MCDATA CORP
S-1/A, EX-1.1, 2000-07-17
COMMUNICATIONS EQUIPMENT, NEC
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<PAGE>   1
                                                                     EXHIBIT 1.1

                            [INSERT NUMBER OF SHARES]

                               MCDATA CORPORATION

                      CLASS B COMMON STOCK, $0.01 PAR VALUE


                             UNDERWRITING AGREEMENT
                             ----------------------



                                                              ______, 2000



CREDIT SUISSE FIRST BOSTON CORPORATION
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
DEUTSCH BANC ALEX. BROWN
  As Representatives of the Several Underwriters,
    c/o Credit Suisse First Boston Corporation,
         Eleven Madison Avenue,
           New York, N.Y. 10010-3629

Dear Sirs:

     1.   Introductory. McDATA Corporation, a Delaware corporation ("COMPANY"),
proposes to issue and sell shares ("FIRM SECURITIES") of its Class B Common
Stock, $0.01 par value per share ("SECURITIES") and also proposes to issue and
sell to the Underwriters, at the option of the Underwriters, an aggregate of not
more than additional shares ("OPTIONAL SECURITIES") of its Securities as set
forth below. The Firm Securities and the Optional Securities are herein
collectively called the "OFFERED SECURITIES". The Company hereby agrees with the
several Underwriters named in Schedule A hereto ("UNDERWRITERS") as follows:

     2.   Representations and Warranties of the Company. The Company represents
and warrants to, and agrees with, the several Underwriters that:

          (a) A registration statement (No. 333- ) relating to the Offered
     Securities, including a form of prospectus, has been filed with the
     Securities and Exchange Commission ("COMMISSION") and either (i) has been
     declared effective under the Securities Act of 1933, as amended ("ACT"),
     and is not proposed to be amended or (ii) is proposed to be amended by
     amendment or post-effective amendment. If such registration statement
     ("INITIAL REGISTRATION STATEMENT") has been declared effective, either (i)
     an additional registration statement ("ADDITIONAL REGISTRATION STATEMENT")
     relating to the Offered Securities may have been filed with the Commission
     pursuant to Rule 462(b) ("RULE 462(b)") under the Act and, if so filed, has
     become effective upon filing pursuant to such Rule and the Offered
     Securities all have been duly registered under the Act pursuant to the
     initial registration statement and, if applicable, the additional
     registration statement or (ii) such an additional registration statement is
     proposed to be filed with the Commission pursuant to Rule 462(b) and will
     become effective upon filing pursuant to such Rule and upon such filing the
     Offered Securities will all have been duly registered under the Act
     pursuant to the initial registration statement and such additional
     registration statement. If the Company does not propose to amend the
     initial registration statement or if an additional registration statement
     has been filed and the Company does not propose to amend it, and if any
     post-effective amendment to either such registration statement has been
     filed with the Commission prior to the execution and delivery of this
     Agreement, the most recent amendment (if any) to each such registration
     statement has been declared effective by the Commission or has become
     effective upon filing pursuant to Rule 462(c) ("RULE 462(c)") under the Act
     or, in the case of the additional registration statement, Rule 462(b). For
     purposes of this Agreement, "EFFECTIVE TIME" with


<PAGE>   2


                                      -2-


     respect to the initial registration statement or, if filed prior to the
     execution and delivery of this Agreement, the additional registration
     statement means (i) if the Company has advised the Representatives that it
     does not propose to amend such registration statement, the date and time as
     of which such registration statement, or the most recent post-effective
     amendment thereto (if any) filed prior to the execution and delivery of
     this Agreement, was declared effective by the Commission or has become
     effective upon filing pursuant to Rule 462(c), or (ii) if the Company has
     advised the Representatives that it proposes to file an amendment or
     post-effective amendment to such registration statement, the date and time
     as of which such registration statement, as amended by such amendment or
     post-effective amendment, as the case may be, is declared effective by the
     Commission. If an additional registration statement has not been filed
     prior to the execution and delivery of this Agreement but the Company has
     advised the Representatives that it proposes to file one, "EFFECTIVE TIME"
     with respect to such additional registration statement means the date and
     time as of which such registration statement is filed and becomes effective
     pursuant to Rule 462(b). "EFFECTIVE DATE" with respect to the initial
     registration statement or the additional registration statement (if any)
     means the date of the Effective Time thereof. The initial registration
     statement, as amended at its Effective Time, including all information
     contained in the additional registration statement (if any) and deemed to
     be a part of the initial registration statement as of the Effective Time of
     the additional registration statement pursuant to the General Instructions
     of the Form on which it is filed and including all information (if any)
     deemed to be a part of the initial registration statement as of its
     Effective Time pursuant to Rule 430A(b) ("RULE 430A(b)") under the Act, is
     hereinafter referred to as the "INITIAL REGISTRATION STATEMENT". The
     additional registration statement, as amended at its Effective Time,
     including the contents of the initial registration statement incorporated
     by reference therein and including all information (if any) deemed to be a
     part of the additional registration statement as of its Effective Time
     pursuant to Rule 430A(b), is hereinafter referred to as the "ADDITIONAL
     REGISTRATION STATEMENT". The Initial Registration Statement and the
     Additional Registration Statement are herein referred to collectively as
     the "REGISTRATION STATEMENTS" and individually as a "REGISTRATION
     STATEMENT". The form of prospectus relating to the Offered Securities, as
     first filed with the Commission pursuant to and in accordance with Rule
     424(b) ("RULE 424(b)") under the Act or (if no such filing is required) as
     included in a Registration Statement, is hereinafter referred to as the
     "PROSPECTUS". No document has been or will be prepared or distributed in
     reliance on Rule 434 under the Act.

          (b) If the Effective Time of the Initial Registration Statement is
     prior to the execution and delivery of this Agreement: (i) on the Effective
     Date of the Initial Registration Statement, the Initial Registration
     Statement conformed in all material respects to the requirements of the Act
     and the rules and regulations of the Commission ("RULES AND REGULATIONS")
     and did not include any untrue statement of a material fact or omit to
     state any material fact required to be stated therein or necessary to make
     the statements therein not misleading, (ii) on the Effective Date of the
     Additional Registration Statement (if any), each Registration Statement
     conformed, or will conform, in all material respects to the requirements of
     the Act and the Rules and Regulations and did not include, or will not
     include, any untrue statement of a material fact and did not omit, or will
     not omit, to state any material fact required to be stated therein or
     necessary to make the statements therein not misleading and (iii) on the
     date of this Agreement, the Initial Registration Statement and, if the
     Effective Time of the Additional Registration Statement is prior to the
     execution and delivery of this Agreement, the Additional Registration
     Statement each conforms, and at the time of filing of the Prospectus
     pursuant to Rule 424(b) or (if no such filing is required) at the Effective
     Date of the Additional Registration Statement in which the Prospectus is
     included, each Registration Statement and the Prospectus will conform, in
     all material respects to the requirements of the Act and the Rules and
     Regulations, and neither of such documents includes, or will include, any
     untrue statement of a material fact or omits, or will omit, to state any
     material fact required to be stated therein or necessary to make the
     statements therein not misleading. If the Effective Time of the Initial
     Registration Statement is subsequent to the execution and delivery of this
     Agreement: on the Effective Date of the Initial Registration Statement, the
     Initial Registration Statement and the Prospectus will conform in all
     material respects to the requirements of the Act and the Rules and
     Regulations, neither of such documents will include any untrue statement of
     a material fact or will omit to state any material fact required to be
     stated therein or necessary to make the statements therein not misleading,
     and no Additional Registration Statement has been or will be filed. The two
     preceding sentences do not apply to statements in or omissions from a
     Registration Statement or the


<PAGE>   3


                                      -3-


     Prospectus based upon written information furnished to the Company by any
     Underwriter through the Representatives specifically for use therein, it
     being understood and agreed that the only such information is that
     described as such in Section 7(c) hereof.

