Document:

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                                                                   EXHIBIT 10.13

                AMENDMENT TO THE INRANGE TECHNOLOGIES CORPORATION
                    EXECUTIVE EVA INCENTIVE COMPENSATION PLAN

          Pursuant to Paragraph 14 of Section V of the Inrange Technologies
Corporation Executive EVA Incentive Compensation Plan (the "Plan"), Inrange
Technologies Corporation hereby amends the Plan in the following manner:

          1.   Effective May 1, 2001, Paragraph 6 of Section V is amended by the
addition of the following at the end thereof:

     "In order to receive any amounts provided under this Paragraph 6, a
     participant must execute a valid release and any other documents the
     Company may require. The Company may, in its sole discretion, waive the
     application of the preceding sentence with respect to all or any portion of
     any amount and with respect to any participant."

          IN WITNESS WHEREOF, this amendment was executed by the undersigned as
of the date shown below.

                                                INRANGE TECHNOLOGIES
                                                CORPORATION

Date: May 1, 2001                               /s/  Kenneth H. Koch
                                                -----------------------------

                                                By:   Kenneth H. Koch
                                                   --------------------------

                                                Its:  Vice President
                                                     ------------------------<PAGE>   1
                                                                   EXHIBIT 10.14

                           MEMORANDUM OF UNDERSTANDING

     This Memorandum of Understanding is entered into this 16 March 2001 (the
"Effective Date"), between QLogic Corporation, with its principal place of
business at 26600 Laguna Hills Drive, Aliso Viejo, California 92656 ("QLogic")
and Inrange Technologies Corporation, with its principal place of business at
100 Mt. Holly By-Pass, Lumberton, NJ 08048 ("Inrange").

                                    RECITALS

     A. QLogic has technical and business expertise in the area of fibre channel
ASIC development (collectively referred to as "F/C ASIC"), the development of
fibre channel input/output and switching modules and associated firmware and in
the marketing and support of products to the OEM channel and to its other
channel partners.

     B. Inrange has technical and business expertise in the development of
"director" class switch systems, including power, packaging, back-plane,
management software and associated firmware, the "RAS" functionality
(reliability, availability and serviceability) required of "director" class
products, and in the marketing and support of products to networking equipment
resellers, IT systems integrators and end-users.

     C. The parties, for their mutual benefit, will work with each other to
design, manufacture, sell and service fibre channel directors generally in
accordance with the following terms:

I.   CERTAIN DEFINITIONS

1.   "Fibre Channel Director" means a fibre channel switch system designed with
     the RAS functionality required of "director" class products, and that
     contains firmware, software, a graphical user interface management system,
     and various hardware components.

2.   "Director" means a 1Gb or 2Gb Inrange FC/9000 Fibre Channel Director.

3.   "Components" means the various hardware components that make up the 1Gb or
     2Gb Director, excluding the QLogic F/C ASICs. "Components" in the 1Gb
     Director include the FCM, FIO and FSW/FWI printed circuit boards
     ("blades"), power supplies, chassis, cabinet, back-plane, GBICs and other
     components. "Components" in the 2Gb Director include S-16 Blades, or as
     applicable, the FWI blade, power supplies, chassis, cabinet, back-plane,
     GBICs and other components.

4.   "FCM blade" means a printed circuit board in a Director that functions
     principally to control the operation of the Director and allow an operator
     to monitor and manage the operation of the Director.

                                      -1-
<PAGE>   2

5.   "FIO blade" means a printed circuit board in a Director that functions
     principally to receive and transmit fibre channel frames.

6.   "FSW blade" means a printed circuit board in a Director that functions
     principally to switch fibre channel frames.

7.   "FWI blade" means an [         ]* blade for use initially in [        ]*
     Directors

8.   "S-4 Chip" means QLogic's proprietary 1Gb F/C ASIC.

9.   "S-16 Chip " means QLogic's proprietary 2Gb F/C ASIC.

