Gigabit Ethernet

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Gigabit Ethernet

• Dr. Khalid Salah
• Information and Computer Science Department
• King Fahd University of Petroleum and Minerals
• http//www.ccse.kfupm.edu.sa/salah

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• 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?

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WW LAN MarketHubs and Switches
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Why Gigabit Ethernet?
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Primary Drivers
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Conventional Wisdom - 1994
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Conventional Wisdom now!
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Conventional Wisdom 1994
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Conventional Wisdom now!
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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

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Scalability of Ethernet
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Does the train Stop?
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ATM vs. GbE
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ATM vs. GbE
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ATM vs. GbE
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ATM vs. GbE
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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.

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Deployment 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?

• Yes!!
• Performance Study
• Jumbo Frames
• QoS
• Etc.

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Summary

• 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