          (c) The Company has been duly incorporated and is an existing
     corporation in good standing under the laws of the State of Delaware, with
     power and authority (corporate and other) to own its properties and conduct
     its business as described in the Prospectus; and the Company is duly
     qualified to do business as a foreign corporation in good standing in all
     other jurisdictions in which its ownership or lease of property or the
     conduct of its business requires such qualification), except where the
     failure to qualify would not have a material adverse effect on the
     condition (financial or other), business, properties or results of
     operations of the Company and its subsidiaries taken as a whole ("MATERIAL
     ADVERSE EFFECT").

          (d) Each subsidiary of the Company has been duly incorporated and is
     an existing corporation in good standing under the laws of the jurisdiction
     of its incorporation, with power and authority (corporate and other) to own
     its properties and conduct its business as described in the Prospectus; and
     each subsidiary of the Company is duly qualified to do business as a
     foreign corporation in good standing in all other jurisdictions in which
     its ownership or lease of property or the conduct of its business requires
     such qualification, except where the failure to qualify would not have a
     Material Adverse Effect; all of the issued and outstanding capital stock of
     each subsidiary of the Company has been duly authorized and validly issued
     and is fully paid and nonassessable; and the capital stock of each
     subsidiary owned by the Company, directly or through subsidiaries, is owned
     free from liens, encumbrances and defects.

          (e) The Offered Securities and all other outstanding shares of capital
     stock of the Company have been duly authorized; all outstanding shares of
     capital stock of the Company are, and, when the Offered Securities have
     been delivered and paid for in accordance with this Agreement on each
     Closing Date (as defined below), such Offered Securities will have been,
     validly issued, fully paid and nonassessable and will conform to the
     description thereof contained in the Prospectus; and the stockholders of
     the Company have no preemptive rights with respect to the Offered
     Securities. The authorized capital stock of the Company conforms to the
     description thereof contained in the Prospectus. The information set forth
     under the captions "Our Relationship with EMC After the Offering" and
     "Arrangements between McDATA and EMC" in the Prospectus is true and
     complete in all material respects.

          (f) Except as disclosed in the Prospectus, there are no contracts,
     agreements or understandings between the Company and any person that would
     give rise to a valid claim against the Company or any Underwriter for a
     brokerage commission, finder's fee or other like payment in connection with
     this offering.

          (g) Except as disclosed in the Prospectus, there are no contracts,
     agreements or understandings between the Company and any person granting
     such person the right to require the Company to file a registration
     statement under the Act with respect to any securities of the Company owned
     or to be owned by such person or to require the Company to include such
     securities in the securities registered pursuant to a Registration
     Statement or in any securities being registered pursuant to any other
     registration statement filed by the Company under the Act.

          (h) The Offered Securities have been approved for quotation and
     trading on the Nasdaq Stock Market's National Market ("NASDAQ NATIONAL
     MARKET"), subject to notice of issuance.

          (i) No consent, approval, authorization, or order of, or filing with,
     any governmental agency or body or any court is required for the
     consummation of the transactions contemplated by this Agreement in
     connection with the issuance and sale of the Offered Securities by the
     Company, except such as have been obtained and made under the Act and the
     Exchange Act and such as may be required under state securities laws.


<PAGE>   4


                                      -4-


          (j) Neither the Company nor any subsidiary of the Company is (i) in
     violation of the charter or by-laws of the Company or any such subsidiary,
     (ii) in default in the performance of any obligation, agreement, covenant
     or condition contained in any indenture, loan agreement, mortgage, lease or
     other agreement or instrument that is material to the Company and its
     subsidiaries, taken as a whole, to which the Company or any subsidiary of
     the Company is a party or by which the Company or any subsidiary of the
     Company or any of their properties is bound which default would have a
     Material Adverse Effect or (iii) in violation of any applicable law or any
     rule, regulation, judgment, order or decree of any court or any
     governmental body or agency having jurisdiction over the Company, any
     subsidiary of the Company or any of their properties which violation would
     have a Material Adverse Effect.

          (k) The execution, delivery and performance of this Agreement and the
     Intercompany Agreements (as defined in Section 2(y)) and the issuance and
     sale of the Offered Securities by the Company will not result in a breach
     or violation of any of the terms and provisions of, or constitute a default
     under, any statute, any rule, regulation or order of any governmental
     agency or body or any court, domestic or foreign, having jurisdiction over
     the Company or any of its subsidiaries or any of its properties, or, except
     as would not have a Material Adverse Effect, any agreement or instrument to
     which the Company or any of its subsidiaries is a party or by which the
     Company or any subsidiary is bound or to which any of the properties of the
     Company or any subsidiary is subject, or the charter or by-laws of the
     Company or such subsidiary, and, except as would not have a Material
     Adverse Effect, will not result in the suspension, termination or
     revocation of any Authorization (defined below) of the Company, or any of
     its subsidiaries or any other impairment of the rights of the holder of any
     such Authorization, and the Company has full power and authority to
     authorize, issue and sell the Offered Securities as contemplated by this
     Agreement.

          (l) This Agreement has been duly authorized, executed and delivered by
     the Company.

          (m) Except as disclosed in the Prospectus, the Company and its
     subsidiaries have good and marketable title to all real properties and all
     other properties and assets owned by them, in each case free from liens,
     encumbrances and defects that would materially affect the value thereof or
     materially interfere with the use made or to be made thereof by them,
     except where the failure to have such good and marketable title would not
     have a Material Adverse Effect; the Company and its subsidiaries hold any
     leased real or personal property under valid and enforceable leases with no
     exceptions that would materially interfere with the use made or to be made
     thereof by them, except in each case as would have a Material Adverse
     Effect.

          (n) The Company and its subsidiaries possess adequate certificates,
     authorities or permits ("AUTHORIZATIONS") issued by appropriate
     governmental agencies or bodies necessary to conduct the business now
     operated by them and have not received any notice of proceedings relating
     to the revocation or modification of any Authorization that, if determined
     adversely to the Company or any of its subsidiaries, would individually or
     in the aggregate have a Material Adverse Effect.

          (o) No labor dispute with the employees of the Company or any
     subsidiary exists or, to the knowledge of the Company, is imminent that
     might have a Material Adverse Effect.

          (p) The Company and its subsidiaries own or have rights under licenses
     to, or can acquire on reasonable terms without any Material Adverse Effect
     adequate rights to, patents, patent applications, inventions, trademarks,
     service marks, trade names, know-how, copyrights, confidential information
     and other intellectual property (collectively, "INTELLECTUAL PROPERTY
     RIGHTS") necessary to conduct the business now operated by them, or
     presently employed by them. Except as set forth in the Registration
     Statement or in the Prospectus, neither the Company, nor its subsidiaries,
     has received any notice of a claim that: (i) challenges the Company's or
     its subsidiaries' rights in or to any Intellectual Property; (ii)
     challenges the validity or scope of any Intellectual Property; (iii) any
     third party has or will be able to establish any rights in the Intellectual
     Property, except for the ownership rights of the owners of the Intellectual
     Property which is licensed to the Company or the rights of parties to whom
     the Company has granted licenses of such Intellectual Property; (iv) the
     Intellectual Property infringes or otherwise violates any patent,
     copyright,


<PAGE>   5


                                       -5-


     trade secret, trademark or other proprietary right of any third party; or
     (v) there is infringement of the Intellectual Property by any third party,
     which, in the case of any such claim specified in clauses (i), (ii), (iii),
     (iv) or (v) above, singly or in the aggregate, if the subject of an
     unfavorable decision, ruling or finding, would have a Material Adverse
     Effect. The Company has agreements in place with each employee, consultant
     or other person or party engaged by the Company for the assignment to the
     Company of all intellectual property and exploitation rights in the work
     performed and the protection of the trade secrets and confidential
     information of the Company and of third parties which have been developed
     by such person for or on behalf of the Company.

          (q) Except as disclosed in the Prospectus, neither the Company nor any
     of its subsidiaries is in violation of any statute, any rule, regulation,
     decision or order of any governmental agency or body or any court, domestic
     or foreign, relating to the use, disposal or release of hazardous or toxic
     substances or relating to the protection or restoration of the environment
     or human exposure to hazardous or toxic substances (collectively,
     "ENVIRONMENTAL LAWS"), owns or, to its knowledge, operates any real
     property contaminated with any substance that is subject to any
     environmental laws, is liable for any off-site disposal or contamination
     pursuant to any environmental laws, or is subject to any claim relating to
     any environmental laws, which violation, contamination, liability or claim
     would individually or in the aggregate have a Material Adverse Effect; and
     the Company is not aware of any pending investigation which might lead to
     such a claim.