10.  "Fibre Channel Port Adapter" or "FCPA" means Inrange's 4 port Ficon/FC port
     adapter card containing one or more S-4 Chips.

11.  "S-4 Blade" means any FIO, FSW or FCPA blade that incorporates one or more
     S-4 Chips.

12.  "S-16 Blade" means any FIO or FSW blade that incorporates one or more S-16
     Chips.

13.  "1Gb Director" means a Director that uses one or more of S-4 Blades.

14.  "2Gb Director" means the next generation Director that will use one or more
     of QLogic's S-16 Blades and will be designed and built as set forth below.

15.  "Products" means Directors, Components and other products, designated by
     the parties from time to time, that are designed, manufactured, distributed
     and sold pursuant to the parties' collaborative efforts.

16.  "OEM" means the entities (to be identified by QLogic) that purchase the
     Products for resale under the OEM's name. The term "OEM" does not include
     [                   ]*.

17.  "OEM Directors" means any Director purchased by QLogic from Inrange for
     resale to an OEM.

18.  "EOL" means a Product's end-of-life program.

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -2-
<PAGE>   3

II.  1GB DIRECTOR

     A. Manufacturing; Pricing and Other Terms

19.  The 1Gb Director will be manufactured by Inrange, or a contract
     manufacturer chosen by Inrange and reasonably acceptable to QLogic.

20.  QLogic (or QLogic's approved distributors) will supply Inrange's
     requirements for S-4 Chips through the EOL for the 1Gb Director, and as
     necessary thereafter to enable Inrange to provide service or spares to its
     customers.

21.  Inrange will purchase its requirements of S-4 Chips from QLogic or QLogic's
     authorized distributors. The price to Inrange for S-4 Chips will not exceed
     the price currently charged Inrange by its S-4 Chip supplier, LSI, or the
     price charged to other QLogic customers purchasing S-4 Chips to its other
     customers purchasing the Components in substantially the same volumes and
     under similar terms of purchase. If QLogic's price to Inrange for the S-4
     Chips, at any time, exceeds the current price charged Inrange by LSI,
     Inrange will have the option, at its sole discretion to continue to
     purchase the S-4 Chips from QLogic, or to purchase the S-4 Chips from LSI,
     or LSI's authorized distributors.

22.  QLogic will not be restricted from selling the S-4 Chips to any other
     customer.

23.  QLogic will purchase the 1GB Director from Inrange at mutually agreed
     pricing and terms. QLogic will re-sell the 1GB Director only to its OEM
     customers. QLogic will refer to Inrange all other customers for the 1Gb
     Director.

     B. Intellectual Property Rights

24.  The IP rights and licenses of the parties, with respect to the 1Gb
     Director, the 1Gb Components and the S-4 Chip, and the extended credit and
     addressing facility "XCAF" will be as set forth in the attached Appendix A.

25.  Inrange will have a non-exclusive, non-transferable, license to use the S-4
     Chip, in the 1Gb Director in accordance with this Agreement; the license
     will extend after termination or expiration of this Agreement as the
     parties may agree to enable Inrange to provide service or spares to its
     customers.

26.  The parties agree to terminate the existing source code escrow agreements
     and execute new escrow agreements containing mutually agreed terms.

                                      -3-
<PAGE>   4

     C. Royalties

        (i) Royalty and Product Development Payments for 1Gb Director in 2001

27.  Inrange will pay royalties to QLogic on all Sales by Inrange of S-4 Blades
     (other than Sales to [   ]*). The term "Sales" means any revenue bearing
     transfer by Inrange of the S-4 Blades, either separately or incorporated
     into a Product, other than through a sale to [    ]*.

28.  [                            ]*.

