This report examines the Ethernet switch market for 2Q07. Market shares for a wide range of Ethernet switch vendors are provided, based both on port shipments and manufacturers' revenue for the quarter. In addition, port shipments and manufacturers' revenue are forecasted for the five quarters subsequent to 2Q07. The data is highly segmented, both by OSI Layer (L2, L3, and L4-7) and equipment configuration (Fixed vs. Modular), as well as by speed (Fast Ethernet, Gigabit Ethernet, 10 Gigabit Ethernet). Cross segmentation is also provided for greater granularity (for example: L2 Fixed Fast Ethernet).