Gigabit EthernetGigabit Ethernet

Dr. Khalid SalahDr. Khalid SalahInformation and Computer Science DepartmentInformation and Computer Science Department

King Fahd University of Petroleum and MineralsKing Fahd University of Petroleum and Mineralshttp://www.ccse.kfupm.edu.sa/~salahhttp://www.ccse.kfupm.edu.sa/~salah

October 2001 K. Salah2

Why GbE? ATM vs. GbE Conventional Wisdom? Scalability of GbE? Is 10 GbE just the beginning? ATM vs. GbE Deployment of 10 GbE

80/20 rule!! Any interesting research ideas?

October 2001 K. Salah3

WW LAN MarketWW LAN MarketHubs and SwitchesHubs and Switches

October 2001 K. Salah4

Why Gigabit Ethernet?Why Gigabit Ethernet?

October 2001 K. Salah5

Primary DriversPrimary Drivers

October 2001 K. Salah6

Conventional Wisdom - 1994Conventional Wisdom - 1994

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Conventional Wisdom – now!Conventional Wisdom – now!

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Conventional Wisdom – 1994 Conventional Wisdom – 1994

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Conventional Wisdom – now!Conventional Wisdom – now!

October 2001 K. Salah10

Is GbE Ethernet all over again?Is GbE Ethernet all over again?

Yes!!! A Thousand Times Yes. Same frames Same Knowledge Same Infrastructure Multiple vendor support Low cost, interoperable Simple, easy migration Same network management philosophy Very few new things to learn Just the next step in Ethernet

October 2001 K. Salah11

Scalability of EthernetScalability of Ethernet

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Does the train Stop?Does the train Stop?

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ATM vs. GbEATM vs. GbE

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ATM vs. GbEATM vs. GbE

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ATM vs. GbEATM vs. GbE

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ATM vs. GbEATM vs. GbE

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How about QoS?How about QoS?

ATM wins, but wait! You need ATM all the way to the desktop Most of LAN traffic is IP With 1GbE PC-to-Switch, you have 2G bps BW

to run any delay sensitive traffic. MPLS, RSVP, and 802.1p are narrowing the

QoS gap.

October 2001 K. Salah18

Deployment of 10 GbEDeployment of 10 GbE

LAN: both service provider and enterprise

MAN: both dark fiber and DWDM

WAN: Attachment to WAN access equipment at

edge of OC- 192 infrastructure

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Research Ideas?Research Ideas?

Yes!! Performance Study Jumbo Frames QoS Etc.

October 2001 K. Salah25

SummarySummary

GbE is the most important new technology GbE is very scalable 10 GbE pt-to-pt will be 40 km over SMF GbE is a switching technology, not a

shared media. GbE is winning (won) the war over ATM