIGHT™Module.”

TRANSFORMINGVISIBILITY● SKYLIGHTANALYTICS

SLAsataGlance

Code&IT-FreePortalCreation

StackedMetrics

Multi-Circuit&PMDataDisplay


EPC VCXVCX

CSRBackhaulRings

VIRTUALPERFORMANCEASSURANCE● TIER-1DEPLOYMENTEXAMPLE  “MaintainingimpeccableQoS&QoEatcloud-scale.”

Standards-BasedNEPMReflectors

PerformancePlatform

DC

Avirtualizedinstrumentationlayer formulti-vendor,multi-technologynetworks

SkyLIGHTDirector

Controller/Probe

BigDataDB(e.g. HDFS)

StreamingQueue

(e.g.Kafka)

InMemory(e.g.Spark)

Visualize

AGR

AggregationLevel3

AGR

AggregationLevel 2Rings

AGR

AGR

AggregationLevel 1Rings

AGR

AGRCSR

Real-TimeAnalytics

Correlate Predict

VCX

Multi-Service SegmentedEnd-to-End

TestPoints

VCX

VCX

EPC

EPC

EPC

…20+times

…Upto15xUpto10x ~5x

• 20+EPC• 100keNodeB• 100kCSR• >17million

records/day• 51KPIs/record• ~20BKPIs/day

EPC

NationalTransport

SDNController&NFVO,NMS/OSS

10weeks


VisionMETRIX™CustomerPortal

DEPLOYMENTEXAMPLE● WHOLESALEBACKHAUL

NID

=


MNO

EPCEnd-to-EndSLAs

TWAMP/OAM

ReflectorSwitch

DIRECTOR

ControllersScaleToCoverDomains

L3

L2

VisionMETRIX™

SDN- NMS-B/OSS

Rich1-WayMetricsSingle,UnifiedView5G-GradeMonitoring


MEETINGNEXTGENBACKHAULSLAs

  Thevisibilityittakestodeliver:

• Percentiles&statistics  leadingviewpointdiversity

• MultipleCoS monitoring  seeallservices,andtheirimpactoneachother

• Precision&granularity  themostinsightfulmonitoring

• Real-timereporting,portals  easilyandsecurelyreport,withoutinvolvingIT

NewDimension Effect SolutionL2/3,Multivendor

NetworksDiscontinuous

Visibility • Uniformmeasurements:alllayersandlocations

AlarmFatigue SeaofRed,LongMTTR

• Percentile,statisticalandboolean alarms-actionableandpredictiveindicators

LTE-A/5G TighterSpecs • µsprecision,finegranularity

VoLTE

Losssensitivity • Lossburst&min/maxlossmetrics

1wayissues • 1-way&segmented metrics

QoE Validation • MOSscore

DedicatedCoS • Multi-CoS KPIs&CoS validation

Virtualization Multi-Metricinteraction • Widerarrayofmetricsforrootcauseanalysis

10GBackhaul NIDCost • Virtualizedinstrumentationeliminateshardware

Short-TermEvents Real-TimeReporting • Real-timemetrics*&real-timeportals

*sub-secondgranularity,reportedasquicklyasevery5seconds


ant Module

Nano Module

VIRTUALIZEDINSTRUMENTATION● EXTENDINGPOSSIBILITIES

  AccedianNetworkPerformanceModules:  “reducinghardwaretotheminimum”

  Virtualizedcapacitiescanbeextendedwherehardwareisirreplaceable:

  Fullline-ratetesttrafficgeneration  turnup&serviceactivationtesting

  RemoteQoS&QoEprobing  testfrom—andbetween—remotesites

  Remotepacketcapture&time-stamping  distributedpacketbrokering

  Samevirtualizedcontrol&centralizedresultsaccess

  BandwidthMetering  utilization&microburstmonitoring


VIRTUALIZEDINSTRUMENTATION● CONCLUSIONS

• Establishesanintegrated,completeviewofperformanceoveramulti-vendorinfrastructure.

• EnhancesthemonitoringcapabilitiesofexistingNIDs

• Extendstoanynetworkelement

• Seamlesslymonitorscore,aggregationandaccess

  Completevisibilitymeans:

• Fasterproblemdetection,isolation,MTTR

• CompliancewithnextgenSLAs:winbusiness

• Anoptimizednetwork:proactivefaultavoidance,performanceoptimized,prioritizedtraffic

  “BeLTE-A/5G/VoLTEready.”

UNIFORM ● HIGHPRECISION● GRANULARMulti-ServiceMeasurements

AllLayers&Locations● Gig&10G+

Standapartwithprovenperformance

Upliftyourentirenetwork,inweeks

Bringyourwholenetworktogether,andmanageitasasingleentity:

Competeonmorethanprice


LEARNMORE

Downloadsolutionbrieffromaccedian.com/library

https://accedian.com/library/?_sft_librarycategory=solution-brief#lte-a-and-5g-backhaul-performance-assurance

virtualized performance assurance for next-gen backhaul networks

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