Internet Core Network and Technology Evolution (Layers 0-3)

• Public

• Data services only

• Scaleable

Best Effort

Internet

Commerce

Internet

Multimedia

Internet

• Secure

• Private

• Ubiquitous

• QoS

• Multicast

• Signaling

• Resource reservation

• Multi-service platform

Core Technology Evolution

• IP-over-Coaxial (T1/T3) ? IP-over-ATM ? IP-over-SONET ? IP-over-WDM

• Today primary technology deployed is IP-over-SONET with IP-over-WDM coming

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