EXHIBIT 10.6
                  SUBLEASE AND CONSENT TO SUBLEASE AGREEMENT
                           SECOND FLOOR OFFICE SPACE
                           3100 DE LA CRUZ BOULEVARD
                        SANTA CLARA, CALIFORNIA  95054

This agreement dated February 22, 1999 is entered into by and among Ramp
Networks, Inc. (hereinafter "Sublessor"), Analog Microelectronics, Inc.
(hereinafter "Sublessee") and Oxford Park Associates (hereinafter "Master
Lessor") as a Sublease and consent to sublease (hereinafter "Sublease") subject
to the terms and conditions of the Master Lease dated February 24,1998, entered
into by Ramp Networks, Inc. and Oxford Park Associates.  A copy of said Master
Lease is attached hereto, designated Exhibit A, and incorporated herein by this
reference.

1.   Premises

1.1  Sublessor hereby leases to Sublessee and Sublessee hereby hires from
     Sublessor, on and subject to the terms and conditions hereinafter set
     forth, the following described premises (hereinafter referred to as
     "Subleased Premises"), a portion of the rentable space on the second floor
     of 3l00 De La Cruz Boulevard, situated in the City of Santa Clara, County
     of Santa Clara, State of California (hereinafter the "Building") comprising
     3,197 rentable square feet of space.

1.2  In addition Sublessee shall have non-exclusive access to the public areas
     of the building and surrounding area including, but not limited to, the
     showers on the second floor and parking spaces in the parking lot.

2.   Term

2.1  The term of this Sublease (hereinafter "Term") shall start on April 1, 1999
     and terminate on March 31, 2001 unless earlier terminated pursuant to any
     provision hereof, or of the Master Lease.

2.2  Notwithstanding the above, Sublessor and Master Lessor will allow Sublessee
     to have access to the building as soon as is reasonably practical to
     install telephone lines, network wiring and other Sublessee provided
     infrastructure as agreed by the parties. Any Sublessee contractors will
     coordinate with Sublessor's contractors and Master Lessor's General
     Contractor for the above work.

     Sublessee shall install their own voice/data cabling, as well as provide
     any 220 electrical requirements at their own expense. All such installation
     shall be subject to pre-approval by the Sublessor, which shall not be
     unreasonably withheld.

2.3  Upon expiration of the Term or upon early termination of the Sublease,
     Sublessee shall immediately surrender the Subleased Premises in good
     condition to the Sublessor, normal wear and tear excepted. In addition,
     upon surrender of the Subleased Premises, Sublessee shall remove any of its
     trade fixtures and all its personal property from the Subleased Premises.

2.4  If the Subleased Premises remain in the possession of the Sublessee with
     the consent of the Sublessor after the Term has expired, the Sublessee
     shall be deemed to be occupying the Subleased Premises on a month to month
     basis with a monthly rent equal to the last Rent amount in effect. Such
     month to month occupancy shall be subject to the terms of this Sublease,
     and be subject to termination upon 30 days' written notice by either party.

2.5  If the Subleased Premises remain in the Sublessee's possession after the
     expiration of the Term without the consent of the Sublessor, or after early
     termination of the Sublease, the Sublessee's occupancy shall be deemed
     tenancy at sufferance and Sublessee shall be liable for monthly rent in the
     amount of two times the last Rent in effect.

 
2.6  At the end of the Sublease Term, Sublessor shall determine whether
     Sublessor requires the Subleased Premises for its own use. If the Sublessor
     decides to sublease the Subleased Premises, the Sublessor shall negotiate
     in good faith with the Sublessee to extend the sublease term, provided the
     Sublessee has not defaulted under the Sublease and such default remains
     uncured. The Sublessor shall provide three (3) months notice of their
     intent.

