UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549

~~SECURITIES~~FORM ~~AND EXCHANGE COMMISSION~~8-K

~~Washington,~~CURRENT ~~D. C. 20549~~REPORT

~~FORM~~Pursuant ~~8-K~~to Section 13 or 15(d) of the Securities Exchange Act of 1934

~~CURRENT~~Date ~~REPORT~~of Report: August 25, 2006 (Date of earliest event reported)

~~Pursuant~~McDATA ~~to Section 13 or~~Corporation 15(~~d) of~~Exact ~~the~~name ~~Securities~~of ~~Exchange~~registrant as ~~Act~~specified ofin ~~1934~~its charter)

Date of Report: June 7, 2006

Delaware	000-31257	84-1421844
(State or other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

11802 Ridge Parkway, Broomfield, Colorado 80021 (~~Date~~Address of ~~earliest~~principal executive ~~event~~offices, ~~reported~~including Zip Code)

~~McDATA~~(720) 558-8000 (Registrant’s ~~Corporation~~telephone number, including area code)

~~(Exact~~Check ~~name~~the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant asunder ~~specified~~any inof ~~its~~the ~~charter~~following provisions (see General Instruction A.2. below):

Delaware	000-31257	84-1421844
(State or other	(Commission File	(IRS Employer
Jurisdiction of	Number)	Identification No.)
Incorporation)

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

~~11802~~o ~~Ridge~~Soliciting ~~Parkway,~~material ~~Crescent,~~pursuant ~~Broomfield,~~to ~~Colorado~~Rule ~~80021~~14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(~~Address~~b) ofunder ~~principal~~the ~~executive~~Exchange ~~offices,~~Act ~~including~~(17 ~~Zip~~CFR ~~Code~~240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(~~720~~c) ~~558~~ under the Exchange Act (17 CFR 240.13e-~~8000~~4(c))

~~(Registrant’s~~ITEM ~~telephone~~2.02 ~~number,~~— ~~including~~Results ~~area~~of ~~code)~~Operations and Financial Condition

~~Check~~On ~~the~~August ~~appropriate~~24, ~~box~~2006, ~~below~~McDATA ifCorporation ~~the~~(“McDATA”) hosted ~~Form~~its ~~8-K~~Q2 ~~filing~~2006 isearnings ~~intended~~conference ~~to simultaneously~~call ~~satisfy~~and webcast (the ~~filing~~“Call”). ~~obligation~~A ofcopy of the ~~registrant~~earnings ~~under~~press ~~any~~release is furnished as Exhibit 99.1. A copy of the prepared ~~following~~script ~~provisions~~for ~~(see~~the ~~General~~Call ~~Instruction~~is Afurnished as Exhibit 99.2. ~~below):~~

~~o Written~~The ~~communications~~information ~~pursuant~~in this Item 2.02 is furnished and shall not be deemed to ~~Rule~~be ~~425~~“filed” for purposes of Section 18 of, or otherwise regarded as filed under, the Securities Exchange Act ~~(17~~of ~~CFR~~1934, ~~230~~as amended.~~425)~~ Unless expressly incorporated into a filing of McDATA under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, made after the date hereof, the information contained herein shall not be incorporated by reference into any filing of McDATA, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

~~o Soliciting~~ITEM ~~material~~7.01 ~~pursuant~~— toRegulation ~~Rule~~FD ~~14a-12 under the Exchange Act (17 CFR 240.14a-12)~~Disclosure

~~o Pre-commencement~~The ~~communications~~information ~~pursuant~~set toforth under Item 2.02 of this ~~Rule~~Report ~~14d~~on Form 8-~~2(b)~~K ~~under~~is ~~the~~hereby ~~Exchange~~incorporated ~~Act~~in ~~(17~~this ~~CFR~~Item 7.01 ~~240~~by reference.~~14d-2(b))~~

~~o Pre-commencement~~ITEM ~~communications~~9.01 ~~pursuant~~— ~~to Rule~~Financial ~~13e-4(c)~~Statements ~~under~~and ~~the Exchange Act (17 CFR 240.13e-4(c))~~Exhibits

~~ITEM~~ (d) Exhibits ~~8.01 — Other Events~~

On June 7, 2006, John A. Kelley, the Chairman, President and Chief Executive Officer of McDATA Corporation (“McDATA”), entered into a Rule 10b5-1 Stock Purchase Plan to purchase $100,000 of McDATA Class B common stock at market prices on September 25, 2006. The purchase date was required to be set 6 months from a March 2006 sale of shares for tax purposes in order to be compliant with 16(b) of the Securities Exchange Act of 1934, as amended.

99.1		August 24, 2006 Press Release

99.2		August 24, 2006 Prepared Script

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

~~MCDATA~~McDATA ~~CORPORATION~~Corporation By: /s/ THOMAS O. MCGIMPSEY Thomas O. McGimpsey Executive Vice President and Chief Legal Officer

Dated: JuneAugust 725, 2006

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