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Making Broadcast IPTV

Standard & Scalable

Hosted by

Adi KishoreSenior AnalystHeavy Reading

A Light Reading Webinar

Sponsored by:

Wednesday, April 14, 2010

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Speaker

Tori DownesPrincipal Technologist

Network Protocols DivisionMetaswitch Networks

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Metaswitch Networks

2008/09 =2008/09 = 61.8M ($113.7M)61.8M ($113.7M)

Employees

Network Protocols Division (NPD)Customers include all of the top 10 worldwide communications equipment manufacturers

PNNIPNNI SVCsSVCs UNIUNI IISPIISP ILMIILMI

ATMATM

SIPSIP Megaco/H.248Megaco/H.248 MGCPMGCP DiameterDiameter Session BorderSession Border

Control (SBC)Control (SBC)

VoIP and IMSVoIP and IMSIP RoutingIP Routing

BGPBGP OSPFOSPF ISIS--ISIS RIPRIP PIMPIM IGMP/MLDIGMP/MLD

MPLSMPLS

MPLSMPLS RSVPRSVP LDPLDP VPNsVPNs VPLSVPLS

GMPLSGMPLS UNIUNI EE--NNINNI LMPLMP

OpticalOptical

SNA/IPSNA/IP SNAPSNAP--IXIX HISHISApplnsApplns

SNA/APPNSNA/APPN

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Todays Discussion

IPTV: Initial Deployment Drivers

Claiming the Pay TV Market

Video Trends & the Need for Rapid Innovation

IPTV Network Requirements & StandardsSummary/Conclusions

Q&A

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Initial IPTV deployments driven

by both defensive & offensive strategies

Consumer demand forbundling; competitive

benefits for single

service provider

Triple-play bundlepenetration still limited

HSI becomes thebattleground of the

future, forcing network

capacity expansion

ROI for network capexbetter with IPTV

Wireless substitution,competitive providers,

MSOs, VoIP driving fixed

line losses; providers

need new revenue

generating services

Bundle

penetrationin Europe

Source: ITU ICT Statistics; Eurobarometer 2008, based on surveys of EU-27 Households

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But IPTV providers are entering an established market;in many geographies they will need to steal subscribers

away from other providers

n= 394

Current Pay TV Provider

Source: Heavy Reading Survey of US Pay TV Subscribers, Oct. 2009

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Bundling does seem to be slowing churn, as averagetenure is growing among pay TV subscribers

Tenure with current provider

n= 394

Source: Heavy Reading Survey of US Pay TV Subscribers, Oct. 2009

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Still, more than 40% of subscribers are not gettingmultiple services from their pay TV provider,

which could be an opportunity

Additional Services From TV Provider

Telco TV subscribers more likely to be bundled subs.

n= 394

Source: Heavy Reading Survey of US Pay TV Subscribers, Oct. 2009

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IPTV is set to grow, but the expectation of innovationas a differentiator is implicit in market projections

(Subscribing accounts in thousands)

IPTV share of pay TV

to grow more than 4xover the forecast

period, primarily at

the expense of cable

Growth driven bybundle value,

customer

dissatisfaction,

monopoly end & new

services/innovation

Rapid innovation is an important part of the IPTV value proposition; a differentiatedservice is important to grow beyond the low hanging fruit of dissatisfied customers

Source: Pyramid Research

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Service providers also face threatsfrom a whole new set of competitors

In October 2009 unique viewers ofonline video grew 14.8% over theprevious year, streams per viewer grew9.9%, and time spent per viewer grew

23.8%. Nielsen VideoCensus

Time spent viewing video on socialnetworking sites increased 98% year-over-year, from 503.8 million minutes in

Oct. 08 to 999.4 million in Oct. 09.Video streams increased 45%, from240.8 million in Oct. 08 to 349.5 millionin Oct. 09. The Nielsen Company

10+ billion songs cumulativelydownloaded from the iTunes store;250+ million TV episodes and 33+million movies purchased and rented toMarch 09. Apple corporate statements

iTunes

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Third-party app enablement is a recognizedopportunity for service providers

Please indicate your level of agreement with the fol lowing statement: Exposing resources and capabilit ies to third-party service providers

will be crit ical to my companys future success.