          (r) Except as disclosed in the Prospectus, there are no pending
     actions, suits or proceedings against or affecting the Company, any of its
     subsidiaries or any of their respective properties that, if determined
     adversely to the Company or any of its subsidiaries, would individually or
     in the aggregate have a Material Adverse Effect, or would materially and
     adversely affect the ability of the Company to perform its obligations
     under this Agreement, or which are otherwise material in the context of the
     sale of the Offered Securities; and no such actions, suits or proceedings
     are, to the Company's knowledge, threatened or contemplated.

          (s) The financial statements included in each Registration Statement
     and the Prospectus present fairly the financial position of the Company and
     its consolidated subsidiaries as of the dates shown and their results of
     operations and cash flows for the periods shown, and such financial
     statements have been prepared in conformity with the generally accepted
     accounting principles in the United States applied on a consistent basis;
     the financial schedules included in each Registration Statement present
     fairly the information required to be stated therein.

          (t) Except as disclosed in the Prospectus, since the date of the
     latest audited financial statements included in the Prospectus there has
     been no material adverse change, nor any development or event involving a
     prospective material adverse change, in the condition (financial or other),
     business, properties or results of operations of the Company and its
     subsidiaries taken as a whole, and, except as disclosed in or contemplated
     by the Prospectus, there has been no dividend or distribution of any kind
     declared, paid or made by the Company on any class of its capital stock.

          (u) The Company has filed all foreign, federal, state and local tax
     returns that are required to be filed or has requested extensions thereof
     (except in any case in which the failure so to file would not have a
     Material Adverse Effect) and has paid all taxes required to be paid by it
     and any other assessment, fine or penalty levied against it, to the extent
     that any of the foregoing is due and payable, except for any such
     assessment, fine or penalty that is currently being contested in good faith
     or as described in or contemplated by the Prospectus.

          (v) The Company and each of its subsidiaries maintains a system of
     internal accounting controls sufficient to provide reasonable assurance
     that (i) transactions are executed in accordance with management's general
     or specific authorizations; (ii) transactions are recorded as necessary to
     permit preparation of financial statements in conformity with generally
     accepted accounting principles and to


<PAGE>   6


                                      -6-


     maintain accountability for assets; (iii) access to assets is permitted
     only in accordance with management's general or specific authorization; and
     (iv) the recorded accountability for assets is compared with the existing
     assets at reasonable intervals and appropriate action is taken with respect
     to any differences.

          (w) The Company and each of its Subsidiaries are insured by insurers
     of recognized financial responsibility against such losses and risks and in
     such amounts as are prudent and customary in the businesses in which they
     are engaged; neither the Company nor any such Subsidiary has been refused
     any insurance coverage sought or applied for; and neither the Company nor
     any such Subsidiary has any reason to believe that it will not be able to
     renew its existing insurance coverage as and when such coverage expires or
     to obtain similar coverage from similar insurers as may be necessary to
     continue its business at a cost that would not have a Material Adverse
     Effect.

          (x) The Company is not and, after giving effect to the offering and
     sale of the Offered Securities and the application of the proceeds thereof
     as described in the Prospectus, will not be an "investment company" as
     defined in the Investment Company Act of 1940.

          (y) Each of the Asset Transfer Agreement, Investors' Rights Agreement,
     as amended, Services Agreement, Technology Rights Agreement, Consent
     Agreement, Sublicense Agreement, Common Stock Agreement, Amended and
     Restated Tax Sharing Agreement, Master Transaction Agreement, Master
     Confidential Disclosure and License Agreement and Indemnification and
     Insurance Matters Agreement (collectively, the "Intercompany Agreements"),
     has been duly authorized, executed and delivered by the Company and EMC, is
     in full force and effect, and constitutes a valid and legally binding
     obligation of the Company and EMC, enforceable against each of the Company
     and EMC in accordance with its terms, subject to bankruptcy, insolvency,
     reorganization and other laws of general applicability relating to or
     affecting creditors' rights and to general equity principles.

     3.   Purchase, Sale and Delivery of Offered Securities. On the basis of the
representations, warranties and agreements herein contained, but subject to the
terms and conditions herein set forth, the Company agrees to sell to the
Underwriters, and the Underwriters agree, severally and not jointly, to purchase
from the Company, at a purchase price of $    per share, the respective numbers
of shares of Firm Securities set forth opposite the names of the Underwriters in
Schedule A hereto.

     The Company will deliver the Firm Securities to the Representatives for the
accounts of the Underwriters, against payment of the purchase price in Federal
(same day) funds by official bank check or checks or wire transfer to an account
at a bank acceptable to Credit Suisse First Boston Corporation ("CSFBC") drawn
to the order of the Company at the office of Testa, Hurwitz & Thibeault, LLP, at
   A.M., New York time, on         , or at such other time not later than seven
full business days thereafter as CSFBC and the Company determine, such time
being herein referred to as the "FIRST CLOSING DATE". For purposes of Rule
15c6-1 under the Exchange Act, the First Closing Date (if later than the
otherwise applicable settlement date) shall be the settlement date for payment
of funds and delivery of securities for all the Offered Securities sold pursuant
to the offering. The certificates for the Firm Securities so to be delivered
will be in definitive, in such denominations and registered in such names as
CSFBC requests and will be made available for checking and packaging at the
above office of Testa, Hurwitz & Thibeault, LLP at least 24 hours prior to the
First Closing Date.

     In addition, upon written notice from CSFBC given to the Company from time
to time not more than 30 days subsequent to the date of the Prospectus, the
Underwriters may purchase all or less than all of the Optional Securities at the
purchase price per Security to be paid for the Firm Securities. The Company
agrees to sell to the Underwriters the number of shares of Optional Securities
specified in such notice and the Underwriters agree, severally and not jointly,
to purchase such Optional Securities. Such Optional Securities shall be
purchased for the account of each Underwriter in the same proportion as the
number of shares of Firm Securities set forth opposite such Underwriter's name
bears to the total number of shares of Firm Securities (subject to adjustment by
CSFBC to eliminate fractions) and may be purchased by the Underwriters only for
the purpose of covering over-allotments made in connection with the sale of the
Firm Securities. No Optional Securities shall be sold or delivered unless the


<PAGE>   7


                                      -7-


Firm Securities previously have been, or simultaneously are, sold and delivered.
The right to purchase the Optional Securities or any portion thereof may be
exercised from time to time and to the extent not previously exercised may be
surrendered and terminated at any time upon notice by CSFBC to the Company.

     Each time for the delivery of and payment for the Optional Securities,
being herein referred to as an "OPTIONAL CLOSING DATE", which may be the First
Closing Date (the First Closing Date and each Optional Closing Date, if any,
being sometimes referred to as a "CLOSING DATE"), shall be determined by CSFBC
but shall be not later than five full business days after written notice of
election to purchase Optional Securities is given. The Company will deliver the
Optional Securities being purchased on each Optional Closing Date to the
Representatives for the accounts of the several Underwriters, at the office of
Testa, Hurwitz & Thibeault, LLP, against payment of the purchase price therefor
in Federal (same day) funds by official bank check or checks or wire transfer to
an account at a bank acceptable to CSFBC drawn to the order of the Company, at
the above office of Testa, Hurwitz & Thibeault, LLP. The certificates for the
Optional Securities being purchased on each Optional Closing Date will be in
definitive form, in such denominations and registered in such names as CSFBC
requests upon reasonable notice prior to such Optional Closing Date and will be
made available for checking and packaging at the above office of        at a
reasonable time in advance of such Optional Closing Date.

     4.   Offering by Underwriters. It is understood that the several
Underwriters propose to offer the Offered Securities for sale to the public as
set forth in the Prospectus.

