Aruba Networks (ARUN) 10-K 2011 FY Annual report

Exhibit 32.1

CERTIFICATIONS OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION
1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

I, Dominic P. Orr, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of Aruba Networks, Inc., onForm 10-K for the period ended July 31, 2011 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in suchForm 10-K fairly presents, in all material respects, the financial condition and results of operations of Aruba Networks, Inc.

/s/  Dominic P. Orr

Dominic P. Orr

President, Chief Executive Officer and

Chairman of the Board of Directors

(Principal Executive Officer)

Date: September 27, 2011

I, Michael M. Galvin, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of Aruba Networks, Inc., onForm 10-K for the period ended July 31, 2011 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in suchForm 10-K fairly presents, in all material respects, the financial condition and results of operations of Aruba Networks, Inc.

/s/  Michael M. Galvin

Michael M. Galvin

Chief Financial Officer

(Principal Financial Officer)

Date: September 27, 2011