presented at - Greater Chicago Chapter SCTE · MSO Operations Challenges ... Motorola proprietary • Settops • Data headend • Outside plant • Digital headend • Transmission

SCTE Chicago Seminar September/21/20000SCTE Chicago Seminar September/21/20000

Network ManagementNetwork ManagementIt’s Not Just Status Monitoring Any MoreIt’s Not Just Status Monitoring Any More

Raj K. DeshpandeRaj K. DeshpandeIPNS Network Operation SolutionsIPNS Network Operation SolutionsBroadband Communication SectorBroadband Communication Sector

Motorola Inc.Motorola Inc.

presented at:presented at:SCTE Chicago Chapter Seminar SeriesSCTE Chicago Chapter Seminar Series

September 21, 2000September 21, 2000

Company ConfidentialCompany Confidential


MSO Operations ChallengesMSO Operations Challenges

Company ConfidentialCompany Confidential


The Cable Video ServiceThe Cable Video Service

Satellite & Off-air Video

Digital Video Access

Controller

Video Servers

Interactive Application

Servers

Return PathDemod

RF/Optical Headend

Out-of-band Modulator

Integrated Receiver

Transcoder

Modular Processing

System

Interactive Network

Controller

DCT

TVOther

Home Configurations

OpticalNode

RF Distribution

Video Distribution

Video Content


The Cable Data ServiceThe Cable Data Service

ISP POPInternet



Controller

Video Servers


Servers

DNS/DHCP Server

Return PathDemod

RF/Optical Headend


Integrated Receiver

Transcoder

Modular Processing

System

Interactive Network

Controller

Cable Modem

DCT

PCHome LAN

TVOther

Home Configurations

OpticalNode

OpticalNode

RF Distribution

Video Distribution

CMTSEdge Router

Video Content

VPN FirewallInternet


The Cable Telephone ServiceThe Cable Telephone Service

PSTN Gateway

Call Controller

ISP POP

PSTN

Internet



Controller

Video Servers


Servers

DNS/DHCP Server

Return PathDemod

RF/Optical Headend


Integrated Receiver

Transcoder

Modular Processing

System

Interactive Network

Controller

Communi-cations

Gateway

Cable Modem

DCT/TA

DCT

TelephonePC

Telephony Adapter

Home LAN

PCHome LAN

TelephoneTV

Home LAN

PCOther

Telephone

TVOther

Home Configurations

OpticalNode

OpticalNode

OpticalNode

OpticalNode

RF Distribution

Video Distribution

CMTSEdge Router

Video Content

IPDTVPN FirewallInternet


The “Box” ViewThe “Box” View

PSTN Gateway

Call Controller

ISP POP

PSTN

Internet



Controller

Video Servers


Servers

DNS/DHCP Server

Return PathDemod

RF/Optical Headend


Integrated Receiver

Transcoder

Modular Processing

System

Interactive Network

Controller

Communi-cations

Gateway

Cable Modem

DCT/TA

DCT

TelephonePC

Telephony Adapter

Home LAN

PCHome LAN

TelephoneTV

Home LAN

PCOther

Telephone

TVOther

Home Configurations

OpticalNode

OpticalNode

OpticalNode

OpticalNode

RF Distribution

Video Distribution

CMTSEdge Router

Video Content

IPDTBroadband

Media Gateway

PC Based Player

TV Based PlayerOpticalNode

StreamingMedia

Server

StreamingMedia Portal

Private Internet

VPN FirewallInternet

Operations Support Systems


Service Provider / Network OperatorService Provider / Network Operator

Digital Video Infrastructure

(Proprietary)


(Proprietary)

Broadcast Video Services Interactive SettopInteractive Settop

Yesterday’s Management ChallengeYesterday’s Management Challenge

HFCPlant



Regional/HeadendNetwork

HFCPlant


(Proprietary)


(Proprietary)

Telephony Infrastructure

(Proprietary)


(Proprietary)

IP Data Infrastructure(DOCSIS)


Broadcast Video Services

Video on Demand Services

Interactive App Services

Telephony Services

Internet Access Services

Interactive SettopInteractive Settop

Cable ModemCable Modem

NIUNIU

Today’s Management ChallengeToday’s Management Challenge


Network OperatorNetwork Operator


HFCPlant

Service ProvidersService Providers


(OpenCable)