     5.   Certain Agreements of the Company. The Company agrees with the several
Underwriters that:

          (a) If the Effective Time of the Initial Registration Statement is
     prior to the execution and delivery of this Agreement, the Company will
     file the Prospectus with the Commission pursuant to and in accordance with
     subparagraph (1) (or, if applicable and if consented to by CSFBC, such
     consent no to be unreasonably withheld, subparagraph (4)) of Rule 424(b)
     not later than the earlier of (A) the second business day following the
     execution and delivery of this Agreement or (B) the fifteenth business day
     after the Effective Date of the Initial Registration Statement. The Company
     will advise CSFBC promptly of any such filing pursuant to Rule 424(b). If
     the Effective Time of the Initial Registration Statement is prior to the
     execution and delivery of this Agreement and an additional registration
     statement is necessary to register a portion of the Offered Securities
     under the Act but the Effective Time thereof has not occurred as of such
     execution and delivery, the Company will file the additional registration
     statement or, if filed, will file a post-effective amendment thereto with
     the Commission pursuant to and in accordance with Rule 462(b) on or prior
     to 10:00 P.M., New York time, on the date of this Agreement or, if earlier,
     on or prior to the time the Prospectus is printed and distributed to any
     Underwriter, or will make such filing at such later date as shall have been
     consented to by CSFBC.

          (b) The Company will advise CSFBC promptly of any proposal to amend or
     supplement the initial or any additional registration statement as filed or
     the related prospectus or the Initial Registration Statement, the
     Additional Registration Statement (if any) or the Prospectus and will not
     effect such amendment or supplementation without CSFBC's consent, which
     consent shall not be unreasonably withheld; and the Company will also
     advise CSFBC promptly of the effectiveness of each Registration Statement
     (if its Effective Time is subsequent to the execution and delivery of this
     Agreement) and of any amendment or supplementation of a Registration
     Statement or the Prospectus and of the institution by the Commission of any
     stop order proceedings in respect of a Registration Statement and will use
     its reasonable efforts to prevent the issuance of any such stop order and
     to obtain as soon as possible its lifting, if issued.

          (c) If, at any time when a prospectus relating to the Offered
     Securities is required to be delivered under the Act in connection with
     sales by any Underwriter or dealer, any event occurs as a result of which
     the Prospectus as then amended or supplemented would include an untrue
     statement of a material fact or omit to state any material fact necessary
     to make the statements therein, in the light of the circumstances under
     which they were made, not misleading, or if it is necessary at any time to
     amend the Prospectus to comply with the Act, the Company will promptly
     notify CSFBC of such event and will promptly prepare and file with the
     Commission, at its own expense, an amendment or supplement which will
     correct such


<PAGE>   8


                                      -8-


     statement or omission or an amendment which will effect such compliance.
     Neither CSFBC's consent to, nor the Underwriters' delivery of, any such
     amendment or supplement shall constitute a waiver of any of the conditions
     set forth in Section 6.

          (d) As soon as practicable, but not later than the Availability Date
     (as defined below), the Company will make generally available to its
     securityholders an earnings statement covering a period of at least 12
     months beginning after the Effective Date of the Initial Registration
     Statement (or, if later, the Effective Date of the Additional Registration
     Statement) which will satisfy the provisions of Section 11(a) of the Act.
     For the purpose of the preceding sentence, "AVAILABILITY DATE" means the
     45th day after the end of the fourth fiscal quarter following the fiscal
     quarter that includes such Effective Date, except that, if such fourth
     fiscal quarter is the last quarter of the Company's fiscal year,
     "AVAILABILITY DATE" means the 90th day after the end of such fourth fiscal
     quarter.

          (e) The Company will furnish to the Representatives copies of each
     Registration Statement four (4) of which will be signed and will include
     all exhibits), each related preliminary prospectus, and, so long as a
     prospectus relating to the Offered Securities is required to be delivered
     under the Act in connection with sales by any Underwriter or dealer, the
     Prospectus and all amendments and supplements to such documents, in each
     case in such quantities as CSFBC reasonably requests. The Prospectus shall
     be so furnished on or prior to 3:00 P.M., New York time, on the business
     day following the later of the execution and delivery of this Agreement or
     the Effective Time of the Initial Registration Statement. All other
     documents shall be so furnished as soon as available. The Company will pay
     the expenses of printing and distributing to the Underwriters all such
     documents.

          (f) The Company will arrange for the qualification of the Offered
     Securities for sale under the laws of such jurisdictions as CSFBC
     reasonably designates and will continue such qualifications in effect so
     long as required for the distribution.

          (g) During the period of five (5) years hereafter, the Company will
     furnish to the Representatives and, upon request, to each of the other
     Underwriters, as soon as practicable after the end of each fiscal year, a
     copy of its annual report to stockholders for such year; and the Company
     will furnish to the Representatives (i) as soon as available, a copy of
     each report and any definitive proxy statement of the Company filed with
     the Commission under the Securities Exchange Act of 1934 or mailed to
     stockholders, and (ii) from time to time, such other information concerning
     the Company as CSFBC may reasonably request.

          (h) The Company will pay all expenses incident to the performance of
     its obligations under this Agreement, including, without limitation, (i)
     for any filing fees and other expenses (including fees and disbursements of
     counsel) incurred in connection with qualification of the Offered
     Securities for sale under the laws of such jurisdictions as CSFBC
     designates and the printing of memoranda relating thereto, (ii) for the
     filing fee incident to, and the reasonable fees and disbursements of
     counsel to the Underwriters in connection with, the review by the National
     Association of Securities Dealers, Inc. of the Offered Securities, (iii)
     for any travel expenses of the Company's officers and employees and any
     other expenses of the Company in connection with attending or hosting
     meetings with prospective purchasers of the Offered Securities, and (iv)
     for expenses incurred in distributing preliminary prospectuses and the
     Prospectus (including any amendments and supplements thereto) to the
     Underwriters.

          (i) For a period of 180 days after the date of the initial public
     offering of the Offered Securities, the Company will not offer, sell,
     contract to sell, pledge or otherwise dispose of, directly or indirectly,
     or file with the Commission a registration statement under the Act relating
     to, any additional shares of its Class A or Class B common stock or
     securities convertible into or exchangeable or exercisable for any shares
     of its Class A or Class B common stock other than a registration on Form
     S-8 with respect to securities issued or issuable under the Company's
     employee stock plans described in the Prospectus, or publicly disclose the
     intention to make any such offer, sale, pledge, disposition or filing,
     without the prior written consent of CSFBC, except grants of employee stock
     options pursuant to the terms of a plan disclosed in the


<PAGE>   9


                                      -9-


     Prospectus and in effect on the date hereof (provided that such options
     shall not vest until 180 days after the date of the initial public
     offering) and issuances of Securities pursuant to the exercise of employee
     stock options outstanding on the date hereof. The Company shall use its
     reasonable efforts to obtain lock-up agreements from EMC and from all
     officers, directors and all other shareholders and holders of options for
     Securities of the Company, each of which shall be promptly delivered to
     CSFBC.