3.   Base Rent

3.1  Payment of rent shall be due and payable on the date of general occupancy.
     Rent shall be at the rate of $2.15 per rentable square foot. Sublessee
     shall pay to Sublessor without deduction, setoff, prior notice or demand,
     as rent for the Subleased Premises, equal monthly payments as shown below
     (hereinafter "Rent"):

     4/1/99 to 3/31/01    $6,873.55 per month

     in advance on the first day of each month of the Term hereof. In the event
     the payment of Rent is not received by the Sublessor by the first day of
     each month, the Sublessor shall send written notice of non-receipt of the
     payment. Sublessee shall have a grace period of five (5) days after receipt
     of the written notice to pay the Rent. If Sublessee does not pay the Rent
     within five days after receipt of the written notice, Sublessee shall have
     defaulted under this Sublease and be subject to the provisions of section 7
     of this Sublease.

     The above rent is based on rentable space of 3,197 square feet.

     If the date of general occupancy is not the first day of the month, or if
     the termination date is not the last day of the month, a pro rata portion
     of the monthly Rent shall be paid to the Sublessor at the then current rate
     for the fractional month during which the Sublease commences and/or
     terminates based on a 30-day month. Sublessee shall pay Sublessor on or
     before the occupancy date hereof the prorated sum due for the initial
     fractional month plus the sum due for the first full month of rent.

3.2  Services to the Subleased Premises shall be provided by the Master Lessor
     as per Article 6.00 of the Master Lease Agreement. Such services shall
     include heat, ventilation, cooling, janitorial services, electric power for
     normal lighting and small business office equipment (e.g. copiers, PC's,
     etc.), running water, and maintenance, repair and replacement as defined in
     the referenced Article of the Master Lease. Master Lessor covenants to
     furnish all those services to the Subleased Premises and to the Building
     agreed by Master Lessor to be provided pursuant to Article 6.0 of the
     Master Lease.

4.   Security Deposit

     Sublessee shall deposit with Sublessor upon execution of this Sublease
     hereof the sum of $6,873.55 as security for Sublessee's faithful
     performance of Sublessee's obligations hereunder. If Sublessee fails to pay
     Rent or other charges due hereunder, or otherwise defaults with respect to
     any provision of this Sublease, and fails to commence a cure of such
     default within the time provided therefor in this Sublease, Sublessor may
     use, apply or retain all or any portion of said deposit for the payment of
     any Rent or other charge in default or for the payment of any other sum
     which Sublessor may become obligated by reason of Sublessee's default, or
     to compensate Sublessor for any loss or damage which Sublessor may suffer
     thereby. If Sublessor so uses or applies all or any portion of said
     deposit, Sublessee shall within ten (10) days after written demand
     therefore, deposit cash with Sublessor in an amount sufficient to restore
     said deposit to the full amount herein above stated, and Sublessee's
     failure to do so shall be a default under this Sublease, and Sublessor may
     at its option terminate this Sublease. Sublessor shall not be required to
     keep said deposit separate from its general accounts. If Sublessee performs
     all of Sublessee's obligations hereunder, said deposit, or so much thereof
     as has not theretofore been applied by Sublessor, shall be returned without
     payment of interest for its use to Sublessee within ten (10) days after the
     expiration of the Term hereof, or after Sublessee has vacated the Subleased
     Premises, whichever is later.

                                      -2-

 
     Sublessee's Security deposit shall not bear interest.

5.   Use

5.1  The Subleased Premises shall be used and occupied for general office and
     R&D purposes, including light assembly and prototyping, and for no other
     purpose without prior written consent of Sublessor.

5.2  Master Lessor warrants to Sublessee that the Subleased Premises, in its
     intended state, but without regard for Sublessee's stated use, does not
     violate any applicable statute, law, deed restrictions, building code,
     regulation or ordinance, including the Americans With Disabilities Act (42
     USC Sec. 12111 et. Seq.), at the time that this Sublease is executed. If
     this warranty hereafter is found not to be true, Sublessor shall work with
     the Master Lessor to bring the Subleased Premises into compliance.

     Sublessee shall, at Sublessee's expense, comply promptly with all
     applicable statutes, ordinances, rules, regulations, orders, restrictions
     of record, and requirements in effect during the Term hereof regulating the
     use of the Subleased Premises, provided, however, that Sublessee shall not
     be required to expend any of its funds for capital improvements or changes
     related to the Americans with Disabilities Act.

5.3  Except for latent and undisclosed defects, Sublessee hereby accepts the
     Subleased Premises in their condition existing as of the commencement date
     of the Term hereof, subject to all applicable zoning, municipal, county and
     state laws, ordinances and regulations governing and regulating the use of
     Subleased Premises, and accepts this Sublease subject thereto.