29.  Royalties will accrue on the date of the Sale by Inrange.

30.  The royalty rates for the S-4 Blades are as follows;

                       [
                        -----------                      -----------

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

                                                                      ]*

31.  The royalty due to QLogic[                                          ]* is
     computed on a calendar quarter basis ("Quarter") per the following formula:

     [(i)

     (ii)

     (iii)                                                       ]*

32.  In addition to royalties, Inrange will pay QLogic a quarterly Product
     Development Charge ("P/D Charge") based on QLogic's achievement of the
     quarterly milestones ("Deliverables") as set forth below. QLogic will use
     its best commercial efforts to complete the Deliverables as set forth
     below, in accordance with the schedule set forth in the applicable FRD, and
     the P/D Charges will not be earned or payable unless and until the
     Deliverables are met. The Deliverables commence January 2001, and the first
     P/D Charge payment in connection therewith accrues at the end of 1Q/2001.

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -4-
<PAGE>   5

                                                         P/D Payment
               Quarter             Deliverables            ($000's)
               -------             ------------          -----------

[

                                                           ---------
                                                                   ]*

33.  QLogic will design and deliver the [ ]* Deliverables described above in
     accordance with mutually-agreed specifications as set forth in the
     Functional Requirements Document ("FRD") applicable to the development of
     this Firmware attached and incorporated by reference as Appendix B. QLogic
     will own all of the Deliverables described in paragraph 32. Inrange will
     have a perpetual, world-wide, non-exclusive, non-transferable, fully
     paid-up, royalty free right and license to these Deliverables for use on
     the Boards and Inrange Products as defined in Appendix A.

34.  Inrange will pay QLogic each Quarter, commencing at the end of Q1/2001, the
     greater of the Actual Payment for the Quarter and the applicable Minimum
     Quarterly Payment.

     (i)  "Actual Payment" in any Quarter means the Actual Royalty together with
          the applicable P/D Charge.

     (ii) "Minimum Quarterly Payment" in any Quarter means the Minimum Quarterly
          Royalty together with the applicable P/D Charge as follows:

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -5-
<PAGE>   6

[

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

                                                                             ]*

35.  Pursuant to section 3.2 of the Technology License Agreement Inrange and
     Ancor Communications, Inc. on 24 September 1998 (the "TLA"), Inrange
     pre-paid certain royalties, and in exchange therefore received a discount
     to be applied against future royalties [      ]*. The parties agree to
     cancel any remaining unused portion of this discount.

     (ii) Royalty and Product Development Payments for 1Gb Director beyond 2001

36.  The minimum payment payable from Inrange to QLogic in 2002 (the "2002
     Minimum Payment") is [      ]*. The 2002 Minimum Payment will be achieved
     through a combination of (a) 1Gb Royalty and Product Development payments,
     using a methodology similar to that employed in 2001 to achieve the 2001
     Minimum Payment; (b) supplemented by P/D Charges allocable to the further
     development of S-16 Blades; and, (c) other mutually agreed revenue sources,
     [                               ]*. The mix of product royalty, 1Gb and 2Gb
     P/D Charges and other revenue sources, and the timing and amount of the
     2002 Minimum Payments, will be determined by 10/15/01, based on the future
     Director delivery schedules and sales forecasts. The mix of the products
     and payment methodology is not material as long as the 2002 Minimum Payment
     is achieved.

     The 2002 Minimum Payment is based on Inrange achieving [      ]* in 2002
     Director revenue. Both parties recognize that, due to market uncertainties,
     and uncertainties in new product introductions and Component deliverables,
     the actual Inrange Director revenue may be lower than planned. If Director
     revenue falls below the current [      ]*, the 2002 Minimum Payment will be
     adjusted to 20% of the projected Inrange Director revenue for 2002. If the
     2002 Minimum Payment falls below [        ]*, the parties agree that the
     deliverables required in any then outstanding FRD documents may be reviewed
     and adjustments made to features and schedules required by the applicable
     FRDs to reflect then current market conditions.

37.  All royalties and P/D Charges will paid in U.S. Dollars, on a quarterly
     basis, within thirty (30) days of the end of each Quarter.