     6.   Conditions of the Obligations of the Underwriters. The obligations of
the several Underwriters to purchase and pay for the Firm Securities on the
First Closing Date and the Optional Securities to be purchased on each Optional
Closing Date will be subject to the accuracy of the representations and
warranties on the part of the Company herein, to the accuracy of the statements
of Company officers made pursuant to the provisions hereof, to the performance
by the Company of its obligations hereunder and to the following additional
conditions precedent:

          (a) The Representatives shall have received a letter, dated the date
     of delivery thereof (which, if the Effective Time of the Initial
     Registration Statement is prior to the execution and delivery of this
     Agreement, shall be on or prior to the date of this Agreement or, if the
     Effective Time of the Initial Registration Statement is subsequent to the
     execution and delivery of this Agreement, shall be prior to the filing of
     the amendment or post-effective amendment to the registration statement to
     be filed shortly prior to such Effective Time), of PricewaterhouseCoopers
     LLP confirming that they are independent public accountants within the
     meaning of the Act and the applicable published Rules and Regulations
     thereunder and stating to the effect that:

          (i) in their opinion the financial statements and schedules examined
          by them and included in the Registration Statements comply as to form
          in all material respects with the applicable accounting requirements
          of the Act and the related published Rules and Regulations;

          (ii) they have performed the procedures specified by the American
          Institute of Certified Public Accountants for a review of interim
          financial information as described in Statement of Auditing Standards
          No. 71, Interim Financial Information, on the unaudited financial
          statements included in the Registration Statements;

          (iii) on the basis of a reading of the latest available interim
          financial statements of the Company, inquiries of officials of the
          Company who have responsibility for financial and accounting matters
          and other specified procedures, nothing came to their attention that
          caused them to believe that:

                    (A) the unaudited financial statements included in the
               Registration Statements do not comply as to form in all material
               respects with the applicable accounting requirements of the Act
               and the related published Rules and Regulations or any material
               modifications should be made to such unaudited financial
               statements for them to be in conformity with generally accepted
               accounting principles;

                    (B) the unaudited consolidated net sales, net operating
               income, net income and net income per share amounts for the
               -month periods ended [Insert dates] included in the Prospectus do
               not agree with the amounts set forth in the unaudited
               consolidated financial statements for those same periods or were
               not determined on a basis substantially consistent with that of
               the corresponding amounts in the audited statements of income;

                    (C) at the date of the latest available balance sheet read
               by such accountants, or at a subsequent specified date not more
               than three business days prior to the date of this Agreement,
               there was any change in the capital stock or any increase in
               short-term indebtedness or long-term debt of the Company and its
               consolidated subsidiaries or, at the date of the latest available
               balance sheet read by such accountants, there was any decrease in
               consolidated net current assets or net assets, as compared with
               amounts shown on the latest balance sheet included in the
               Prospectus; or


<PAGE>   10


                                      -10-


                    (D) for the period from the closing date of the latest
               income statement included in the Prospectus to the closing date
               of the latest available income statement read by such accountants
               there were any decreases, as compared with the corresponding
               period of the previous year and with the period of corresponding
               length ended the date of the latest income statement included in
               the Prospectus, in consolidated revenue, or net operating income,
               or in the total or per share amounts of consolidated income
               before extraordinary items or net income,

          except in all cases set forth in clauses (C) and (D) above for
          changes, increases or decreases which the Prospectus discloses have
          occurred or may occur or which are described in such letter; and

          (iv) they have compared specified dollar amounts (or percentages
          derived from such dollar amounts) and other financial information
          contained in the Registration Statements (in each case to the extent
          that such dollar amounts, percentages and other financial information
          are derived from the general accounting records of the Company and its
          subsidiaries subject to the internal controls of the Company's
          accounting system or are derived directly from such records by
          analysis or computation) with the results obtained from inquiries, a
          reading of such general accounting records and other procedures
          specified in such letter and have found such dollar amounts,
          percentages and other financial information to be in agreement with
          such results, except as otherwise specified in such letter.

     For purposes of this subsection, (i) if the Effective Time of the Initial
     Registration Statement is subsequent to the execution and delivery of this
     Agreement, "REGISTRATION STATEMENTS" shall mean the initial registration
     statement as proposed to be amended by the amendment or post-effective
     amendment to be filed shortly prior to its Effective Time, (ii) if the
     Effective Time of the Initial Registration Statement is prior to the
     execution and delivery of this Agreement but the Effective Time of the
     Additional Registration Statement is subsequent to such execution and
     delivery, "REGISTRATION STATEMENTS" shall mean the Initial Registration
     Statement and the additional registration statement as proposed to be filed
     or as proposed to be amended by the post-effective amendment to be filed
     shortly prior to its Effective Time, and (iii) "PROSPECTUS" shall mean the
     prospectus included in the Registration Statements.

          (b) If the Effective Time of the Initial Registration Statement is not
     prior to the execution and delivery of this Agreement, such Effective Time
     shall have occurred not later than 10:00 P.M., New York time, on the date
     of this Agreement or such later date as shall have been consented to by
     CSFBC. If the Effective Time of the Additional Registration Statement (if
     any) is not prior to the execution and delivery of this Agreement, such
     Effective Time shall have occurred not later than 10:00 P.M., New York
     time, on the date of this Agreement or, if earlier, the time the Prospectus
     is printed and distributed to any Underwriter, or shall have occurred at
     such later date as shall have been consented to by CSFBC. If the Effective
     Time of the Initial Registration Statement is prior to the execution and
     delivery of this Agreement, the Prospectus shall have been filed with the
     Commission in accordance with the Rules and Regulations and Section 5(a) of
     this Agreement. Prior to such Closing Date, no stop order suspending the
     effectiveness of a Registration Statement shall have been issued and no
     proceedings for that purpose shall have been instituted or, to the
     knowledge of the Company or the Representatives, shall be contemplated by
     the Commission.

          (c) Subsequent to the execution and delivery of this Agreement, there
     shall not have occurred (i) any change, or any development or event
     involving a prospective change, in the condition (financial or other),
     business, properties or results of operations of the Company and its
     subsidiaries taken as one enterprise which, in the judgment of a majority
     in interest of the Underwriters including the Representatives, is material
     and adverse and makes it impractical or inadvisable to proceed with
     completion of the public offering or the sale of and payment for the
     Offered Securities; (ii) any downgrading in the rating of any debt
     securities of the Company by any "nationally recognized statistical rating
     organization" (as defined for purposes of Rule 436(g) under the Act), or
     any public announcement


<PAGE>   11


                                      -11-


     that any such organization has under surveillance or review its rating of
     any debt securities of the Company (other than an announcement with
     positive implications of a possible upgrading, and no implication of a
     possible downgrading, of such rating); (iii) any material suspension or
     material limitation of trading in securities generally on the New York
     Stock Exchange, or any setting of minimum prices for trading on such
     exchange, or any suspension of trading of any securities of the Company on
     any exchange or in the over-the-counter market; (iv) any banking moratorium
     declared by U.S. Federal or, New York authorities; or (v) any outbreak or
     escalation of major hostilities in which the United States is involved, any
     declaration of war by Congress or any other substantial national or
     international calamity or emergency if, in the judgment of a majority in
     interest of the Underwriters including the Representatives, the effect of
     any such outbreak, escalation, declaration, calamity or emergency makes it
     impractical or inadvisable to proceed with completion of the public
     offering or the sale of and payment for the Offered Securities.

          (d) The Representatives shall have received an opinion, dated such
     Closing Date, of Skadden, Arps, Slate, Meagher & Flom LLP, counsel for the
     Company, to the effect that:

               (i) The Offered Securities delivered on such Closing Date have
          been duly authorized and, when delivered to and paid for by the
          Underwriters in accordance with the terms of this Agreement, will be
          validly issued, fully paid and nonassessable; and except as set forth
          in the Registration Statement and Prospectus, the issuance of the
          Offered Securities will not be subject to any preemptive rights
          arising under the Company's Certificate of Incorporation, By-laws,
          Delaware General Corporation Law, or any agreement or instrument filed
          as an exhibit to the Registration Statement (the "Applicable
          Contracts");

               (ii) The Company is not and, after giving effect to the offering
          and sale of the Offered Securities and the application of the proceeds
          thereof as described in the Prospectus, will not be an "investment
          company" as defined in the Investment Company Act of 1940;

               (iii) No consent, approval, authorization or order of, or filing
          with, any governmental agency or body or any court having jurisdiction
          over the Company or any of its subsidiaries under the laws of the
          State of Delaware and the United States of America that are normally
          applicable to transactions of the type contemplated by this Agreement
          ("Applicable Laws") is required to be made or obtained by the Company
          for the execution and delivery of this Agreement or the issuance or
          sale of the Offered Securities by the Company pursuant to this
          Agreement, except such as have been obtained and made under the Act
          and such as may be required under state securities laws;

               (iv) The execution and delivery by the Company of this Agreement
          and the Intercompany Agreements and the issuance and sale of the
          Offered Securities by the Company will not contravene any Applicable
          Law, or conflict with the Certificate of Incorporation or By-laws of
          the Company or any such subsidiary; and the Company has the corporate
          power and corporate authority to authorize, issue and sell the Offered
          Securities as contemplated by this Agreement;

