Exhibit 99.1

ARUBA NETWORKS REPORTS RECORD FISCAL THIRD QUARTER

2012 FINANCIAL RESULTS

SUNNYVALE, Calif., May 17, 2012 – Aruba Networks, Inc. (NASDAQ: ARUN) today released financial results for its fiscal third quarter ended April 30, 2012.

Revenue for Q3’12 was $131.9 million, an increase of 25 percent from the $105.8 million reported in Q3’11. GAAP net income for Q3’12 was $6.0 million, or $0.05 per share, compared with GAAP net income of $3.2 million, or $0.03 per share, for the same period in the previous year.

Non-GAAP net income for Q3’12 was $19.4 million, or $0.16 per share, compared with non-GAAP net income of $18.8 million, or $0.16 per share, in Q3’11. A reconciliation between GAAP and non-GAAP information is contained in the tables below.

“We are pleased with our solid third quarter results as we grew revenue 25 percent year-over-year to the highest level in our history,” said Dominic Orr, president and chief executive officer. “Our differentiated mobile-centric approach to the access network continues to resonate with both new and existing customers as the global proliferation of mobile devices and the BYOD trend fundamentally change how users securely connect to their enterprise resources. The recent customer wins we made this quarter with our MOVE architecture demonstrate the power of our platform to expand within our current customer base and win new accounts.”

“Gross margins were above our guidance range and we continued to show leverage in our operating expenses,” said Michael Galvin, Aruba’s chief financial officer. “Total cash and short-term investments increased more than $40 million, including record cash flow from operations of $28 million.”

Recent Highlights

Conference Call Information

Aruba will host a conference call for analysts and investors to discuss its fiscal third quarter results today at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time). Open to the public, investors may access the call by dialing +1-480-629-9760. A live webcast of the conference call will also be accessible from the “Investor Relations” section of the company’s website at www.arubanetworks.com. Following the webcast, an archived version will be available on the website for twelve months. To hear the replay, parties in the United States and Canada should call 1-800-406-7325 and enter passcode 4537751. International parties can access the replay at +1-303-590-3030 and should enter passcode 4537751.

Forward-Looking Statements

This press release contains forward-looking statements, including statements about our expectation that employees will continue to bring their own devices to work, resulting in increased demand for our enterprise mobility solutions, and expansion of our product portfolio.

These forward-looking statements involve risks and uncertainties, as well as assumptions which, if they do not fully materialize or prove incorrect, could cause Aruba’s results to differ materially from those expressed or implied by such forward-looking statements. The risks and uncertainties that could cause our results to differ materially from those expressed or implied by such forward-looking statements include: (1) business and economic conditions and growth trends in the networking industry, our vertical markets and various geographic regions; and (2) changes in overall information technology spending; as well as those risks and uncertainties included under the captions “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” in Aruba’s Quarterly Report on Form 10-Q for the fiscal quarter ended January 31, 2012, which was filed with the SEC on March 8, 2012, and is available on Aruba’s investor relations Web site at www.arubanetworks.com and on the SEC Web site at www.sec.gov. All forward-looking statements in this press release are based on information available to us as of the date hereof, and we assume no obligation to update these forward-looking statements.

Non-GAAP Financial Measures

In addition to disclosing financial measures prepared in accordance with Generally Accepted Accounting Principles (GAAP), this press release and the accompanying tables contain the following non-GAAP financial measures: non-GAAP net income and non-GAAP earnings per share (EPS). The presentation of this financial information is not intended to be considered in isolation or as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP.

