Virtualized Performance Assurance for Next-Gen Backhaul Networks
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Transcript of 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
3 ©2016ACCEDIANNETWORKSCompanyConfidential
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…
4 ©2016ACCEDIANNETWORKSCompanyConfidential
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
5 ©2016ACCEDIANNETWORKSCompanyConfidential
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
6 ©2016ACCEDIANNETWORKSCompanyConfidential
VoLTErequires• Verylowlatency,jitter,andloss• Ideally,itsownclassofservice(VLAN)
Standardmeasurementsarenotenough• Verysensitivetoback-to-backpacketloss Lossburstmetric
TRANSFORMINGBACKHAUL● VoLTE “VoLTEmustsucceed:MNOsneedtorecover3Gvoicespectrumfor5G.”
Diversemetricsarecriticaltomonitornextgenbackhaul.20
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20:50
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21:40
21:50
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22:00
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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
7 ©2016ACCEDIANNETWORKSCompanyConfidential
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:
8 ©2016ACCEDIANNETWORKSCompanyConfidential
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
9 ©2016ACCEDIANNETWORKSCompanyConfidential
VIRTUALIZEDINSTRUMENTATION● VISIBILITYWITHOUTCOMPROMISE “Combiningexceptionalprecision&scalewithsoftwareflexibility.”
Instrumentation
2015Hardware-Based
Software-Based
NOW Virtualized
DesignedintheFuture• Builttomeettheemergingneedsofbackhauloperatorsin2017andbeyond.
ProvenDeploymentsatScale• Monitoring¼millionofbackhaullinksworldwidedeployedin2016.
10 ©2016ACCEDIANNETWORKSCompanyConfidential
VIRTUALIZEDINSTRUMENTATION● VISIBILITYWITHOUTCOMPROMISE “Combiningexceptionalprecision&scalewithsoftwareflexibility.”
NID
=Legend:
Accedian Other Router
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
11 ©2016ACCEDIANNETWORKSCompanyConfidential
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
Control&ResultsProcessing
Control&ResultsProcessing
VirtualizedPerformanceMonitoring
AdvancedQoE&Assurance
FPGA
Patentedtechnologypermitsvirtualizedsolutionstoretainhardwareprecision
12 ©2016ACCEDIANNETWORKSCompanyConfidential
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
13 ©2016ACCEDIANNETWORKSCompanyConfidential
OptimizeQoE
“Instrumentingallkeypointsalongtheservicepath.”
IdentifyIssues
LocateSource
Standards-BasedNEPMReflectors
TestPoints
VirtualPMProbe(Actuator)
CSR
Access
AggregationTransport
Core
End-to-End
Virtual&Physical
PMAgent/VNF
NFVI
TakeAction
VIRTUALIZEDINSTRUMENTATION● COMPLETEVISIBILITY
14 ©2016ACCEDIANNETWORKSCompanyConfidential
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.”
15 ©2016ACCEDIANNETWORKSCompanyConfidential
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
16 ©2016ACCEDIANNETWORKSCompanyConfidential
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
17 ©2016ACCEDIANNETWORKSCompanyConfidential
“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
18 ©2016ACCEDIANNETWORKSCompanyConfidential
“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
19 ©2016ACCEDIANNETWORKSCompanyConfidential
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
20 ©2016ACCEDIANNETWORKSCompanyConfidential
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
21 ©2016ACCEDIANNETWORKSCompanyConfidential
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
22 ©2016ACCEDIANNETWORKSCompanyConfidential
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
23 ©2016ACCEDIANNETWORKSCompanyConfidential
VisionMETRIX™CustomerPortal
DEPLOYMENTEXAMPLE● WHOLESALEBACKHAUL
NID
=
Accedian Other Router
MNO
EPCEnd-to-EndSLAs
TWAMP/OAM
ReflectorSwitch
DIRECTOR
ControllersScaleToCoverDomains
L3
L2
VisionMETRIX™
SDN- NMS-B/OSS
Rich1-WayMetricsSingle,UnifiedView5G-GradeMonitoring
24 ©2016ACCEDIANNETWORKSCompanyConfidential
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
25 ©2016ACCEDIANNETWORKSCompanyConfidential
ant Module
Nano Module
VIRTUALIZEDINSTRUMENTATION● EXTENDINGPOSSIBILITIES
AccedianNetworkPerformanceModules: “reducinghardwaretotheminimum”
Virtualizedcapacitiescanbeextendedwherehardwareisirreplaceable:
Fullline-ratetesttrafficgeneration turnup&serviceactivationtesting
RemoteQoS&QoEprobing testfrom—andbetween—remotesites
Remotepacketcapture&time-stamping distributedpacketbrokering
Samevirtualizedcontrol¢ralizedresultsaccess
BandwidthMetering utilizationµburstmonitoring
26 ©2016ACCEDIANNETWORKSCompanyConfidential
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
27 ©2016ACCEDIANNETWORKSCompanyConfidential
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