Transcript
Broadband Network Architecture Options for the Delivery of IPTV
Curtis Sherbo, PEng TELECOM@NAB2007 April 17, 2007
Agenda
Background
AccessNetworkArchitectureOptions Multicast&SubscriberOptions Summary&NextSteps
Redback Networks and its flagship product, the SmartEdge Multi-Service Edge Router support more than 50 million of today\'s Broadband subscribers
DSL Forum is a consortium of approximately 200 leading industry players covering telecommunications, equipment, computing, networking and service provider companies
TR-101MigrationtoEthernetBasedDSL Aggregation
ASP/Service
Node
A10-ASP
Live
Media L2TP
NSP1 L2TS
A10-NSP
IPNetwork User1
NSP2 IP-QoS A10-NSP IP BB Network Gateway Ethernet Aggregation Access Node (DSLAM) MDF Access Loop NID CPE
On-Demand Media ASP1 A10-ASP IP-QoS Operator Headend RegionalBroadband Network Operator Access NetworkAccessNetwork V U TV
via
STB
CustomerPremNet User2T
AggregationNetwork
Source:DSLForum2007
TR-101 Components
NSP Network
NSP-1
IP, ATM or Ethernet
NSP-2 IP
ASP Network
Broadband Network Gateway
PPPoE and/or IP/DHCP services
Bandwidth/QoS policy enforcement
Security
Multicast control
Operation Administration Maintenance (OAM)
EAN BNG
Ethernet Aggregation Node
Ethernet/VLAN aggregation
QoS
Multicast / IGMP
Potential for separate multicast content injection point
OAM
Resiliency
AN
Access Node
ATM-Ethernet interworking
VLAN handling
Security
QoS
Multicast/IGMP
OAM
PC
RG
TV Set-Top
Residential Gateway
xDSL Access Device
Network Address
Translation (NAT)
QoS
Multicast/IGMP
OAM
Agenda
Background
AccessNetworkArchitectureOptions
Multicast&SubscriberOptions Summary&NextSteps
ConsolidatedEdge Architecture
Home/ Access BroadbandIPEdge IPCore ServicesBusiness
PC
Internet
IntegratedAggregation,EdgeRouting,BRAS
TV RG DSLAM
Data
Set-Top
BNG Networks
MPLS VPN
PC Wi-Fi/WiMAXTV RG
Set-Top
PC
IPTV
TV RG
Network
CableHE
Set-Top
in le ervice ontrol oint
S
ing
leS
erviceC
ontrolP
oint
irect onnect o el VoIP&
D
irectC
onnectM
od
el
PC
S
ig
nificantOp
erationalS
aving
s i nificant erational avin s PSTN
eal-timeserviceintelli ence,sucas
R
eal-timeserviceintellig
ence,such
as
varia le an wi tcontrol, olicy
manag
ement,statisticsg
ath
ering
p
erement,statistics erin er 3G/Wi-Fi/
TV RG variab
leb
and
wid
th
control,p
olicy
mana at
Set-Top WiMax
su scri er
sub
scrib
er
Agenda
Background
AccessNetworkArchitectureOptions
Multicast&SubscriberOptions
Summary&NextSteps
MulticastReplicationinthe Access Network
MulticastVLAN PC
NoSubscriberTraffic OnlyIGMPTrafficand MulticastStream AN RG Set-Top TV
NSPNetwork
NSP-1 NSP-2 IP,ATMor Ethernet BNG EAN AN AN RG Set-Top TV
AN RG Set-Top TV
IP RG TV
AN Set-Top
ASPNetwork RG TV
BN
G:
IGMP
Per
EANorANReplication
Mu
ltipleMulticastVLANs
Immedia
teLea
veFunctionality Se
t8021ppriorit
ybitsonMCtr
affic Persubscribermulticaststatistics EANSnooping/Proxy
ANReplication
Immediate
Leave
Functionality
Enforce
QoS in8021p A :
R
G 8021pQoS,setIGMPprio
rity R strictMCTrafficfromSubsc ibers RGPr xy eceiverReplication S pportIGMPonPPPoESession, IPoEEnc psul tion,BothSimultan usly ourceIGMPw h0000 EAN AN AN RG RG Set-Top Set-Top Set-Top TV TV
IGMP Control Traffic Option 1
PPPoE Session AN BNG
RG
“IPoE Session”
Source 0000
IGMP Join & Leave
Multicast Data
PPPoE Session for Subscriber Internet Traffic
IPoE Encapsulation for Multicast Traffic
No DHCP used since Subscriber has IP-address from PPPoE IPCP
IGMP Traffic on Both PPPoE and IPoE Encapsulation
BNG receives individual subscriber IGMP Joins/Leaves
IGMP Control Traffic Option 2
PPPoE Session
AN
BNG
RG
“IPoE Session”
Source 0000
IGMP Join & Leave
Multicast Data
PPPoE Session for Subscriber Internet Traffic
IPoE Encapsulation for Multicast Traffic
No DHCP used since Subscriber has IP-address from PPPoE IPCP
IGMP Traffic ONLY on the IPoE Encapsulation
BNG may or may not see individual subscriber IGMP Joins/Leaves, depending on the IGMP implementation on the Access Node
Service Intelligence in Option 1
BNG
RG
AN
PPPoE,
Subscriber sessions
Subscriber VLAN
Options: BNG
1) 1 VLAN per Subscriber ?