5.4  Sublessee acknowledges that neither Sublessor nor Sublessor's agents have
     made any representation or warranty as to the suitability of the Subleased
     Premises for the conduct of the Sublessee's business.

5.5  Sublessee shall not assign or transfer the Sublease, or otherwise allow
     occupancy in whole or in part of the Subleased Premises by any other party
     without advance written consent from the Sublessor.

5.6  Sublessee shall keep the Subleased Premises in good condition.  In the
     event the Sublessee fails to maintain the Subleased Premises, the Sublessor
     may, following no less than 48 hours' prior notice, enter the Subleased
     Premises, perform any needed repairs or maintenance, and charge the
     Sublessee for the cost incurred plus a 20% administrative fee. Any such
     entry into the Subleased Premises by the Sublessor, except in case of
     emergency, shall be as accompanied by an employee or designated
     representative of the Sublessee.

5.7  Sublessee shall obtain prior approval from the Sublessor for any
     alterations to the Subleased Premises.  Sublessor shall, in turn, obtain
     prior written approval from the Master Lessor.  All requested alterations
     will be at Sublessee's expense.

5.8  Sublessee may store very small amounts of hazardous materials in its
     hardware lab including solder, flux, alcohol, tech spray, flux cleaner etc.
     Except for these Hazardous Materials, Sublessee shall not use, generate,
     store, dispose or otherwise allow Hazardous Materials to be present within
     the Subleased Premises without prior written approval by the Sublessor.
     Except with respect to any such Hazardous Materials used, generated, stored
     or disposed of, on or about the Subleased Premises by Sublessee, its
     employees, officers, directors, agents or contractors, Sublessor shall
     indemnify, defend, and hold Sublessee harmless from and against any and all
     liabilities, remediation costs, investigation costs, claims, damages,
     injuries, losses, costs, fines, judgments, causes of action and expenses
     whatsoever incurred in connection with or arising in any way out of the
     release, treatment, storage, use or disposal of Hazardous Materials on or
     about the Subleased Premises.

                                      -3-

 
6.   Master Lease

6.1  This Sublease is subject and subordinate to the Master Lease designated as
     Exhibit A.  Sublessee shall not commit or permit to be committed on the
     Subleased Premises any act or omission which shall violate any term or
     condition of the Master Lease.

6.2  Sublessee shall hold Sublessor and Master Lessor harmless of and from all
     liability, judgements, costs, damages, claims or demands, including
     reasonable attorney's fees, arising out of Sublessee's failure to comply
     with or perform Sublessee's obligations under both the Master Lease and
     this Sublease, as such obligations apply to the Premises.

6.3  Sublessor represents to Sublessee that the Master Lease is in full force
     and effect and that no default exists on the part of any party to the
     Master Lease.

7.   Default

7.1  Sublessee shall pay a penalty of 5% of the Rent amount due as a late fee in
     the event Rent payments are received by the Sublessor more than 10 days
     after the due date for the Rent. If the Sublessor does not receive the Rent
     payment within 15 days after its due date, then the Sublessee shall owe
     interest on the amount due at an interest rate that is the lesser of one
     and one-half percent (1.5%) per month, or the maximum rate allowed by law,
     on all Rent not paid when due, from the due date until the payment is fully
     paid and satisfied. Sublessee shall indemnify Sublessor and Master Lessor
     against all costs and charges (including legal fees) lawfully and
     reasonably incurred in enforcing payment of the Rent, and in obtaining
     possession of the Subleased Premises after default of the Sublessee or upon
     expiration or earlier termination of the Term of this sublease.

7.2  All covenants and agreements to be performed by the Sublessee under any of
     the terms of this Sublease shall be performed by the Sublessee at
     Sublessee's sole cost and expense, and without any abatement of Rent. If
     Sublessee fails to perform any act on its part to be performed hereunder,
     and such failure shall continue for 10 days after notice thereof from
     Sublessor, Sublessor may perform such act (but shall not be obligated to do
     so) without waiving or releasing Sublessee from any of its obligations
     relative thereto. All reasonable sums paid or costs incurred by Sublessor
     in so performing such acts together with interest thereon at the rate set
     in paragraph 7.1 herein from the date payment was made or each cost
     incurred by the Sublessor shall be payable by Sublessee to Sublessor on
     demand.

