Filed by Brocade Communications Systems, Inc. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14d-2 of the Securities Exchange Act of 1934, as amended Subject Company: Ruckus Wireless, Inc. (Commission File No. 001-35734)
Customer Communication

Subject: Brocade to acquire Ruckus, a pioneer in the wireless infrastructure market

We are very excited to let you know that this morning we announced our intention to acquire Ruckus, a pioneer in the wireless infrastructure market. Our combined companies will have the strategy, products, talent, and focus needed to deliver the solutions required to compete in the modern world of digital business leveraging New IP architectures. These architectures enable the network to become a platform for innovation for developing, delivering, and securing applications.

Wireless is a critical access technology and the combination of Brocade and Ruckus will create a new type of pure-play networking company, spanning from the data center to the wireless network edge. We expect the acquisition to close in the third quarter of Brocade’s 2016 fiscal year, which ends on July 30, 2016, and until that time Brocade and Ruckus will continue to serve their customers independently – business as usual.

The Brocade Open Mobility Solutions ecosystem, which includes Aruba Networks, Aerohive, and Ruckus, will remain a strategic priority. Ruckus is also dedicated to delivering multi-vendor open mobile solutions. We expect to continue to support and advance our Open Mobility Solutions partnerships to enable best-in-class, open standards-based wired/wireless solutions for our customers.

The combination will mean customers can rely on Brocade for market-leading wired and wireless LAN solutions that extend from your storage networks, to your data center, campus, and wireless edge networks. We are not planning any near-term changes to the sales and support teams you have come to rely on. Ruckus solutions will continue to be sold and supported by Ruckus’ current teams, as will Brocade solutions.

We thank you for your continued support and the opportunity to provide you with innovative solutions that meet your needs.

Sincerely,

Additional Information and Where to Find It

The exchange offer referenced in this communication has not yet commenced. This communication is for informational purposes only and is neither an offer to purchase nor a solicitation of an offer to sell shares, nor is it a substitute for any offer materials that Brocade Communications Systems, Inc. (“Brocade”) and its acquisition subsidiary will file with the U.S. Securities and Exchange Commission (“SEC”). At the time the exchange offer is commenced, Brocade and its acquisition subsidiary will file a tender offer statement on Schedule TO and may later file amendments thereto, Brocade will file a registration statement on Form S-4 and may later file amendments thereto, and Ruckus Wireless, Inc. (“Ruckus”) will file a Solicitation/Recommendation Statement on Schedule 14D-9 and may later file amendments thereto, in each case, with the SEC with respect to the exchange offer. Brocade and Ruckus may also file other documents with the SEC regarding the transaction. THE EXCHANGE OFFER MATERIALS (INCLUDING AN OFFER TO EXCHANGE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER EXCHANGE OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT WILL CONTAIN IMPORTANT INFORMATION. RUCKUS STOCKHOLDERS ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS OF RUCKUS SECURITIES SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING EXCHANGING THEIR SECURITIES. The Offer to Exchange, the related Letter of Transmittal and certain other exchange offer documents, as well as the Solicitation/Recommendation Statement, will be made available to all holders of Ruckus stock at no expense to them. The exchange offer materials and the Solicitation/Recommendation Statement will be made available for free at the SEC’s website at www.sec.gov. Additional copies may be obtained for free by contacting Brocade’s Investor Relations department at (408) 333-0233 or at IR@Brocade.com.

In addition to the Offer to Exchange, the related Letter of Transmittal and certain other exchange offer documents, as well as the Solicitation/Recommendation Statement, Brocade and Ruckus file annual, quarterly and current reports and other information with the SEC. You may read and copy any reports or other information filed by Brocade and Ruckus at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Brocade’s and Ruckus’ filings with the SEC are also available to the public from commercial document-retrieval services and at the website maintained by the SEC at http://www.sec.gov.

Forward-Looking Statements

This communication contains forward-looking statements that involve a number of risks, uncertainties and assumptions that may cause actual results to differ significantly. All statements other than statements of historical fact are statements that could be deemed forward-looking statements, including but not limited to the expected benefits and costs of the proposed transaction; management plans relating to the proposed transaction; the expected timing of the completion of the proposed transaction; statements of the plans, strategies and objectives of Brocade and Ruckus for future operations; statements concerning the expected development, performance, market share or competitive performance relating to products and services of Brocade, Ruckus or the combined company; statements about expected synergies and market opportunities; statements regarding anticipated operational and financial results; any statements of expectation or belief; and any statements of assumptions underlying any of the foregoing. Risks, uncertainties and assumptions include, but are not limited to, the ability of the parties to consummate the proposed transaction on a timely basis or at all; the satisfaction of the conditions precedent to consummation of the proposed transaction, including the condition that a majority of Ruckus’ shares be validly tendered into the exchange offer; the ability to secure regulatory approvals on the terms expected at all or in a timely manner; the failure of Brocade to obtain financing to consummate the proposed transaction; the possibility that the expected benefits of the proposed transaction may not materialize as expected; the possibility that, prior to the completion of the proposed transaction, Ruckus’ business may not perform as expected due to transaction-related uncertainty or other factors; the ability of Brocade to successfully integrate Ruckus’ operations; the ability of Brocade to achieve its plans, forecasts and other expectations with respect to Ruckus’ business after the completion of the proposed transaction and realize expected synergies; business disruptions following the proposed transaction; and other risks described in Brocade’s and Ruckus’ filings with the SEC, such as their respective Quarterly Reports on Form 10-Q and Annual Reports on Form 10-K. The forward-looking statements included in this communication are made only as of the date hereof, and Brocade and Ruckus expressly assume no obligation to update any such forward-looking statements whether as the result of new developments or otherwise.