IPoE,
Multicast Service VLAN
2) Shared Subscriber VLAN ? 3) 1 or more Multicast VLANs
Multicast VLAN
IGMP Termination
BNG will receive IPTV IGMP on MC-VLAN, to be used for Forwarding Decision
BNG will always receive Subscriber IGMP traffic on PPPoE session
BNG can perform Subscriber Rate Control Based on IGMP join/leaves
BNG can perform Subscriber Multicast statistic
BNG can perform Subscriber Multicast troubleshooting
BNG can differentiate Subscriber IGMP traffic, and use IPTV range for Informational purpose, but use ”public” range for Subscriber specific forwarding decision over the PPPoE session
Service Intelligence in Option 2
BNG
PPPoE, RG AN Subscriber sessions
Subscriber VLAN
BNG
Options:
IPoE,
Multicast Service VLAN
1) 1 VLAN per Subscriber ? 2) Shared Subscriber VLAN ?
Multicast VLAN
3) 1 or more Multicast VLANs
IGMP Termination
BNG will receive IPTV IGMP on MC-VLAN, to be used for Forwarding Decision
BNG can match IGMP packet MAC-address with Subscriber PPPoE MAC-address
If AN is in Transparent Snooping Mode
BNG will receive all Subscriber IGMP Traffic
BNG can perform Subscriber Rate Control Based on IGMP join/leaves
BNG can perform Subscriber Multicast statistic and troubleshooting
If AN is in Snoop & Aggregate or Proxy Mode
BNG will NOT receive all Subscriber IGMP Traffic
BNG can Not perform any Subscriber Multicast functionality
Agenda
Background AccessNetworkArchitectureOptions Multicast&SubscriberOptions
Summary&NextSteps
Summary
tr
rv
ice
Se
Me
tro
r i ri
Se
rv
ices
Home Access
r ti
Agg
rega
tion Edge
RT
PolicyManagement
Server
Internet
DSLAM
FTTx
SmartEdge
SinglePointtoControlallBWto
theHome(Unicast andMulticast)
Multi-ServiceEdgeRouter IPTVNetwork
SinglePointforPolicyManagement attheEdge
ServicePrioritywithnoOSS SingleService VoIP signalingorintegration
ControlPoint
DSLAMautoadjustmentofsync rate
PolicyManagementAPI&Radiusintegrationfor
applicationtonetworkpolicyenforcement
WT-146 IP Sessions
Specification of a Subscriber Session based on DHCP
instead of PPP
WT-147 Layer 2 Control Mechanism (ANCP)
Mechanism for exchange of information and/or control between Access Nodes and Broadband Network Gateways
L2C usage and functionality being specified in DSLF
ANCP Protocol being defined in IETF
WT-144 Multi-Service Architecture Framework & Requirements (TR-58bis)
Business Requirements for WT-145 WT-145 TR-59/TR-101bis
Evolution of TR-101 to meet new business requirements
Redback Networks Inc
wwwredbackcom
TELECOM Supplier Exhibits N231/233
DSL Forum
wwwdslforumorg
csherbo@redbackcom
Curtis Sherbo TR-101 Migration to Ethernet Based DSL Aggregation
http://wwwdslforumorg/techwork/tr/TR-101pdf
Driving Quality IPTV Deployments
Laurie Gonzalez, Marketing Director, DSL Forum
Gavin Young, Technical Committee Chair, DSL Forum
Architecture Evolution Overview
Thank You