Ethernet Last MileTopology Considerations

Chris Di MinicoDirector Network Systems TechnologyCDT Corporation

LECLocal Exchange Carrier

IECInter Exchange

Carrier

RT

DistributionToll Trunk

LATA Boundary

InterlataInterofficeLoop

TrunkFeeder

Switch

Network Boundaries

Last mile,First Mile

Customer Premise

Home

Customer Premise

Internet DataCenter

Local Loop-last mile

Central Office- Distribution Node

BackboneCentral Office- Distribution Node

Local Loop-last mile

Customer Premise

Internet DataCenter

Current Infrastructure

HomeSOHO

HomeSOHO

Access Technologies Network Devices

Service•Voice/Data•Management•Security

Customer Premise

Internet DataCenter

Local Loop-last mile

Central Office- Distribution Node

BackboneCentral Office- Distribution Node

Local Loop-last mile

Customer Premise

Internet DataCenter

Voice Application Infrastructure•Voice over Internet Protocol •Voice over ATM•Voice over HDLC•Voice Compression over (T1/E1, ISDN)

•Multi-protocol Conversions–T1/E1 to ATM, etc..

Voice Application Infrastructure

HomeSOHO

HomeSOHO

Customer Premise

Internet DataCenter

Local Loop-last mile

Central Office- Distribution Node

BackboneCentral Office- Distribution Node

Local Loop-last mile

Customer Premise

Internet DataCenter

Voice/DATA Infrastructure•Voice over Internet Protocol (Ethernet)

Voice/DATA Application Infrastructure

HomeSOHO

HomeSOHO

Customer Premise

Internet DataCenter

Service ProviderLocal Loop•CustomerLease

Service provider - Distribution Node

Service ProviderBackbone•Customerlease

Customer Premise

Internet DataCenter

DATA/Voice Infrastructure (Ethernet)

•Voice over Internet Protocol (Ethernet)•eliminates central office protocol conversions•customer bandwidth on demand – (10 Mb/s,100 Mb/s, 1000 Mb/s,10 Gb/s)

Service provider - Distribution Node

Service ProviderLocal Loop•CustomerLease

DATA/Voice Convergence Infrastructure (IP - Ethernet) -

HomeSOHO

HomeSOHO

•Reengineering of the telecommunication infrastructure occurring in traditional and specialized environments.

•Each distribution environment has unique requirementsof form, fit, and function.

•The Internet Cabling Distribution environments

– Internet data centers– Central office– Multi-tenant Buildings– Small and Home Office

Internet Cabling Distribution Environments

• Network infrastructure required to drive web hosted Internet applications.

• Internet data center space is growing in millions of square feet each year.

Internet Data Centers

MultiMulti--Tenant Services Tenant Services -- LAN InfrastructureCustomer Premise Cabling - TIA/EIA-568-A

HC

HCTO

ICMC

HC

HC

HC

HCTO

IC

HC

HC

LAN TPTO

Interbuilding backbone2000 m

Intrabuilding backbone500 m

Horizontal Cable100 m

Voice and Data - In-building bundled Services•Infrastructure Cabling •local and long distance phone•Internet access•WAN and LAN connectivity

Service Provider Distribution NodeService Provider Distribution Node-- Central OfficeCentral Office

1985 1990 1995 2000

10 Mb/s

100 Mb/s

1 Gb/s

10 Gb/s

2005

10 Mb/s Ethernet

100 Mb/s Ethernet

1 Gb/s Ethernet

10 Gb/s Ethernet (LAN)

DS3 (44.736 Mb/s)

OC- 3 (155.52 Mb/s)

DS1 (1.544 Mb/s)

OC- 48 (2.48832 Gb/s)

OC- 12 (622.08 Mb/s)

OC- 192 ( 9.58464 Gb/s) (WAN)Convergence Data Rate

10 Gb/s Convergence Data Rate -LAN/WAN/SAN

SONET Infrastructure

2.5 Gb/s InfiniBand

InfiniBand (10 Gb/s) (SAN)

Last Mile Cabling Performance

• Transmission performance (distances)– twisted pair copper (taps)– coax– fiber– hybrid

Installed CablingInstalled Cabling Issues