7.3  The following events shall be deemed events of default by Sublessee under
     this Sublease:
     (a) part or all of the Rent is not paid when due and Sublessee has not paid
         the Rent within five (5) days after receipt of a written notice from 
         the Sublessor, or
     (b) Sublessee becomes insolvent or commits an act of bankruptcy or becomes
         bankrupt or takes benefit of any statute that may be in force for
         bankrupt or insolvent debtors or becomes involved in involuntary or
         involuntary winding-up proceedings or if a receiver is appointed for 
         the business, property, affairs or revenues of Sublessee, or
     (c) Sublessee ceases to conduct business from the Subleased Premises, or
     (d) Sublessee fails to observe, perform, and keep each and every material
         covenant, agreement, provision, stipulation and condition herein
         contained to be observed, performed, and kept by Sublessee.

7.4  Upon the occurrence of any event of default by Sublessee, Sublessor shall
     have, in addition to other remedies available to Sublessor at law or in
     equity, the option to pursue any one or more of the following remedies
     (each and all of which shall be cumulative and non-exclusive) without any
     notice or demand whatsoever:

     (a) Terminate this Sublease, in which case Sublessee shall immediately
         surrender the Subleased Premises to Sublessor, and if Sublessee fails
         to do so, Sublessor may enter and take possession of the Subleased
         Premises and expel or remove the Sublessee and any other person who may
         be occupying the 

                                      -4-

 
         Subleased Premises or any part thereof, without being liable for
         prosecution or any claim or damages therefore; and Sublessor may
         recover from Sublessee the following:

         (i)   the worth at the time of award of any unpaid Rent which has been
               earned at the time of termination, plus
         (ii)  the worth at the time of award of the amount by which the unpaid
               Rent which would have been earned after termination until the
               time of award exceeds the amount of such loss of Rent that
               Sublessee proves could have been reasonably avoided; plus
         (iii) the worth at the time of award by which the unpaid Rent for the
               balance of the Term after the time of award exceeds the amount of
               such loss of rent that Sublessee proves could have been
               reasonably avoided; plus
         (iv)  any other amount necessary to compensate Sublessor for all the
               detriment proximately caused by Sublessee's failure to perform
               its obligations under this Sublease; and
         (v)   at Sublessor's election, such other amounts in addition to or in
               lieu of the foregoing as may be permitted from time to time by
               applicable law.

     (b) If Sublessor does not elect to terminate this Sublease on account of
         any default by Sublessee, Sublessor may, from time to time, without
         terminating this Sublease, enforce all of its rights and remedies under
         this Sublease, including the right to recover all Rent as it becomes
         due.

     (c) If the Sublessee defaults under this agreement, Sublessor shall have
         the right to terminate any and all subleases, licenses, concessions or
         other arrangements for possession entered into by Sublessee and
         affecting the Subleased Premises or may, in Sublessor's sole
         discretion, succeed to Sublessee's interest in such subleases,
         licenses, concessions or arrangements. In the event of Sublessor's
         election to succeed to Sublessee's interest in any such subleases,
         licenses, concessions or arrangements, Sublessee shall, as of the date
         of notice by Sublessor of such election, have no farther right to or
         interest in the rent or other consideration receivable thereunder.

8.   Liability and Damages

     Sublessee shall maintain at its own expense liability and fire insurance
     covering the Subleased Premises and its improvements and personal property
     residing there in an amount not less than acceptable to a prudent owner.
     Sublessee's liability insurance shall include Sublessor and Master Lessor
     as insured parties, and cover death, personal injury and property damage in
     the amount of $1 million per occurrence and $3 million cumulative.

     If the Subleased Premises become unusable due to damage by fire or other
     casualty, then Article 16.00 of the Master Lease shall apply to the
     relationship between the Sublessor and Sublessee as well.
  