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -6-
<PAGE>   7
38.  Payments will be accompanied by a report which includes the following
     information and details pertaining to Sales of S-4 Blades:

     (i)   Serial Numbers and configurations (blades) of 1Gb Directors Sold to
           [   ]*

     (ii)  Serial Numbers and configurations (blades) of 1Gb Directors Sold to
           [     ]*

     (iii) Reconciliation to Revenue Reported.

39.  Inrange will keep adequate records of its Sales for a period of five years
     after the last Sale of 1Gb Directors or S-4 Blades. Inrange will provide
     such documentation (including source documents) and information as QLogic
     may reasonably require to substantiate the Sales by Inrange and the
     royalties due to QLogic.

40.  QLogic may, at its expense, and upon reasonable prior written notice, audit
     Inrange records to verify the accuracy of payments made by Inrange to
     QLogic. Inrange will receive a copy of the audit report. If the audit
     determines that Inrange owes QLogic payments in excess of ten percent of
     the audit cost, Inrange will bear a proportionate share of the cost of the
     audit in addition to payment of any amounts the audit determines as due to
     QLogic. Audits will not be conducted more than once in any consecutive
     twelve month period. Upon Inrange request, the audit will be performed by a
     mutually agreed third party auditor.

III. 2GB DIRECTOR

     A.  Development.
         -----------

41.  Each party will appoint one member of its management to act as the Project
     Director for development of the 2Gb Director.

42.  The parties will develop new blades for the 2Gb Director as follows:

     (i)  QLogic will design [                      ]*, in accordance with
         mutually-agreed specifications as set forth in the Functional
         Requirements Document ("FRD") applicable to the development of these
         blades attached and incorporated by reference as Appendix C. Each of
         these 2Gb blades to be developed will contain S-16 Chips. QLogic will
         work with Inrange to add software and hardware interfaces to add
         functionality directly to the 2Gb [     ]* blades. QLogic will own the
         design of the [      ]*, subject to Inrange's perpetual, world-wide,
         non-exclusive, non-transferable, and fully paid-up, royalty free right
         and license to the design for the Inrange Products incorporating QLogic
         technology.

     (ii) Inrange will develop the [      ]* for the 2Gb Director, and the [
                       ]* for the 1Gb and 2Gb Directors. Inrange will own the
          design of the [            ]*, exclusive of the QLogic software,
          firmware and other technology embedded therein.

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -7-
<PAGE>   8

43.  The parties will from time to time establish, through mutually agreed FRDs,
     a schedule of products to be developed, including [
                           ]*, pricing, design completion dates and prototype
     delivery dates for the [          ]* and other mutually agreed upon
     deliverables. The parties will review the FRDs quarterly and more
     frequently as they deem necessary. Each FRD will be a supplement to this
     Agreement. The parties will jointly provide the resources necessary to
     accomplish the product development set forth in an agreed FRD in accordance
     with the applicable schedule.

44.  Inrange will provide QLogic with such technical information pertinent to
     physical connectivity and functionality requirements for the [      ]* as
     QLogic may reasonably require in designing 2Gb [        ]* blades for the
     2Gb Director.

45.  QLogic will provide Inrange with such technical information pertinent to
     the S-16 Chip and the [         ]* as Inrange may reasonably require in
     designing [                ]*, and the 2Gb Director. Such information
     includes: [

                                                                 ]*.

46.  Each party will bear its own costs in the collaboration and development of
     the 2Gb Director, and each party will retain all ownership interest in its
     technical information disclosed to the other under this Agreement.

47.  QLogic will also license Inrange to use these S-16 Chip and [         ]*
     specifications and designs and, to the extent that Inrange uses the S-16
     Chip in the [       ]*, QLogic will provide the firmware object (binary)
     code. If a mutually agreed FRD to develop the FWI requires that Inrange be
     provided with S-16 Chip source code, QLogic will license the source code to
     Inrange pursuant to a separate software license containing commercially
     reasonable and mutually acceptable terms. In any event, Inrange will
     receive the licenses necessary to develop the [        ]* blades and to do
     further development of the [       ]* as required to improve, maintain and
     upgrade the 2Gb Director.

