10 Gigabit Ethernet

Market and Technology Overview

David O’LearyDirector, Consulting Engineering

10 GbE Market Overview Extension of existing Ethernet family

of standards Another 10x jump for higher capacity

Typical Ethernet applications at higher speed

Also positioned as a MAN/WAN technology for use over dark fiber or SONET/SDH

10 GbE Applications: Intra-POP Connectivity

10GE Intra-POP;

SONET to WAN

Routers &Switches

Aggregation Layer

OpticalCore

Customer CPE

IP Core

10 GbE

10 GbE Applications: Internet Peering

ISP 1

ISP 4

ISP 3

ISP 2

10 GE10 GE

10 G

E10 G

E

10 GE (Private)

10 GbE Applications: Server Connections

Co-Location Facility

OpticalCore

Layer 4-7 Switches, Servers

DirectAttachment

Customer Cages

IP Core

10 GEConnections

10 GbE Applications: MAN or WAN

SONET or dark fiber

10 GbE

10 GbE Technology Overview

Retention of 802.3 MAC and frame format 64 – 1518 Byte frames Jumbo-frames not included in standard

No half duplex mode different from other versions of Ethernet

No CSMA/CD on full duplex Simultaneous sending and receiving at all times

Works with 802.1Q, 802.3ad, etc. Fiber interfaces only – no copper versions LAN PHY – 10Gb/s WAN PHY – 9.29Gb/s (SONET framing

overhead)

10GbE Terms and Acronyms PHY – PHYsical Layer Device PMD – Physical Media Dependent WIS – WAN Interface Sublayer

SONET rate and framing adaption WWDM – Wideband Wave Division Multiplexing XGMII – 10Gb Media Independent Interface XAUI - 10Gb Attachment Unit Interface

XENPAK electrical interface Replace or extend XGMII interface (lower cost)

XENPAK consortium agreement for interoperability of 10Gb

transceiver modules Keyed Floating Duplex SC optical connector PHY and PMD independent

10GbE Media Types 10GBase-SR – up to 300m over dark fiber 10GBase-SW – up to 300m over SONET

Both 850nm, multimode fiber 10GBase-LR – 2m-10km over dark fiber 10GBase-LW – 2m-10km over SONET

Both 1310nm, single mode fiber 10Base-ER – 2m – 40km over dark fiber 10Base-EW – 2m – 40km over SONET

Both 1550nm, single mode fiber 10GBase-LX4 – 4 parallel wavelengths over

single multi- or single-mode fiber pair at 1310nm

802.3ae Architectural Components

WWDM PDM1310nm

WWDM LAN PHY8B/10B

Serial LAN PHY 64B/66B

Serial PMD850nm

Serial PMD1310nm

Serial PMD1550nm

Serial PMD850nm

Serial PMD1310nm

Serial PMD1550nm

Serial WAN PHY64B/66B + WIS

10Gb Media Independent Interface (XGMII) or 10Gb Attachment Unit Interface (XAUI)

Full Duplex 802.3 Media Access Control (MAC)

From: 10GE Alliance Technology Overview White paper

Standardization Status and Schedule

IEEE 802.3ae Working Group Work began in 1999 Project approved in January, 2000 Currently at “Sponsor ballot” status

See IEEE web page for gory process details http://grouper.ieee.org/groups/802/3/rules/

Draft 4.3 is most current Continuing to resolve various technical and

editorial comments Significant changes unlikely at this point

Final Standard quite likely in 2002 Tentative June 13th ratification

Interoperability Status

May ’02 NetWorld+ Interop network test

13 companies participated with 19 devices

Variety of switches, test equipment, fiber and components were included in the network

4 of 7 Media types included

Chip level interconnect (XAUI) also tested

http://www.10gea.org/10gea_pr_050702.pdf

Summary and Conclusions

10 Gigabit Ethernet is viable now Standard is basically complete Products are shipping

Switch and router interfaces Test equipment

As with all new technology: Test for interoperability, check

interoperability test results (UNH IOL, Interop, etc.)

Test for performance (interface and system)

Reference sites

http://grouper.ieee.org/groups/802/3/ae/index.html(standard status, meeting minutes)

http://www.10gea.org

http://www.ethermanage.com/ethernet/10gig.html

http://www.iol.unh.edu/training/index.html(good technical tutorials on MAC, fault signaling, etc.)

http://www.xenpak.org/

http://www.sdsc.edu/10GigE/