9.   Arbitration of Disputes

     MEDIATION OF DISPUTES.  Sublessee and Sublessor hereby agree to and shall
     ---------------------                                                    
     mediate any dispute or claim between them arising out of this Sublease or
     any resulting transaction. The mediation shall be held prior to any court
     action or arbitration. The mediation shall be confidential and in
     accordance with California Evidence Code # 1152.5. If the parties are
     unable to agree on a mediator within thirty (30) days of written notice by
     one party to the other of said party's desire to seek mediation, the
     Presiding Judge of the Superior Court of Santa Clara County shall have
     jurisdiction to appoint a mediator. If the mediator determines that
     additional mediation sessions are warranted, such mediation sessions shall
     be conducted in accordance with this Article. Should either party attempt
     an arbitration or a court action before attempting to mediate, said party
     shall not be entitled to attorney's fees that might otherwise be payable to
     said party in a court action or arbitration, and such party may, in
     addition, be subject to sanctions by the arbitrator or judge who determines
     that said party has resisted mediation. Mediation fees, if any, shall be
     divided equally by the parties.

                                      -5-

 
     ARBITRATION OF DISPUTES.  Subject to the foregoing Paragraph, Sublessee and
     -----------------------                                                    
     Sublessor agree that any dispute relating to this Sublease shall be subject
     to neutral, binding arbitration and not by court action, unless this
     Sublease expressly states that such dispute is not subject to arbitration
     or the parties subsequently agree not to submit the dispute to arbitration.

     The arbitration shall be conducted in accordance with the rules of either
     the American Arbitration Association (`AAA') or Judicial Arbitration and
     Mediation Services, Inc./Endispute (`JAMS/Endispute').  The selection shall
     be made by the party first filing for arbitration.  The parties to an
     arbitration may agree in writing to use different rules and/or arbitrators.
     In all other respects, the arbitration shall be conducted in accordance
     with Part III, Title 9 (beginning with Section 1280) of the California Code
     of Civil Procedure. The arbitration shall be held in San Mateo County,
     California. Subject to the provisions of this Lease, an award of the
     arbitrator selected by the parties or by the court shall be final and
     binding upon the parties hereto and judgment may be entered upon it in a
     court having jurisdiction pursuant to Section 36.E. hereof. The expenses of
     such arbitration shall be borne equally by Sublessor and Sublessee. In any
     arbitration under this Lease the parties shall be entitled to discovery in
     like manner as if the matter were a California Superior Court trial.

     NOTICE: BY INITIALING IN THE SPACE BELOW YOU ARE AGREEING TO HAVE ANY
     DISPUTE ARISING OUT OF THE MATTERS INCLUDED IN THE "ARBITRATION OF
     DISPUTES" PROVISION DECIDED BY NEUTRAL ARBITRATION AS PROVIDED BY
     CALIFORNIA LAW AND YOU ARE GIVING UP ANY RIGHTS YOU MIGHT POSSESS TO HAVE
     THE DISPUTE LITIGATED IN A COURT OR JURY TRIAL. BY INITIALING IN THE SPACE
     BELOW YOU ARE GIVING UP YOUR JUDICIAL RIGHTS TO DISCOVERY AND APPEAL,
     UNLESS SUCH RIGHTS ARE SPECIFICALLY INCLUDED IN THE "ARBITRATION OF
     DISPUTES" PROVISION. IF YOU REFUSE TO SUBMIT TO ARBITRATION AFTER AGREEING
     TO THIS PROVISION, YOU MAY BE COMPELLED TO ARBITRATE UNDER THE AUTHORITY OF
     THE CALIFORNIA CODE OF CIVIL PROCEDURE. YOUR AGREEMENT TO THIS ARBITRATION
     PROVISION IS VOLUNTARY. WE HAVE READ AND UNDERSTAND THE FOREGOING AND AGREE
     TO SUBMIT DISPUTES ARISING OUT OF THE MATTERS INCLUDED IN THE "ARBITRATION
     OF DISPUTES" PROVISION TO NEUTRAL ARBITRATION.

