10 Gigabit Ethernet Market and Technology Overview

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10 Gigabit EthernetMarket and Technology
Overview
David OLeary Director, Consulting Engineering
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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

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10 GbE Applications Intra-POP Connectivity
Aggregation Layer
Customer CPE
IP Core
Routers Switches
10GE Intra-POP SONET to WAN
Optical Core
10 GbE
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10 GbE Applications Internet Peering
ISP 1
10 GE (Private)
ISP 4
ISP 2
10 GE
10 GE
10 GE
10 GE
ISP 3
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10 GbE Applications Server Connections
Customer Cages
Co-Location Facility
Layer 4-7 Switches, Servers
Optical Core
10 GE Connections
IP Core
Direct Attachment
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10 GbE Applications MAN or WAN
SONET or dark fiber
10 GbE
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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)

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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

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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

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802.3ae Architectural Components
Full Duplex 802.3 Media Access Control (MAC)
10Gb Media Independent Interface (XGMII) or
10Gb Attachment Unit Interface (XAUI)
Serial WAN PHY 64B/66B WIS
Serial LAN PHY 64B/66B
WWDM LAN PHY 8B/10B
Serial PMD 850nm
Serial PMD 1310nm
Serial PMD 1550nm
Serial PMD 850nm
Serial PMD 1550nm
Serial PMD 1310nm
WWDM PDM 1310nm
From 10GE Alliance Technology Overview White
paper
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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

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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

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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)

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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/