10 Gigabit Ethernet Market and Technology Overview David

10 Gigabit Ethernet Market and Technology Overview David O’Leary Director, Consulting Engineering

10 Gb. E Market Overview u Extension of existing Ethernet family of standards u Another 10 x jump for higher capacity u Typical Ethernet applications at higher speed u Also positioned as a MAN/WAN technology for use over dark fiber or SONET/SDH

10 Gb. E Applications: Intra-POP Connectivity Aggregation Layer IP Core 10 GE Intra. POP; SONET to WAN Optical Core 10 Gb. E Routers & Switches Customer CPE

10 Gb. E Applications: Internet Peering ISP 1 10 GE (Private) ISP 4 10 GE ISP 3 ISP 2 10 GE

10 Gb. E Applications: Server Connections Customer Cages Co-Location Facility Optical Core Layer 4 -7 Switches, Servers 10 GE Connections IP Core Direct Attachment

10 Gb. E Applications: MAN or WAN SONET or dark fiber 10 Gb. E

10 Gb. E Technology Overview u Retention of 802. 3 MAC and frame format 64 – 1518 Byte frames v Jumbo-framesnot included in standard v u No half duplex mode v u different from other versions of Ethernet No CSMA/CD on full duplex v Simultaneous sending and receiving at all times Works with 802. 1 Q, 802. 3 ad, etc. u Fiber interfaces only – no copper versions u LAN PHY – 10 Gb/s u WAN PHY – 9. 29 Gb/s (SONET framing overhead) u

10 Gb. E Terms and Acronyms u u u u PHY – PHYsical. Layer Device PMD – Physical Media Dependent WIS – WAN Interface Sublayer v SONET rate and framing adaption WWDM – Wideband Wave Division Multiplexing XGMII – 10 Gb Media Independent Interface XAUI - 10 Gb Attachment Unit Interface v XENPAK electrical interface v Replace or extend XGMII interface (lower cost) XENPAK v consortium agreement for interoperability of 10 Gb transceiver modules v Keyed Floating Duplex SC optical connector v PHY and PMD independent

10 Gb. E Media Types 10 GBase-SR – up to 300 m over dark fiber u 10 GBase-SW – up to 300 m over SONET u v Both 850 nm, multimode fiber 10 GBase-LR – 2 m-10 km over dark fiber u 10 GBase-LW – 2 m-10 km over SONET u v Both 1310 nm, single mode fiber 10 Base-ER – 2 m – 40 km over dark fiber u 10 Base-EW – 2 m – 40 km over SONET u v u Both 1550 nm, single mode fiber 10 GBase-LX 4 – 4 parallel wavelengths over single mult - or single-mode fiber pair at 1310 nm

802. 3 ae Architectural Components Full Duplex 802. 3 Media Access Control (MAC) 10 Gb Media Independent Interface (XGMII) or 10 Gb Attachment Unit Interface (XAUI) WWDM LAN PHY 8 B/10 B WWDM PDM 1310 nm Serial WAN PHY 64 B/66 B + WIS Serial LAN PHY 64 B/66 B Serial PMD 850 nm Serial PMD 1310 nm 1550 nm Serial PMD 850 nm From: 10 GE Alliance Technology Overview White paper Serial PMD 1310 nm 1550 nm

Standardization Status and Schedule IEEE 802. 3 ae Working Group u Work began in 1999 u Project approved in January, 2000 u Currently at “Sponsor ballot” status u See IEEE web page for gory process details v http: //grouper. ieee. org/groups/802/3/rules/ v Draft 4. 3 is most current u Continuing to resolve various technical and editorial comments u v u Significant changes unlikely at this point Final Standard quite likely in 2002 v th ratification Tentative June 13

Interoperability Status u May ’ 02 Net. World + Interopnetwork test v 13 companies participated with 19 devices v Variety of switches, test equipment, fiber and components were included in the network v 4 of 7 Media types included v Chip level interconnect (XAUI) also tested http: //www. 10 gea. org/10 gea_pr_050702. pdf

Summary and Conclusions u 10 Gigabit Ethernet is viable now u Standard is basically complete u Products are shipping v Switch and router interfaces v Test equipment u As with all new technology: v Test for interoperability, check interoperability test results (UNH IOL, Interop, etc. ) v Test for performance (interface and system)

Reference sites http: //grouper. ieee. org/groups/802/3/ae/index. html (standard status, meeting minutes) http: //www. 10 gea. org http: //www. ethermanage. com/ethernet/10 gig. 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/10 Gig. E/