       Consent to neutral arbitration by:

     SUBLESSEE:  /s/ GC 2/17/99
               ----------------

     SUBLESSOR:  /s/ SG 2/17/99
               ----------------

10.  Notices

     All notices or demands of any kind required to be given by Sublessor or
     Sublessee hereunder shall be in writing and shall be deemed delivered 
     forty-eight (48) hours after depositing the notice or demand in the United
     States Mail, certified or registered, postage prepaid, addressed to
     Sublessor or Sublessee, respectively, at the addresses set forth after
     their signatures at the end of this Sublease. All Rent and other payments
     due under this Sublease or the Master Lease shall be made by Sublessee to
     Sublessor at the same address.

11. Broker's Fee

     The broker's fee has been pre-arranged and is part of a separate agreement
     between Ramp Networks, Inc. and CRESA Partners LLC.

12.  General

     Master Lessor and Sublessor acknowledge that as of the date hereof,
     Sublessor has not committed an event of default with respect to the Master
     Lease. The undersigned agrees that execution of this Sublease and

                                      -6-

 
     Sublessee's usage of the Subleased Premises for general office purposes
     will not cause a default in the Master Lease, and, further, the undersigned
     Landlord agrees that it shall recognize the Sublease and Sublessee's rights
     of possession, if Sublessee has not incurred an event of default with
     respect thereto, in the event the Master Lease is terminated for any
     reason. Neither Sublessor nor Sublessee are bound by the Sublease Agreement
     until the Landlord has executed the Sublease Agreement.

13. Entire Agreement

     This Sublease constitutes the entire agreement between Ramp Networks, Inc.
     and Analog Microelectronics, Inc. regarding this Sublease.  Both parties
     acknowledge that there are no agreements or understandings except as
     presented in this Sublease document.

14.  Relationship of the Parties

     Nothing contained in this Sublease shall create any relationship between
     the parties hereto other than that of Sublessor and Sublessee, and it is
     acknowledged and agreed that Sublessor does not in any way or for any
     purpose become a partner of Sublessee in the conduct of its business, or a
     joint venturer or a member of a joint or common enterprise with Sublessee.

15.  Severability

     If any provision of this Sublease or the application thereof to any person,
     entity or circumstance shall, to any extent, be invalid or unenforceable,
     the remainder of this Sublease, or the application of such provision to
     persons, entities or circumstances other than those as to which it is
     invalid or unenforceable, shall not be affected thereby, and each provision
     of this Sublease shall be valid and be enforced to the full extent
     permitted by law.

16.  Time of the Essence

     Time is hereby expressly declared to be of the essence of this Sublease and
     of each and every term, covenant, Agreement, condition and provision
     hereof.

17.  Sublease Construed as a Whole

     The language in all parts of this Sublease shall in all cases be construed
     as a whole according to its fair meaning and not strictly for or against
     either Sublessor or Sublessee. The parties acknowledge that each party and
     its counsel have reviewed this Sublease and participated in its drafting
     and therefore that the rule of construction that any ambiguities are to be
     resolved against the drafting party shall not be employed nor applied in
     the interpretation of this Sublease.

18.  Meaning of Terms

     Whenever the context so requires, the neuter gender shall include the
     masculine and the feminine, and the singular shall include the plural and
     vice versa.

19.  Forum

     This Sublease shall be construed and enforced in accordance with the laws
     of the State of California.

20.  Attorneys' Fees

     In the event of any action or proceeding at law, in equity or stipulated
     arbitration to enforce or interpret any provision of this Lease or to
     protect or establish any right or remedy of either party hereunder, the
     party not prevailing in such action or proceeding, whether in court,
     through arbitration or by way of out-of-court

                                      -7-

 
     settlement, shall pay to the prevailing party all costs and expenses,
     including without limitation, reasonable attorneys' fees and expenses
     (which shall include attorneys fees and expenses of in-house attorneys),
     incurred therein by such prevailing party and if such prevailing party
     shall recover judgment in any such action or proceeding, such costs,
     expenses and attorneys' fees shall be included in and as a part of such
     judgment.

     An arbitrator, if any, is hereby authorized to make such an award to the
     prevailing party in arbitration. The term "prevailing party" shall mean the
     party that received substantially the relief requested, whether by
     settlement, dismissal, summary judgment, mediation, arbitration, judgment
     or otherwise.