48.  The QLogic license will extend beyond termination or expiration of this
     Agreement as the parties may agree to enable Inrange to provide service or
     spares to its customers.

49.  The parties agree that, in developing Products, they will adhere to
     industry standards and assure interoperability. Each party may, at its
     expense, pursue its own interoperability testing provided that (a) it
     shares test plans and results, (b) accepts and supports the certifications
     of the other party, (c) any third party certifications

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -8-
<PAGE>   9

     from industry firms (i.e. Medusa, UNH, etc.) or alliance partners will be
     applicable to both parties for use in their sales, marketing and support
     efforts of Products.

     B.  Manufacturing

50.  The 2 Gb Director will be manufactured by Inrange, or a contract
     manufacturer chosen by Inrange and reasonably acceptable to QLogic.

51.  QLogic will supply Inrange's requirements of S-16 Blades for the 2Gb
     Director. The S-16 Blades will be manufactured by QLogic, or a contract
     manufacturer chosen by QLogic. Inrange will be entitled to manufacture the
     FWI blade, or have it manufactured by a contract manufacturer reasonably
     acceptable to QLogic.

     C.  Pricing of [                      ]*

52.  QLogic's prices for the [    ]* will be provided in the pricing Appendix D,
     [
                                                                 ]*.

53.  [

                                                                        ]*

54.  Inrange will provide, on QLogic's request, such information concerning its
     shipments of the 2Gb Directors and Components to the [       ]* as QLogic
     may reasonably require.QLogic may audit Inrange's records, as provided in
     paragraph 40, to verify sales [     ]* of 2Gb Directors and [      ]*.

55.  Inrange will keep adequate records relating to its sales to the [    ]*
     Market for a period of five years after the last sale of 2Gb Directors and
     Components.

56.  [                                                 ]*

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -9-
<PAGE>   10

     D.  Intellectual Property Rights

57.  QLogic retains all of the IP rights in its S-16 Chip, [      ]* and
     improvements thereto developed by it, regardless of which party pays NRE
     for their development. QLogic agrees that it will sell the [   ]* developed
     under this Agreement for incorporation into the 2Gb Director only to
     Inrange. QLogic may sell [    ]* separately only to OEMs as spares or
     upgrades.

58.  QLogic will not be restricted from selling the S-16 Chip, or blades
     incorporating the S-16 Chip, to its other customers, including other
     manufacturers of Fibre Channel Directors or switches; provided that QLogic
     agrees that the prices charged to Inrange for S-16 Chips, or blades
     incorporating S-16 Chips, will be no higher than those charged by QLogic to
     its other customers purchasing the S-16 Chips, or blades incorporating S-16
     Chips, for similar Director-class applications, in the same volumes and
     under similar terms of purchase.

59.  Inrange retains all of the IP rights in its 2Gb Director and Components
     developed by it[ ]* and improvements thereto developed by it, irrespective
     of which party pays the NRE associated with their development.

IV.  CERTAIN AGREEMENTS APPLICABLE TO ALL PRODUCTS

     A.  Product Sales

60.  QLogic will sell the Directors to OEMs exclusively, and market the Products
     to its Channel Partners.

61.  Inrange will sell the Directors to everyone other than OEMs.

62.  QLogic may purchase 2Gb Directors (other than 2Gb Directors containing [
          ]*) from Inrange for resale to OEMs, at [
          ]*. The price to QLogic for all 2Gb Directors containing the [      ]*
     will be mutually agreed.

63.  QLogic may purchase Components from Inrange to supply OEMs at Inrange's
     fully burdened cost (inclusive of contract manufacturer margins, if
     applicable) for the Components plus a fixed fee to be negotiated by the
     parties. The parties agree that the prices charged to QLogic for such
     Components will be no higher than those charged by Inrange to its other
     customers purchasing the Components in the same volumes and under similar
     terms of purchase.