               (v) Such counsel has been advised by the Commission that the
          Initial Registration Statement was declared effective under the Act as
          of the date and time specified in such opinion, the Additional
          Registration Statement (if any) was filed and became effective under
          the Act as of the date and time (if determinable) specified in such
          opinion; the Prospectus was filed with the Commission within the time
          period specified in Rule 424(b); such counsel has been advised by the
          Commission that no stop order suspending the effectiveness of a
          Registration Statement has been issued and, to the best of such
          counsel's knowledge, no proceedings for that purpose have been
          instituted or are pending or threatened by the Commission; each
          Registration Statement and the Prospectus, and each amendment or
          supplement thereto, as of their respective effective dates, appeared
          on their face to be appropriately responsive in all material respects
          to the requirements of the Act and the Rules and Regulations; it being
          understood that such counsel need express no


<PAGE>   12


                                      -12-


          opinion as to the financial statements or other financial data
          contained in the Registration Statements or the Prospectus;

               (vi) The statements set forth in the Prospectus under the
          captions "Description of Capital Stock", "Our Relationship with EMC
          After the Offering", "Arrangements between McDATA and EMC" and
          paragraphs 4, 6 and 7 of "Shares Eligible for Future Sale", in each
          case insofar as such statements constitute summaries of the legal
          matters or certain provisions of the documents referred to therein,
          fairly summarize the matters referred to therein in all material
          respects;

               (vii) In addition, such counsel shall state that, in connection
          with the preparation of the Registration Statement and the Prospectus,
          such counsel has participated in conferences with officers and
          representatives of the Company, corporate in-house counsel for EMC,
          the Underwriters, counsel for the Underwriters and the independent
          accountants of the Company, at which conferences such parties
          discussed the contents of the Registration Statement and the
          Prospectus; and that, while the limitations inherent in the
          independent verification of factual matters and the character of
          determinations involved in the registration process are such that such
          counsel is not passing upon and does not assume any responsibility for
          the accuracy, completeness or fairness of the statements contained in
          the Registration Statement or the Prospectus, subject to the foregoing
          and based on such participation, no facts have come to the attention
          of such counsel which have caused such counsel to believe that the
          Registration Statement, at the time it became effective (but after
          giving effect to changes incorporated pursuant to Rule 430A under the
          Act), contained any untrue statement of a material fact or omitted to
          state any material fact required to be stated therein or necessary in
          order to make the statements therein not misleading (except that such
          counsel need not express such view with respect to the financial
          statements, including the notes and schedules thereto, or any other
          financial or accounting data included therein or excluded therefrom or
          from the exhibits to the Registration Statement), or that the
          Prospectus, as of the date of such Prospectus and as of the Closing
          Date, contained or contains any untrue statement of a material fact or
          omitted or omits to state any material fact necessary in order to make
          the statements therein, in light of the circumstances under which they
          were made, not misleading (except that such counsel need not express
          such view with respect to the financial statements, including the
          notes and schedules thereto, or any other financial or accounting data
          included therein); and provided that it is understood that such
          counsel does not express any opinion regarding the information
          contained in or the accuracy, completeness or correctness or the
          adequacy of the disclosure contained in the Registration Statement or
          Prospectus;

               (viii) The Intercompany Agreements have been duly authorized,
          executed and delivered by the Company, and each constitutes a valid
          and binding obligation of the Company, enforceable in accordance with
          its terms under the laws of the State of New York, subject to
          bankruptcy, insolvency, reorganization and other laws of general
          applicability relating to or affecting creditors' rights and to
          general equity principles;

               (ix) No consent, approval, authorization, order, registration or
          qualification of or with any court or governmental agency or body
          having jurisdiction over the Company or any of its subsidiaries is
          required to authorize or is required in connection with the execution,
          delivery or enforceability by the Company of each of the Intercompany
          Agreements, except such as shall have been obtained or waived or that,
          if not obtained or waived, would not have a material adverse effect on
          the Company's businesses as described in the Prospectus or on the
          ability of the Company and the Underwriters to consummate the offering
          contemplated hereby.

          (e) The Representatives shall have received an opinion, dated such
     Closing Date, of Paul T. Dacier, general counsel for EMC, to the effect
     that:

               (i) The Company is duly incorporated, validly existing and in
          good standing as a corporation under the laws of the State of
          Delaware, and has corporate power and authority to


<PAGE>   13


                                      -13-


          own its properties and conduct its business as described in the
          Prospectus; all outstanding shares of common stock of the Company
          (other than the Offered Securities) have been duly authorized and
          validly issued, are fully paid and nonassessable; the Offered
          Securities and all other outstanding shares of the common stock of the
          Company conform to the description thereof contained in the
          Prospectus; and the Company is qualified to do business and in good
          standing as a foreign corporation in all other jurisdictions in which
          its ownership or lease of property or the conduct of its business
          requires such qualification, except to the extent that the failure to
          be so qualified or be in good standing would subject the Company to a
          material liability;

               (ii) No shares of common stock of the Company are required to be
          registered pursuant to any Applicable Agreement;

               (iii) This Agreement has been duly authorized, executed and
          delivered by the Company; the Intercompany Agreements have been duly
          authorized, executed and delivered by EMC, and each constitutes a
          valid and binding obligation of EMC, enforceable in accordance with
          its terms under the laws of the State of New York, subject to
          bankruptcy, insolvency, reorganization and other laws of general
          applicability relating to or affecting creditors' rights and to
          general equity principles;

               (iv) The execution and delivery of this Agreement and the
          Intercompany Agreements by the Company and the consummation by the
          Company of the transactions contemplated hereby and thereby will not
          constitute a violation of or default under any Applicable Agreement;
          the execution and delivery by EMC of the Intercompany Agreements will
          not constitute a violation or default under, any agreement material to
          EMC listed on a schedule provided by EMC to which EMC is a party, nor
          will such action result in any violation of the provisions of the
          Certificate of Incorporation or By-laws of EMC; nor will such action
          result in a violation of the provisions of any statute or any order,
          rule or regulation of any court or governmental agency or body having
          jurisdiction over EMC under applicable law; such counsel does not know
          of any legal or governmental proceedings to which the Company is a
          party required to be described in the Registration Statement or the
          Prospectus which are not described as required or of any contracts or
          documents that are required to be filed as exhibits to the
          Registration Statement which are not filed as required;

               (v) The statements set forth (A) in the Prospectus under the
          captions "Business - Intellectual Property" and "Shares eligible for
          Future Sale" (except that such opinion need not be given with respect
          to paragraphs 4, 6 and 7) and (B) in the Registration Statement in
          Items 14 and 15 of Part II, in each case insofar as such statements
          constitute summaries of the legal matters or certain provisions of the
          documents referred to therein, fairly summarize the matters referenced
          therein in all material respects; the form of certificate for the
          Offered Securities conforms in all material respects to the
          requirements of the Delaware General Corporation Law;

               (vi) Except as set forth in the Registration Statement or in the
          Prospectus under the caption "Legal Proceedings" to the knowledge of
          such counsel, there is no pending or threatened action, suit or claim
          with respect to infringement of any issued patent owned by the Company
          or with respect to the Company's infringement or misappropriation of
          any patent, copyright or trade secret rights of any third party;

               (vii) Except as set forth in the Registration Statement or in the
          Prospectus and except for matters otherwise disclosed in such opinion,
          to the knowledge of such counsel, the Company has received no notice
          challenging the validity, scope or enforceability of any of the
          patents owned or exclusively licensed by the Company; and

               (viii) In addition, such counsel shall state that, in connection
          with the preparation of the Registration Statement and the Prospectus,
          such counsel has participated in conferences with officers