21.  No Memorandum Without Consent

     Neither Sublessor or Sublessee shall record this Sublease or a short form
     memorandum hereof without the consent of the other, not to be unreasonably
     withheld.

22.  Waiver

     The waiver by either party of a breach of any provision of this Sublease
     shall not be deemed a continuing waiver or a waiver of any subsequent
     breach, whether of a like nature or otherwise.

23.  In consideration of Sublessee's paying the rent and performing all the
     covenants, conditions and provisions on Sublessee's part to be observed and
     performed under this Sublease, Sublessee shall have quiet possession and
     quiet enjoyment of the Subleased Premises.

24.  If the Subleased Premises or any portion thereof are taken under the power
     of eminent domain or sold under the threat of the exercise of said power,
     either party shall have the right to terminate this Sublease upon written
     notice to the other.

25.  Nondisturbance

     In the event of a foreclosure sale under the Trust Deed or conveyance in
     lieu of such foreclosure so long as there shall not then exist any breach
     or default on the part of the Sublessee under the Sublease, or any event or
     condition which, with the giving of notice and/or the passage of time,
     could become such a breach or default, or any other event that would permit
     the Sublessee's leasehold interest under the Sublease to be terminated and
     subject to compliance by the Sublessee with the terms hereof,

     (a) the Sublessee's right to possession of the Leased Premises and
         leasehold interest under the Sublease shall not be disturbed and shall
         continue in effect, and

     (b) the purchaser or transferee shall recognize and accept the Sublessee as
         Sublessee under the terms of the purchaser in each case subject to the
         terms, requirements and provisions of the Sublease and those set forth
         herein.

26.  Default by the Sublessor:

     Upon the occurrence of any breach or default on the part of the Sublessor
     under the Sublease or any other event that would permit early termination
     nation of the Sublease by the Sublessee the Sublessee shall promptly (and
     in any event not later than the time that notice thereof is given by the
     Sublessee to the Sublessor) given written notice to the Bank and Master
     Lessor specifying the nature of such breach, default or other event and the
     action, if any, that the Sublessee proposes to take with respect thereto.
     The Bank shall have the right (but not the obligation) to cure any such
     breach, default or other event at any time prior to the termination of the
     Sublease by the Sublessee Anything contained herein or in the Sublease to
     the contrary notwithstanding, (a) the Sublessee shall not declare a
     termination of the ease as a result of any such breach, default or other
     event unless, within 30 days after the expiration of the time period
     provided in the Sublease for the cure thereof by the Sublessor or the
     Bank's receipt of notice thereof from the Sublessee (whichever is

                                      -8-

 
     later), the Bank shall have failed to cause such breach, default or other
     event to be cured or, if the same cannot reasonably be cured by the Bank
     within such 30-day period, the Bank shall have failed to commence action
     within 30-day period to cause the same to be cured or thereafter shall fail
     to pursue such cure with diligence, and (b) the Sublessee shall in no event
     terminate the Sublease as a result of any breach, default or other event,
     which relates solely the financial condition, status or condition of the
     Sublessor Except for a termination of the ease arising by reason of the
     Bank's failure to cause any breach, default or other event to be cured as
     set forth above, the Sublessee shall not terminate or permit any
     termination of the Sublease prior to the expiration of the term then
     remaining under the Sublease without the prior written consent of the Bank.

27.  Signage:

     Sublessee, at Sublessee's sole cost, will be allowed signage on the second
     floor at the entrance of their suite. All signage is subject to approval by
     the Sublessor and Master Landlord, not to be unreasonably withheld.
     Sublessor, at Sublessor's sole cost, will create entry signage on the first
     floor displaying names of all occupants in the building. No external
     signage shall be permitted.



Dated: 2/17/99                  Dated: 2/17/99
      ----------------------          ----------------------

Sublessor                       Sublessee


By: /s/ Scott Gorton            By: /s/ George Chen
   --------------------------      --------------------------

Address: Ramp Networks          Address: 3150 De La Cruz Blvd #200
        ---------------------           --------------------------
                                         Santa Clara, CA 95054
                                        --------------------------
         

Agreed and Accepted:

Landlord


By: /s/ [illigible]
   -------------------------

Date: 2/26/99
     -----------------------

                                      -9-