Download - Mc Multicast Overview
Multicasting Overview
Benefits of Multicasting
•Scalability
•Differentiate offering
•Improve quality of broadcast
•Economic
•Build barriers to entry
•Reduced turnover/ “Stickier” sale
•Access to exclusive content
The Yahoo! broadcast Network
MULTICAST
Spri
nt
MCI
GTE
UUN
et
UNICAST
Content Out
Satellite FeedVideo
FeedAudio Feed
Analog
Content In
Yahoo! broadcast
AT&
T
Private Frame Relayand T-1 AggregationNetwork
Digital
Infrastructure with Peering & Multicasting
Satellite Feed
VideoFeed
Audio Feed
AnalogDigital
Yahoo! broadcast
Internet
MulticastAffiliates
MulticastAffiliates
SprintGTEAT&T
Cable and Wireless
WorldCom/UUNet
Level 3
Satellite Link Direct Peering Partners
CLECSILECSBroadband Providers/Affiliates
ISPs
Multicast StreamsEvents
Clients, End Users,
Enterprises
Enterprise Connection
Unicast
The Yahoo! broadcast Network
Combination of Centralized content aggregation and distribution and distributed server network
• Multi-homed– Control– Greatest reach possible– Highest quality
experience
Typical Unicast Model
Multicasting Via Tunnels
Multicasting Via Peering
Typical ISP Network
The ISP NetworkThe Terminal Server
The terminal server is the point of entry for the dial access client
• Most typically Deployed Terminal Servers:– Cisco AS 5000 Series– Ascend Max Series 2000,
4000, 6000, TNT– 3Com USR Total Control
Series with HiperArc Processor Cards
– Lucent Portmaster Series
The ISP Network: The Switch
The switch is the base point of distribution within a LAN environment
Common Switch Vendors:
• Cisco• 3 Com• Nortel
The ISP Network: The Border Router
The border Router is the point of access for content delivery
• Common Routers:– Cisco– Nortel– Ascend TNT
The ISP Network:Radius
Radius is the typical platform used for authentication & accounts is dial access networks
• Common Radius Implementations– Livingston– Radius (USA)– 3rd party
• Funk steel belted• Emerald
Multicasting Overview
October 28, 1999