64.  QLogic will be responsible for the warranty and warranty service to OEMs.
     Inrange will provide QLogic with its standard warranty.

65.  QLogic will bear the commission cost for its sales team in respect of OEM
     sales.

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -10-
<PAGE>   11

66.  Inrange will bear the commission cost for its sales team in respect of its
     sales of the Products.

67.  QLogic will market, and solicit sales of, the Products to its usual and
     customary resellers, distributors and systems integrators ("Channel
     Partners"), but Inrange will fill any Channel Partner orders for the
     Products (each a "referral sale").

68.  [

                           ]*

69.  All Directors, other than those sold to OEMs that have requested their own
     badging, will contain the Inrange logo. The parties will agree on an
     appropriate QLogic logo to affix to all of the Directors, indicating that
     the Directors incorporate QLogic ASICs or blades, as the case may be. The
     QLogic logo will be visible on the outside front of the Directors, directly
     beside or directly below the Inrange logo and no less than 50% of the size
     of the Inrange logo.

70.  Both the QLogic and Inrange sales teams will receive full quota commission
     for sales of directors to QLogic's Channel Partners. Each party will bear
     the commission cost for its respective sales team.

71.  Except as otherwise provided herein, each party will independently
     determine the sales price of the Products.

     B.  NRE's

72.  QLogic may request modifications to the Products from time to time to
     address perceived opportunities for the OEM market.

73.  Inrange will respond to the QLogic request in a timely manner and provide
     QLogic with (a) an estimate of the NRE charges associated with the
     proposal, (b) a schedule of the time required to implement the design
     change and commence manufacture of Products incorporating the modification
     and (c) an estimate of the cost impact the modification will have on the
     Product.

74.  QLogic (or its OEM customer) will pay for mutually agreed NRE charges
     associated with any QLogic-approved modification to the OEM Products.

75.  Inrange may also request QLogic make modifications to the Products from
     time to time to address perceived opportunities for the Products.

-------------------------
*  Omitted pursuant to an application for confidential treatment.

                                      -11-
<PAGE>   12

76.  QLogic will respond to the Inrange request in a timely manner and provide
     Inrange with (a) an estimate of the NRE charges associated with the
     proposal, (b) a schedule of the time required to implement the design
     change and commence manufacture of the blades incorporating the
     modification and (c) an estimate of the cost impact the modification will
     have on the Product.

77.  Inrange will pay for mutually agreed NRE charges associated with any
     Inrange approved modifications to the blades or the Products.

78.  The party who pays for the NRE associated with the development of any
     improvements to the other party's IP, receives a perpetual, world-wide,
     non-exclusive, non-transferable, fully paid-up, royalty free right and
     license to the improvements covered by that NRE.

     C. Product Service

79.  Inrange will offer product service, professional services and systems
     engineering (`SE") support for the Products and will be QLogic's preferred
     product service provider for those QLogic Channel Partners and OEM's that
     request a third party service provider.

80.  With certain Channel Partner and OEM accounts, the parties recognize that
     QLogic may prefer to be the primary product service and support provider,
     in which case, Inrange will offer to provide QLogic with product service
     and support, as a subcontractor, on its standard service terms.

81.  Inrange agrees to provide levels of services (LOS) equal to or better than
     the service Inrange provides to its largest end user customer. Inrange
     agrees to negotiate the minimum commitments for response time, spare parts,
     replacement times, management escalation process etc. with QLogic. Each
     party will, at mutually agreed times provide to the other information
     regarding the "field" status of Products, including actual field failure
     rates, number of problems reported, time to close and such other
     information as the parties may deem pertinent.

82.  QLogic will be paid a reasonable and customary commission (to be
     negotiated) on service contracts it procures for Inrange in connection with
     sales of the Products to the QLogic sales channel, but no commission will
     be paid to QLogic in connection with a service contract in which QLogic is
     providing primary support and subcontracting the service thereafter to
     Inrange, as provided in paragraph 80. The amount of the commission payments
     paid by Inrange will be no less than the service commissions that Inrange
     offers to its other service partners.