(OpenCable)


(PacketCable)


(PacketCable)






CLEC Telephony Services


Streaming Media Services


Advanced Interactive Settop



BTIBTI

MTAMTA

Tomorrow’s Management ChallengeTomorrow’s Management Challenge

Residential Gateway

Residential Gateway

VPNServices

Home NetworkServices

Video Telephony Services


Addressing Today’s Management ChallengesAddressing Today’s Management Challenges



HFCPlant


(Proprietary)


(Proprietary)


(Proprietary)


(Proprietary)






Telephony Services




NIUNIU

Network integrity

Infrastructure configuration and integrity

Service provisioning Device

management


Network OperatorNetwork Operator


HFCPlant

Service ProvidersService Providers


(OpenCable)


(OpenCable)


(PacketCable)


(PacketCable)






CLEC Telephony Services


Streaming Media Services





BTIBTI

MTAMTA

Residential Gateway

Residential Gateway

VPNServices

Home NetworkServices

Video Telephony Services

Addressing Tomorrow’s Management Addressing Tomorrow’s Management ChallengesChallenges

Mediated access

Service Level

Agreement

Integrated infrastructure management

Automated provisioning

Carrier-grade performance


What is OSS for Cable Networks?What is OSS for Cable Networks?


Management ScopeManagement Scope• Network Management

– Configure and Activate Network Elements– Monitor and perform pro-active maintenance of the Network

Elements– Provide standard open interfaces for multi-vendor, multi-solution

integrated network management.– Provide open interfaces to allow necessary instrumentation of

Network Elements to enable end-customer service activation and modification

– Provide applications that enable the customer to enhance the network by add/modify of Network Elements

• Service Management– Provide applications for service activation - integrate with customer

work flow management solution– Provide applications for reliable billing - integrate with customer

billing and service assurance applications.– Provide applications that enable simple, self, single-click service

activation


Key OSS FunctionsKey OSS Functions

Functions• Configuration management• Fault detection and isolation• Performance monitoring• Accounting and billing• Security and access control

Service Management

Element Management

Network Management

• Video• VOD• Interactive Apps• Streaming Media• VPN

• HFC network• Regional network

Motorola proprietary• Settops• Data headend• Outside plant• Digital headend• Transmission headend

Standards-based• Settop• Residential gateway• PacketCable BTI• DOCSIS cable modem

Laye

rs • DOCSIS infrastructure• Telephony infrastructure• Video infrastructure

• Home Network• Internet Access• Video Telephony• Voice Telephony


Management FunctionsManagement Functions• Configuration

– Service Activation– Network Provisioning– Resource Management

• Fault– Fault Reporting– Correlation/Summarization

• Performance– Service Level Agreements– Performance Monitoring

• Security– Network Security– Access Control– Key Management

• Accounting– Usage Monitoring– Transaction Records


How do we approach the problem space ?How do we approach the problem space ?Example OSS solutionExample OSS solution


OSS Reference ArchitectureOSS Reference Architecture

Mediation &Provisioning Engine

Mediation &Provisioning EngineService

Managers

ISPService

OSS/BSS

ISPService

OSS/BSS

Network Managers

Element Managers

Network Elements

CPECPE RegionalIP NetworkRegional

IP NetworkRegional

FiberNetwork

RegionalFiber

Network

Network Operator

Service Provider

VideoHeadendVideo

HeadendTelephonyHeadend

TelephonyHeadend

Trans.HeadendTrans.

HeadendData

HeadendData

Headend

EMSEMS

OutsidePlant

OutsidePlant

EMSEMSEMSEMSEMSEMSEMSEMSEMSEMSEMSEMSEMSEMS

TelephonyService

OSS/BSS

TelephonyService

OSS/BSS

VideoService

OSS/BSS

VideoService

OSS/BSS

DataManagerData

Manager VoiceManagerVoice

ManagerVideoManagerVideo

Manager

OSS/

BSS

RegionalNetwork Manager

RegionalNetwork Manager

Broadband Network Resource Manager

Broadband Network Resource Manager

Address Manager

(DHCP / DNS)

Address Manager

(DHCP / DNS)

HFC Access Network Manager

HFC Access Network Manager

PacketCable Security Manager

PacketCable Security Manager


Motorola Provisioning SolutionMotorola Provisioning Solution• Supports Rapid Deployment