<PAGE>   14


                                      -14-


          and representatives of the Company, counsel for the Company, the
          Underwriters, counsel for the Underwriters and the independent
          accountants of the Company, at which conferences such parties
          discussed the contents of the Registration Statement and the
          Prospectus; and that, while the limitations inherent in the
          independent verification of factual matters and the character of
          determinations involved in the registration process are such that such
          counsel is not passing upon and does not assume any responsibility for
          the accuracy, completeness or fairness of the statements contained in
          the Registration Statement or the Prospectus, subject to the foregoing
          and based on such participation, no facts have come to the attention
          of such counsel which have caused such counsel to believe that the
          Registration Statement, at the time it became effective (but after
          giving effect to changes incorporated pursuant to Rule 430A under the
          Act), contained any untrue statement of a material fact or omitted to
          state any material fact required to be stated therein or necessary in
          order to make the statements therein not misleading (except that such
          counsel need not express such view with respect to the financial
          statements, including the notes and schedules thereto, or any other
          financial or accounting data included therein or excluded therefrom,
          or from the exhibits to the Registration Statement), or that the
          Prospectus, as of the date of such Prospectus and as of the Closing
          Date, contained or contains any untrue statement of a material fact or
          omitted or omits to state any material fact necessary in order to make
          the statements therein, in light of the circumstances under which they
          were made, not misleading (except that such counsel need not express
          such view with respect to the financial statements, including the
          notes and schedules thereto, or any other financial or accounting data
          included therein);

          (f) The Representatives shall have received from Testa, Hurwitz &
     Thibeault, LLP, counsel for the Underwriters, such opinion or opinions,
     dated such Closing Date, with respect to the incorporation of the Company,
     the validity of the Offered Securities delivered on such Closing Date, the
     Registration Statements, the Prospectus and other related matters as the
     Representatives may require, and the Company shall have furnished to such
     counsel such documents as they request for the purpose of enabling them to
     pass upon such matters.

          (g) The Representatives shall have received a certificate, dated such
     Closing Date, of the President or any Vice President and the Chief
     Financial Officer of the Company in which such officers, to the best of
     their knowledge after reasonable investigation, shall state that: the
     representations and warranties of the Company in this Agreement are true
     and correct; the Company has complied with all agreements and satisfied all
     conditions on its part to be performed or satisfied hereunder at or prior
     to such Closing Date; no stop order suspending the effectiveness of any
     Registration Statement has been issued and no proceedings for that purpose
     have been instituted or, to the Company's knowledge, are contemplated by
     the Commission; the Additional Registration Statement (if any) satisfying
     the requirements of subparagraphs (1) and (3) of Rule 462(b) was filed
     pursuant to Rule 462(b), including payment of the applicable filing fee in
     accordance with Rule 111(a) or (b) under the Act, prior to the time the
     Prospectus was printed and distributed to any Underwriter; and, subsequent
     to the dates of the most recent financial statements in the Prospectus,
     there has been no material adverse change, nor any development or event
     involving a prospective material adverse change, in the condition
     (financial or other), business, properties or results of operations of the
     Company and its subsidiaries taken as a whole except as set forth in or
     contemplated by the Prospectus or as described in such certificate.

          (h) The Representatives shall have received a letter, dated such
     Closing Date, of PricewaterhouseCoopers LLP which meets the requirements of
     subsection (a) of this Section, except that the specified date referred to
     in such subsection will be a date not more than three days prior to such
     Closing Date for the purposes of this subsection.

          (i) On or prior to the date of this Agreement, the Representatives
     shall have received lock-up letters from each of (i) the officers and
     directors of the Company, (ii) EMC and (iii) each other security holder of
     the Company who holds, in the aggregate, 13,000 shares or more of the
     Securities and each holder of options exercisable for 13,000 shares or more
     of the Securities (or any combination of shares and


<PAGE>   15


                                      -15-


     options that, in the aggregate assuming exercise of all such options,
     equals 13,000 or more shares of the Securities).

The Company will furnish the Representatives with such conformed copies of such
opinions, certificates, letters and documents as the Representatives reasonably
request. CSFBC may in its sole discretion waive on behalf of the Underwriters
compliance with any conditions to the obligations of the Underwriters hereunder,
whether in respect of an Optional Closing Date or otherwise.

     7. Indemnification and Contribution. (a) The Company will indemnify and
hold harmless each Underwriter, its partners, directors and officers and each
person, if any, who controls such Underwriter within the meaning of Section 15
of the Act, against any losses, claims, damages or liabilities, joint or
several, to which such Underwriter may become subject, under the Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in any Registration Statement,
the Prospectus, or any amendment or supplement thereto, or any related
preliminary prospectus, or arise out of or are based upon the omission or
alleged omission to state therein a material fact required to be stated therein
or necessary to make the statements therein not misleading, and will reimburse
each Underwriter for any legal or other expenses reasonably incurred by such
Underwriter in connection with investigating or defending any such loss, claim,
damage, liability or action as such expenses are incurred; provided, however,
that the Company will not be liable in any such case to the extent that any such
loss, claim, damage or liability arises out of or is based upon an untrue
statement or alleged untrue statement in or omission or alleged omission from
any of such documents in reliance upon and in conformity with written
information furnished to the Company by any Underwriter through the
Representatives specifically for use therein, it being understood and agreed
that the only such information furnished by any Underwriter consists of the
information described as such in subsection (b) below; and provided, further,
that with respect to any untrue statement or alleged untrue statement in or
omission or alleged omission from any preliminary prospectus, the indemnity
agreement contained in this subsection (a) shall not inure to the benefit of any
Underwriter from whom the person asserting any such losses, claims, damages or
liabilities purchased the Offered Securities concerned, to the extent that a
prospectus relating to such Offered Securities was required to be delivered by
such Underwriter under the Act in connection with such purchase and any such
loss, claim, damage or liability of such Underwriter results from the fact that
there was not sent or given to such person, at or prior to the written
confirmation of the sale of such Offered Securities to such person, a copy of
the Prospectus if the Company had previously furnished copies thereof to such
Underwriter.

     (b) Each Underwriter will severally and not jointly indemnify and hold
harmless the Company, its directors and officers and each other person, if any
who controls the Company within the meaning of Section 15 of the Act, against
any losses, claims, damages or liabilities to which the Company may become
subject, under the Act or otherwise, insofar as such losses, claims, damages or
liabilities (or actions in respect thereof) arise out of or are based upon any
untrue statement or alleged untrue statement of any material fact contained in
any Registration Statement, the Prospectus, or any amendment or supplement
thereto, or any related preliminary prospectus, or arise out of or are based
upon the omission or the alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, in each case to the extent, but only to the extent, that such untrue
statement or alleged untrue statement or omission or alleged omission was made
in reliance upon and in conformity with written information furnished to the
Company by such Underwriter through the Representatives specifically for use
therein, and will reimburse any legal or other expenses reasonably incurred by
the Company in connection with investigating or defending any such loss, claim,
damage, liability or action as such expenses are incurred, it being understood
and agreed that the only such information furnished by any Underwriter consists
of the following information in the Prospectus furnished on behalf of each
Underwriter: the concession and reallowance figures appearing in the fourth
paragraph, the discretionary sales figure in the sixth paragraph, and the
information relating to overallotment, stabilizing and other transactions in the
thirteenth paragraph under the caption "Underwriting".

     (c) Promptly after receipt by an indemnified party under this Section of
notice of the commencement of any action, such indemnified party will, if a
claim in respect thereof is to be made against the indemnifying party under
subsection (a) or (b) above, notify the indemnifying party of the commencement
thereof; but the omission so


<PAGE>   16


                                      -16-


to notify the indemnifying party will not relieve it from any liability which it
may have to any indemnified party otherwise than under subsection (a) or (b)
above. In case any such action is brought against any indemnified party and it
notifies the indemnifying party of the commencement thereof, the indemnifying
party will be entitled to participate therein and, to the extent that it may
wish, jointly with any other indemnifying party similarly notified, to assume
the defense thereof, with counsel satisfactory to such indemnified party (who
shall not, except with the consent of the indemnified party, be counsel to the
indemnifying party), and after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the
indemnifying party will not be liable to such indemnified party under this
Section for any legal or other expenses subsequently incurred by such
indemnified party in connection with the defense thereof other than reasonable
costs of investigation. No indemnifying party shall, without the prior written
consent of the indemnified party, effect any settlement of any pending or
threatened action in respect of which any indemnified party is or could have
been a party and indemnity could have been sought hereunder by such indemnified
party unless such settlement (i) includes an unconditional release of such
indemnified party from all liability on any claims that are the subject matter
of such action and (ii) does not include a statement as to, or an admission of,
fault, culpability or a failure to act by or on behalf of an indemnified party.