83.  Each party will promptly notify the other of any actual or potential design
     or manufacturing related defect in the Products.

                                      -12-
<PAGE>   13

84.  The  parties will explore whether Inrange can or should offer service and
     support for QLogic's HBAs and Edge Switches.

     D.  Marketing

85.  The parties will work together on a host of collaborative marketing
     initiatives, including trade shows, press releases, advertising campaigns,
     brochures and collateral materials to promote the Products, each other and
     the benefits of this collaborative arrangement.

86.  The parties will, to the extent permitted by law, present a unified "front"
     to the analyst community and marketplace generally with respect to the
     Director so that Product shipments, Product certifications,
     customer-install base, and market share statistics, are consistently
     reported regardless of the Director branding.

87.  Inrange will be responsible for integrating/certifying Directors for other
     than OEM markets and QLogic will provide reasonable assistance. The parties
     will work together for integrating and certifying Directors for OEM markets
     and for certifying interoperability of the Directors with other
     QLogic-branded products.

88.  The parties will work together to keep each other properly informed and
     support each other, for example by encouraging customers to consider the
     other's branded products, by jointly using "cross-reference accounts", and
     by keeping each other informed in advance of press releases relating to
     joint products, features and plans.

     E.  Miscellaneous Terms; Termination

89.  The term of this agreement will continue through the EOL of the Products.

90.  Either party may terminate this Agreement for default if the other fails to
     correct breach of this Agreement within a reasonable time after receipt of
     written notice of default. Upon termination for default, all right of the
     breaching party to use the technology of the other party will cease; except
     as necessary to enable the each party to continue to provide its customers
     with services or spares. Each party agrees to provide the other with such
     licenses as are reasonably necessary to fulfill service and support
     obligations to customers. This obligation shall survive any termination or
     expiration of this Memorandum of Understanding

91.  The parties may execute separate agreements which authorize Inrange to sell
     the QLogic HBA's and 2Gb edge switches and such other equipment and
     products as the parties may agree.

92.  All appendices and schedules are incorporated by reference.

                                      -13-
<PAGE>   14

93.  Inrange and QLogic will execute appropriate proprietary information
     non-disclosure agreements to protect proprietary information exchanged or
     disclosed under this agreement.

94.  This Memorandum of Understanding modifies, amends, or supersedes, as
     applicable: (a) the Technology License Agreement executed by Inrange and
     Ancor Communications, Inc. on 24 September 1998, including all amendments
     thereto ("TLA"), and (b) the Reseller Agreement executed by Inrange and
     Ancor Communications Inc. on 29 October 1999 including all amendments
     thereto (the "Reseller Agreement"), to the extent each is inconsistent with
     this Memorandum of Understanding.

95.  The parties will use their best efforts to prepare, within 90 days from the
     date hereof, such amendments to this Memorandum of Understanding and such
     supplemental agreements as the parties deem appropriate to further the
     understandings set forth herein, and terminate the TLA and the Reseller
     Agreement. Failure of the parties to reach agreement on these amendments
     and supplemental agreements will not affect the enforceability of this
     Memorandum of Understanding.

96.  California law, without regard to its choice of law provisions, will govern
     this Memorandum of Understanding, amendments thereto and any supplemental
     agreements.

     IN WITNESS WHEREOF, the parties have signed this Memorandum of
Understanding as of the 16 March, 2001.

QLOGIC CORPORATION                         INRANGE TECHNOLOGIES CORPORATION

By:  /s/ Mark Edwards                      By:  /s/ Gregory R. Grodhaus
    -------------------------------           ------------------------------

Name:    Mark Edwards                      Name:    Gregory R. Grodhaus
      -----------------------------              ---------------------------

Title:   SR. V.P.                          Title:   President and CEO
      -----------------------------              ---------------------------

                                      -14-

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