– Easily integrated into existing Higher Level OSS architectures – Web-based interface (either CSR or consumer)

• Customer self provisioning– Secure subscriber interface– Supports retail model– Self-service upgrades and addition of new services– Impulse and on-demand services

• Fully scalable– Supports multiple BTI EMSs, IPDTs, DHCP and TFTP servers– Supports DNS for naming individual BTIs


HFC Access Network ManagerHFC Access Network Manager• Configuration management

– Network element configuration tools– Interface with provisioning and inventory systems

• Fault management– Alarm management and correlation

• Performance management– Collect and process performance related statistics– Track performance versus SLA’s and QoS business commitments

• Accounting management– Collect usage / transaction based statistics; forward to billing

systems• Security management

– Ensure information is shared with the appropriate users/systems


Network Resource ManagerNetwork Resource Manager• Resources

– Hardware• Plant• Headend

– Spectrum• Upstream• Downstream• Network segments

– Channel bandwidth• DOCSIS• MPEG• Special purpose

– IP addresses

DeploymentDeploymentMonitoringMonitoring

PlanningPlanning

Configuration Information

Utilization Data


Network Resource ManagerNetwork Resource Manager• Planning

– Plan from forecast or utilization data– Integrated planning of network layers

• Master plan for all critical resources• Consistency checking across/among layers

• Deployment– Coordinated configuration parameters across network

devices• Monitoring

– Utilization and performance statistic collection– Alarms– Reports


Address Management ServerAddress Management Server• Rapidly design & deploy IP infrastructure

– Full featured GUI – easy management and troubleshooting • Create and manage large domains

– Diagnostic tools – including logging of all DHCP operations/events – Support address pools on multiple subnets

• Standards based and extensible – Compliant with relevant RFC’s: 1542, 2131, 2132, 1034, 1035, 2136,

1995, 1996 – Name Synchronization between DHCP and DNS – Supports Redundant DHCP servers – Extensibility – providing the ability to write custom define extensions

to the DCHP process – Support of Custom DHCP options – Client class support to differentiate services to clients


PacketCable Security ManagerPacketCable Security Manager• Provides authentication and key management

services to maintain integrity of PacketCable security mechanisms

• Kerberos Distribution Center (KDC) supporting public key initialization (PKINIT)– Authentication server (AS)

• Validates identity of BTIs– Ticket granting server (TGS)

• Provides ticket to BTIs for signaling with call agents/IPDTs• Interacts with provisioning servers and call agents• Initial distribution plus periodic renewal


CPE ManagerCPE Manager• Device Configuration

– MTA / CM downloadable configurations• Life-test polling

– 20k devices each 15 min.• Event Viewer (trap / Inform)• Device Viewer / Editor• Topology

– Device Discovery CMTS, BTI, CM– Node representation

• Supports PacketCable MTA MIBs• Web based Client


CMTS ManagerCMTS Manager• DCM EMS (Voice & Data)• IFM EMS• RFM EMS• Functionality

– Polling (configurable)– Data Collectors– Trap collection and filters– Device viewer / editor– Ping and Loop back tests– Web based clients– Trap forwarding to HFC ANM


HFC Plant Management with HFC Plant Management with the Broadband Test Pointthe Broadband Test Point

SCTE Chicago Seminar September/21/20000SCTE Chicago Seminar September/21/20000Advanced Services and the Advanced Services and the HFC Network HFC Network

• HFC networks were designed primarily to support the distribution of broadcast media, specifically video.

• HFC networks have several “interesting” characteristics, namely:– HFC network designs rely on a “Shared Network” with many single points of

failure. A single failure could result in loss of service to “many” customers.– Historically the majority of the HFC network is NOT “managed”– HFC designs include a lot of return path “combining”. Potentially adverse

condition relative to return path ingress.• Comprehensive network management and modified plant designs can

provide five nines of availability.


IP / PSTNNETWORK

X

Hybrid Fiber-Coax

Network

Note 1. High-Day Busy Hour = 14% active phones

Note 2: At 20% penetration rate

•Forward Path HFC-network ‘Event’•RF Bandwidth Degradation•Fiber-optic Equipment Failure•RF Equipment Failure•Interconnection Failure

The HFC Network was Not ideally Architected to support Telephony• Older designs rely on SHARED resources which can greatly impact network and service availability.

