This IDC update reviews 1Q08 revenue for Layer 2 and Layer 3 LAN switching and shows the quarter-over-quarter (QoQ) and year-over-year (YoY) changes. The information in this update stems from IDC's Worldwide LAN 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.