Access/Metro Network Technologies (Layers 0-3)

Data Center/CPE

Voice

Data

Video

Multi-

Media

Web

LAN

SW

Customers

Gateway

R/S

Ethernet Frames

SONET/T1+3/FR Frame/DSL

ATM/N-ISDN/Leased Line

Gigabit Ethernet Frames (IP Metro)

Today

Emerging

(IP-over-Gethernet/WDM)

• Lower cost alternative to metro access

• QoS and reliability need to be added

• Assume IP will be the dominated service traffic type

• CLECs are primarily service provider target

• Emerging technology, not be widely deployed yet

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