• Specific failures in a SHARED resource in an older network in a typical forward-path will impact up to500 active POTs calls1 and 4000 POTS lines2 in an environment with 18,000 homes-passed.

• Historical solutions leave 99% of the forward-path HFC shared resources unmanaged.


IP / PSTNNETWORK

Hybrid Fiber-Coax

Network

Note 1: At 20% penetration rate

Note 2. High-Day Busy Hour = 14% active phones

•Return Path HFC-network ‘Event’•RF Noise•Interconnection Failure

The HFC Access-Network Was Not Architected for Telephony•Return path network events are exacerbated by the use of COMBINING resources.

•Certain failures in a SINGLE, UNSHAREDresource in a typical return path will impact all 500 active POTs calls, 4,000 POTS lines in an environment with 20,000 homes-passed.

•Any wired home with or without a terminal device is effectively a shared-resource on the HFC network with potential to impact all 500 active POTs calls and 4,000 POTS lines

•Current solutions leave the return path effectively unmanaged.


Hybrid Fiber-Coax

Network

•In-Line Digital Instrumentation•Detects Return-Path Problems•Sectionalizes Problems•Provides Actionable Alerts•Limits Network Exposure to Return Path Noise

Proposed Step-Function Improvement in HFC Network Management•Comprehensive management of the HFC forward-path via intelligent end-terminal devices.

•Comprehensive management of the HFC return-path via intelligent network test points.

IP / PSTNNETWORK

•Intelligent End-Terminal Devices•Detects Forward-Path Problems•Sectionalizes Problems•Provides Actionable Alerts•Limits Network Exposure to Return Path Noise


Broadband Test PointBroadband Test Point

• Resides on strands or in nodes• Correlates DOCSIS MAC and end device responses to identify

downstream devices for topology discovery• Measures upstream and downstream digital performance• Measures upstream “quiet” noise conditions

DOCSISCable

Modem

Downstream from CMTS

Upstream fromEnd

Devices

RF/DigitalNoise

Measurement

Control/Data

StorageUpstream to CMTS


Broadband Test PointBroadband Test Point• Automatically discovers and locates all DOCSIS devices (CM,

BTI, DCT5000s and other BTPs)– Enables segmentation of network via autodiscovery– Supports mass deployments of DOCSIS and PacketCable devices

• Proactive ingress management – Find ingress source before it affects service levels– Integral part of Motorola’s bandwidth management solution

• Data reduction – Automates evaluation of spectrum analysis plots– Actionable alarms: alarms are limited to high confidence events,

declared events are linked to a physical location• May be used with any plant design, not just “Motorola” plants

* Patent Pending


1,2,3,4,5,6,7,8, 9,10,11,12 100, 101

1200 Home-PassedServing Area

(1 of 16 per Hub)

CMTS Receive CMTS Transmit

105

Forward Path Lasers (4)

Return Path Receivers(16

)

Fiber-Optic Nodes (16)

Bi-directional RF Amplifiers (800 -1000)

20K Home-Passed Hub

Knows: 1,2,3,4

1 2 3 4

5 6 7 8

9 10 11 12

100

101

102

103

104

1,2,3,4,5,6,7,8, 100

1,2,3,4,5,6,7,8, 9,10,11,12 100, 101,102

1,2,3,4,5,6,7,8, 9,10,11,12 100, 101,102, 103 1,2,3,4,5,6,7,8,

9,10,11,12 100, 101,102,103, 104

1,2,3,4,5,6,7,8, 9,10,11,12 100,

101,102,103, 104, 105

Topology DiscoveryTopology Discovery



Forward Path Fault

Detection and

Sectionalization

Forward Path Fault Detection

and Sectionalization

BTPPSA = 300 Homes

BTPPSA = 75 Homes

HFC Downstream Network HealthHFC Downstream Network Health



Return Path Fault Detection

and Sectionalization

BTPPSA = 300 Homes

BTPPSA = 75 Homes

NTPPSA = 1200 Homes

HFC Upstream Network HealthHFC Upstream Network Health


Thank YouThank You

Documents

presented at - Greater Chicago Chapter SCTE · MSO Operations Challenges ... Motorola proprietary • Settops • Data headend • Outside plant • Digital headend • Transmission