     (d) If the indemnification provided for in this Section is unavailable or
insufficient to hold harmless an indemnified party under subsection (a) or (b)
above, then each indemnifying party shall contribute to the amount paid or
payable by such indemnified party as a result of the losses, claims, damages or
liabilities referred to in subsection (a) or (b) above (i) in such proportion as
is appropriate to reflect the relative benefits received by the Company on the
one hand and the Underwriters on the other from the offering of the Securities
or (ii) if the allocation provided by clause (i) above is not permitted by
applicable law, in such proportion as is appropriate to reflect not only the
relative benefits referred to in clause (i) above but also the relative fault of
the Company on the one hand and the Underwriters on the other in connection with
the statements or omissions which resulted in such losses, claims, damages or
liabilities as well as any other relevant equitable considerations. The relative
benefits received by the Company on the one hand and the Underwriters on the
other shall be deemed to be in the same proportion as the total net proceeds
from the offering (before deducting expenses) received by the Company bear to
the total underwriting discounts and commissions received by the Underwriters.
The relative fault shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by the Company or the Underwriters and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
untrue statement or omission. The amount paid by an indemnified party as a
result of the losses, claims, damages or liabilities referred to in the first
sentence of this subsection (d) shall be deemed to include any legal or other
expenses reasonably incurred by such indemnified party in connection with
investigating or defending any action or claim which is the subject of this
subsection (d). Notwithstanding the provisions of this subsection (d), no
Underwriter shall be required to contribute any amount in excess of the amount
by which the total price at which the Securities underwritten by it and
distributed to the public were offered to the public exceeds the amount of any
damages which such Underwriter has otherwise been required to pay by reason of
such untrue or alleged untrue statement or omission or alleged omission. No
person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation. The Underwriters' obligations in
this subsection (d) to contribute are several in proportion to their respective
underwriting obligations and not joint.

     (e) The obligations of the Company under this Section shall be in addition
to any liability which the Company may otherwise have and shall extend, upon the
same terms and conditions, to each person, if any, who controls any Underwriter
within the meaning of the Act; and the obligations of the Underwriters under
this Section shall be in addition to any liability which the respective
Underwriters may otherwise have and shall extend, upon the same terms and
conditions, to each director of the Company, to each officer of the Company who
has signed a Registration Statement and to each person, if any, who controls the
Company within the meaning of the Act.

     8. Default of Underwriters. If any Underwriter or Underwriters default in
their obligations to purchase Offered Securities hereunder on either the First
or any Optional Closing Date and the aggregate number of shares of Offered
Securities that such defaulting Underwriter or Underwriters agreed but failed to
purchase does not exceed 10% of the total number of shares of Offered Securities
that the Underwriters are obligated to purchase on such


<PAGE>   17


                                      -17-


Closing Date, CSFBC may make arrangements satisfactory to the Company for the
purchase of such Offered Securities by other persons, including any of the
Underwriters, but if no such arrangements are made by such Closing Date, the
non-defaulting Underwriters shall be obligated severally, in proportion to their
respective commitments hereunder, to purchase the Offered Securities that such
defaulting Underwriters agreed but failed to purchase on such Closing Date. If
any Underwriter or Underwriters so default and the aggregate number of shares of
Offered Securities with respect to which such default or defaults occur exceeds
10% of the total number of shares of Offered Securities that the Underwriters
are obligated to purchase on such Closing Date and arrangements satisfactory to
CSFBC and the Company for the purchase of such Offered Securities by other
persons are not made within 36 hours after such default, this Agreement will
terminate without liability on the part of any non-defaulting Underwriter or the
Company, except as provided in Section 9 (provided that if such default occurs
with respect to Optional Securities after the First Closing Date, this Agreement
will not terminate as to the Firm Securities or any Optional Securities
purchased prior to such termination). As used in this Agreement, the term
"Underwriter" includes any person substituted for an Underwriter under this
Section. Nothing herein will relieve a defaulting Underwriter from liability for
its default.

     9. Survival of Certain Representations and Obligations. The respective
indemnities, agreements, representations, warranties and other statements of the
Company or their respective officers and of the several Underwriters set forth
in or made pursuant to this Agreement will remain in full force and effect,
regardless of any investigation, or statement as to the results thereof, made by
or on behalf of any Underwriter, the Company or any of their respective
representatives, officers or directors or any controlling person, and will
survive delivery of and payment for the Offered Securities. If this Agreement is
terminated pursuant to Section 8 or if for any reason the purchase of the
Offered Securities by the Underwriters is not consummated, the Company shall
remain responsible for the expenses to be paid or reimbursed by it pursuant to
Section 5 and the respective obligations of the Company and the Underwriters
pursuant to Section 7 shall remain in effect, and if any Offered Securities have
been purchased hereunder the representations and warranties in Section 2 and all
obligations under Section 5 shall also remain in effect. If the purchase of the
Offered Securities by the Underwriters is not consummated for any reason other
than solely because of the termination of this Agreement pursuant to Section 8
or the occurrence of any event specified in clause (iii), (iv) or (v) of Section
6(c), the Company will reimburse the Underwriters for all out-of-pocket expenses
(including fees and disbursements of counsel) reasonably incurred by them in
connection with the offering of the Offered Securities.

     10. Notices. All communications hereunder will be in writing and, if sent
to the Underwriters, will be mailed, delivered or telegraphed and confirmed to
the Representatives, c/o Credit Suisse First Boston Corporation, Eleven Madison
Avenue, New York, N.Y. 10010-3629, Attention: Investment Banking
Department--Transactions Advisory Group, or, if sent to the Company, will be
mailed, delivered or telegraphed and confirmed to it at McDATA Corporation, 310
Interlocken Parkway, Broomfield, CO 80021, Attention: Chief Executive Officer,
provided, however, that any notice to an Underwriter pursuant to Section 7 will
be mailed, delivered or telegraphed and confirmed to such Underwriter.

     11. Successors. This Agreement will inure to the benefit of and be binding
upon the parties hereto and their respective successors and the officers and
directors and controlling persons referred to in Section 7, and no other person
will have any right or obligation hereunder.

     12. Representation of Underwriters. The Representatives will act for the
several Underwriters in connection with this financing, and any action under
this Agreement taken by the Representatives jointly or by CSFBC will be binding
upon all the Underwriters.

     13. Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, but all such
counterparts shall together constitute one and the same Agreement.

     14. APPLICABLE LAW. THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES
OF CONFLICTS OF LAWS.


<PAGE>   18


                                      -18-


     The Company hereby submits to the non-exclusive jurisdiction of the Federal
and state courts in the Borough of Manhattan in The City of New York in any suit
or proceeding arising out of or relating to this Agreement or the transactions
contemplated hereby.


<PAGE>   19


                                      -19-


     If the foregoing is in accordance with the Representatives' understanding
of our agreement, kindly sign and return to the Company one of the counterparts
hereof, whereupon it will become a binding agreement between the Company and the
several Underwriters in accordance with its terms.


                                          Very truly yours,

                                          MCDATA CORPORATION


                                          By: ______________________________


The foregoing Underwriting Agreement
 is hereby confirmed and accepted as
 of the date first above written.


CREDIT SUISSE FIRST BOSTON CORPORATION
MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED.
DEUTSCH BANC ALEX. BROWN
   Acting on behalf of themselves and as the
         Representatives of the several Underwriters

By: CREDIT SUISSE FIRST BOSTON CORPORATION


     By: _________________________________


<PAGE>   20


                                   SCHEDULE A


                                                                    NUMBER OF
UNDERWRITER                                                      FIRM SECURITIES
-----------                                                      ---------------

Credit Suisse First Boston Corporation...........................

Deutsch Banc Alex. Brown.........................................

Merrill Lynch, Pierce, Fenner & Smith Incorporated...............















                                                                 ---------------

                           Total.................................
                                                                 ===============


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