This IDC update reviews 3Q08 end-user revenue for Layer 2 and Layer 3 Ethernet switching and shows the quarter-over-quarter (QoQ) and year-over-year (YoY) changes. The information in this update stems from IDC's Worldwide Ethernet Switch QView service, which delivers a pivot table of end-user revenue, manufacturer revenue, and port shipments by vendor, layer, speed, form factor, power over Ethernet (PoE) capabilities, and average pricing seven weeks after the close of the calendar quarter. For more information, contact your IDC representative.