Energy Efficient Ethernet.pdf

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Energy Efficient Ethernet

IEEE 802.3az May 2008 Interim Meeting 1 Energy Efficient Ethernet Switching Perspective Dan Dove ProCurve Networking by HP IEEE 802.3az May 2008 Interim Meeting 2 Supporters Thanks to the following for review, feedback, and support: Brad Booth – AMCC Bill Woodruff – Aquantia David Koenen – HP Rob Hays – Intel Joseph Chou – Realtek George Zimmerman– Solarflare Dimitry Taich – Teranetics Mandeep Chadha – Vitesse IEEE 802.3az May 2008 Interim Meeting 3 Switch Perspective ? PHY Power Savings is important ? MAC Infrastructure Savings also important ? Determine Key control points ? Determine Key control parameters ? Determine Means for communicating control parameters IEEE 802.3az May 2008 Interim Meeting 4 Switch Infrastructure (example) Fabric (20W) System Processor Memory (10W) System Power Supplies Fans Fans Fans (20W) System Power Supplies System Power Supplies (60W) PHY Power is a substantial percentage of the overall switch infrastructure power consumption but not sufficient to achieve desired energy savings 10GBASE-T dramatically shifts the percentage of power to PHY but for many customers fiber or 10/100 or 1000BASE-T will be used. EEE should be useful not just for reducing PHY power, but for reducing system power Network Switching Engine PHY PHY PHY PHY PHY PHY PHY PHY PHY Memory MAC MAC MAC MAC MAC MAC MAC MAC MAC Hotswap Power Supplies Mgmt Processor Network Switching Engine PHY PHY PHY PHY PHY PHY PHY PHY PHY Memory MAC MAC MAC MAC MAC MAC MAC MAC MAC Hotswap Power Supplies Mgmt Processor Blade LEDs Network Switching Engine PHY Memory MAC Hotswap Power Supplies Mgmt Processor Network Switching Engine PHY Memory MAC Hotswap Power Supplies Mgmt rocessor Blade LEDs Network Switching Engine PHY Memory MAC Hotswap Power Supplies Mgmt Processor Network Switching Engine (20W) PHY PHY PHY PHY PHY PHY PHY PHY PHY Memory (2W) MAC MAC MAC MAC MAC MAC MAC MAC MAC Hot wap DC/DC (8W) gmt Processor (5W) Blade LEDs Approximate PHY power Copper:

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