Base: 81 service provider executives

Source: Heavy Reading Third Party Applications Enablers Study, 2008

0 5 10 15 20 25 30 35 40

Strongly

agree

Agree

Neither agree nor

disagree

Disagree

Stronglydisagree

Number of respondents

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IPTV: Problem Space

ProvidersService provider walled gardens

Content provider over the top

Free TV

Moving from more to less control of network/deliveryApplications

Broadcast IPTV multiple viewers per channel

in real-timeVideo-on-demand fixed/granular start-times

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IPTV: Deployments

High-profile carriers AT&T, Verizon, BT

Slightly different approaches in last mileAT&T U-verse = FTTNode + DSL

Verizon FIOS = FTTHome

Bandwidth versus cost?

Most using same vendors?

Solutions are semi-proprietaryDifficult to swap solution elements? IPTV in semi-isolated network subset?

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IPTV: Typical Architecture

CoreNetwork

ContentAcquis ition

ContentManagement

Local Content Insertion

VoD Servers

Residential Trip le-Play Customers

Content Domain

Network Domain

Network Domain

Consumer Domain

MetroNetwork

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How urgently do service providers

need to deploy broadcast IPTV?Should have already deployed it

Need to deploy within the next year

Need to deploy within three years

Need to deploy within five yearsDon't need to deploy

Audience Poll

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IPTV: Network Requirements

High quality Less than one visible artifact per two-hour movie = packet

loss rate lower than 10-6

High availability Need to provide > 5 nines (99.999%) availability

Impacts the network and individual devices

Scale Millions of subscribers ideally without limits

Interactivity

Instant channel change?Maximal use of network resources

Video bandwidth per channel is 2-12 Mbit/s

Common infrastructure with voice, data...

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IPTV: Standards (1)

Multiple standards bodies IETF, IMS (ITU & ETSI)

Multiple forums - Open IPTV Forum, IMS Forum

Mostly driven by vendors

Service providers have been slow to get involved

Multiple / partially overlapping approaches / optionsNone meet the requirement on their own

So have to mix n match and cross-pollinate

And some are relatively immature / incomplete

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IPTV: Standards (2)

Delivery approaches includeIP multicast

QoS/TE can only be solved by provisioningBut effective at head-end and over last mile

Multicast LDP (mLDP)

Maps IP multicast to LSPs

Relies on CoS (802.1p) / Diffserv; no QoS / TE

VPLS (Virtual Private LAN Service) withpseudowire (PW) mesh

Only scale to (at most) hundreds of PWs?

No bandwidth sharing

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IPTV: Standards (3)

Delivery approaches (contd)L3VPN multicast scales but competing

approaches Draft-ietf-l3vpn-2547bis-mcast = RFC in a few weeks But draft-ietf-rosen-vpn-mcast is implemented / deployed

2547bis-mcast uses BGP to build multicast tree whereas rosen

uses PIM and BGP

P2MP RSVP LSPs QoS / TE is built-in

Scales well - especially with LSP hierarchy with segmentation Multiple protection + restoration schemes

Check out our p2mp RSVP-TE white paper -www.metaswitch.com/rescenter/whitepapers.aspx

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IPTV: Standards (4)

Interactivity approachesIGMP proxy

Consolidates downstream channel request Reduces load on head-end

IGMP/PIM snooping A necessary hack for fast channel change

Head-end and network deliver large subset of channelsto edge

Edge device filters / switches channels as channel requests goby

Multi-topology PIM Builds multiple (diverse?) multicast trees

Helps with head-end / path redundancy

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IPTV: One Solution?

Channelrequest

p2mp LSP

IP Multicast

KEY

PIMIP mult icast

IGMP ProxyIP multicast

CoreNetwork

ContentAcquis ition

ContentManagement

Local Content Insertion

VoD Servers

Residential Trip le-Play Customers

Content Domain

Network Domain

Network Domain

Consumer Domain

MetroNetwork

IP mult icastp2mp LSP

PIM, IGMP

Snoopingp2mp LSP

p2mp LSP

IGMPIP mult icast

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IPTV: Moving Forward

Service providers getting more involvedin requirements

For example - RFC 5501Sets out requirements for Multicast Support in Virtual

Private LAN Services (e.g., IPTV), with authors from

AT&T, NTT, France telecom & CiscoStrongly hints at L3VPN multicast over p2mpRSVP-TE LSPs but only to provider edge

Role for forums Open IPTV Forum,IMS ForumDefining recommended approaches/ profiles

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Summary & Conclusions

Current IPTV network delivery statusEarly deployments

No real standardization on a single IPTV solutionThere are multiple options, and service providersneed to: a) Assess the merits and

b) Pick one

Vendors have a harder choice because differentservice providers might pick different solutions,forcing vendors to support more than one

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Q&A

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