SUNNYVALE, Calif.--(BUSINESS WIRE)--Aerohive Networks® (NYSE:HIVE) today announced preliminary results for the first quarter of fiscal year 2015 ended March 31, 2015 as well as preliminary guidance for the second quarter of fiscal year 2015. Aerohive expects net revenue for the first quarter to be in the range of $25 million to $26 million, which is below the Company's previously stated guidance of $29 million to $31 million. On a GAAP basis, the Company expects gross margin to be between 66.0