Non-GAAP net income and EPS. Aruba defines non-GAAP net income as net income plus stock-based expenses and related payroll taxes, amortization of acquired intangible assets and other acquisition related expenses, and the change in the valuation of the contingent rights liability, less the related tax effects. Aruba defines non-GAAP EPS as non-GAAP net income divided by the weighted average diluted shares outstanding. Aruba’s management regularly uses these non-GAAP financial measures to understand and manage its business and believes that these non-GAAP financial measures provide meaningful supplemental information regarding the company’s performance by excluding certain expenses that may not be indicative of Aruba’s “recurring operating results,” meaning its operating performance excluding not only stock-based expenses and related payroll taxes, but also discrete charges that are infrequent in nature. Further, Aruba’s management excludes from non-GAAP net income the tax effects of these non-GAAP financial measures, as without excluding these tax effects, investors would only see the gross effect that excluding these expenses had on the Company’s operating results. Because of varying available valuation methodologies, subjective assumptions and the variety of award types that companies can use, Aruba’s management believes that providing non-GAAP financial measures that exclude stock-based expenses allows investors to compare these results with those of other companies, as well as providing management with an important tool for financial and operational decision making and for evaluating the company’s operating results over different periods of time. Similarly, by excluding amortization expense of acquired intangible assets and other acquisition related expenses, and the change in the valuation of the contingent rights liability, less the related tax effects, Aruba’s management believes that investors can better understand and measure the company’s recurring operating results.

There are a number of limitations related to the use of non-GAAP net income and EPS versus net income and EPS calculated in accordance with GAAP. First, these non-GAAP financial measures exclude some costs, namely stock-based expenses and related payroll taxes, that are recurring. Stock-based expenses and related payroll taxes have been and will continue to be for the foreseeable future a significant recurring expense in Aruba’s business. Second, stock-based awards are an important part of Aruba’s employees’ compensation and impacts their performance. Third, the components of the costs that Aruba excludes in its calculation of non-GAAP net income may differ from the components that its peer companies exclude when they report their results of operations. Management compensates for these limitations by providing specific information regarding the GAAP amounts excluded from these non-GAAP financial measures and evaluates these non-GAAP financial measures together with their most directly comparable financial measures calculated in accordance with GAAP. The accompanying tables provide reconciliations between these financial measures and their most directly comparable GAAP equivalents.

A copy of this press release can be found on the investor relations page of Aruba Networks’ Web site at www.arubanetworks.com.

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About Aruba Networks, Inc.

Aruba Networks is a leading provider of next-generation network access solutions for the mobile enterprise. The company’s Mobile Virtual Enterprise (MOVE) architecture unifies wired and wireless network infrastructures into one seamless access solution for corporate headquarters, mobile business professionals, remote workers and guests. This unified approach to access networks dramatically improves productivity and lowers capital and operational costs.

Listed on the NASDAQ and Russell 2000^® Index, Aruba is based in Sunnyvale, California, and has operations throughout the Americas, Europe, Middle East, and Asia Pacific regions. To learn more, visit Aruba at http://www.arubanetworks.com. For real-time news updates follow Aruba on Twitter and Facebook.

^© 2012 Aruba Networks, Inc. Aruba Networks’ trademarks include the design mark for AirWave, Aruba Networks^®, Aruba Wireless Networks^®, the registered Aruba the Mobile Edge Company logo, the registered AirWave logo, Aruba Mobility Management System^®, Mobile Edge Architecture^®, People Move. Networks Must Follow^®, RFProtect^®, Green Island^®. All rights reserved. All other trademarks are the property of their respective owners. 

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Aruba Networks, Inc.

Consolidated Balance Sheets

(In thousands, except per share data)

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Aruba Networks, Inc.

Consolidated Statements of Operations

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Aruba Networks, Inc.

Consolidated Statements of Operations

(GAAP to Non-GAAP Reconciliation)

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* For the nine months ended April 30, 2012, dilutive shares have been excluded from calculating GAAP and Non-GAAP net income (loss) per share to provide comparability between GAAP and non-GAAP results. Including the effects of dilutive shares, the Non-GAAP net income per share would have been $0.46.

Aruba Networks, Inc.

Consolidated Statements of Operations

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Aruba Networks, Inc.

Consolidated Statements of Cash Flows

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