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                                                                   EXHIBIT 10.33

                             Cabletron Systems, Inc.

                                 August 2, 2001

Piyush Patel

Piyush:

This letter will reflect the agreement between you and Cabletron Systems, Inc.
(including its successor Enterasys Networks, the "Company") concerning your
provision of strategic advice and assistance to Aprisma, Enterasys and
Riverstone (the "Operating Companies") after September 2, 2001. This letter is
independent of and in addition to the letter between you and Cabletron Systems,
Inc. dated July 16, 2001.

PROJECTS You and either (i) Craig Benson, as the Board's representative, or (ii)
the CEOs of the Operating Companies, will determine by mutual agreement, the
projects to be performed by you.

AVAILABILITY From September 3 through December 31, 2001, in exchange for being
available at least 80 hours per month, you will receive weekly compensation of
$6,000. From January 1, 2002 through September 2, 2002, in exchange for being
available at least 10 hours per month, you will receive weekly compensation of
$3,000. For time spent on specific projects, your compensation will be
determined by mutual agreement between you and Craig Benson or the applicable
Operating Company. The applicable Operating Company will pay for or reimburse
you for all travel and other out-of-pocket business expenses. For projects on
behalf of Riverstone or Aprisma, that Operating Company will be responsible for
reimbursing the Company for the associated compensation. You will be maintained
on the Company's (or its successor Enterasys') employee benefit plans at no cost
to you, including full health, life and retirement plans offered to the senior
management of the Company, through September 2, 2002.

FACILITIES In order to facilitate your providing strategic assistance to
Enterasys, Riverstone and Aprisma, you will maintain your current offices and
facilities through at least December 31, 2001. The Company will make available
Wendi Fenderson or, if she is unavailable, a reasonably acceptable assistant to
provide full-time support to you and Eric Jaeger. In addition, you will retain
key card access to all facilities at the Operating Companies through at least
September 2, 2002 and the Company will continue to provide your current
telecommunications equipment and services, including cell phone service, company
telephone number, home business line, Cabletron email and Blackberry service
through at lest September 2, 2002.

SCHEDULE Your work schedule will be based upon the needs of the projects you
have agreed to perform, as reasonably determined by you. It is expressly
understood that you may conduct other activities unrelated to the business of
Enterasys, Aprisma and Riverstone to the extent permitted by the schedule of the
projects you have agreed to perform.

TERMINATION You may terminate this agreement on two weeks prior notice to the
Company.

                                        Cabletron Systems, Inc.

/s/ Piyush Patel                        By: /s/ Craig R. Benson
---------------------------                 ---------------------------------
Piyush Patel                                Craig R. Benson
                                            Director<PAGE>
                                                                   EXHIBIT 10.34

                             Cabletron Systems, Inc.

                                 August 2, 2001

Eric Jaeger
51 Evans Road
Madbury, NH  03820

Eric:

This letter will reflect the agreement between you and Cabletron Systems, Inc.
(including its successor Enterasys Networks, the "Company") concerning your
provision of strategic advice and assistance to Aprisma, Enterasys and
Riverstone (the "Operating Companies") after September 2, 2001. This letter is
independent of and in addition to the letter between you and Cabletron Systems,
Inc. dated July 16, 2001.

PROJECTS You and either (i) Craig Benson, as the Board's representative, or (ii)
the CEOs of the Operating Companies, will determine by mutual agreement, the
projects to be performed by you.

AVAILABILITY From September 3 through December 31, 2001, in exchange for being
available at least 80 hours per month, you will receive weekly compensation of
$3,000. From January 1, 2002 through September 2, 2002, in exchange for being
available at least 10 hours per month, you will receive weekly compensation of
$1,500. For time spent on specific projects, your compensation will be
determined by mutual agreement between you and Craig Benson or the applicable
Operating Company. The applicable Operating Company will pay for or reimburse
you for all travel and other out-of-pocket business expenses. For projects on
behalf of Riverstone or Aprisma, that Operating Company will be responsible for
reimbursing the Company for the associated compensation. You will be maintained
on the Company's (or its successor Enterasys') employee benefit plans at no cost
to you, including full health, life and retirement plans offered to the senior
management of the Company, through September 2, 2002.

FACILITIES In order to facilitate your providing strategic assistance to
Enterasys, Riverstone and Aprisma, you will maintain your current offices and
facilities through at least December 31, 2001. The Company will make available
Wendi Fenderson or, if she is unavailable, a reasonably acceptable assistant to
provide full-time support to you and Piyush Patel. In addition, you will retain
key card access to all facilities at the Operating Companies through at least
September 2, 2002 and the Company will continue to provide your current
telecommunications equipment and services, including cell phone service, company
telephone number, home business line, Cabletron email and Blackberry service
through at lest September 2, 2002.

SCHEDULE Your work schedule will be based upon the needs of the projects you
have agreed to perform, as reasonably determined by you. It is expressly
understood that you may conduct other activities unrelated to the business of
Enterasys, Aprisma and Riverstone to the extent permitted by the schedule of the
projects you have agreed to perform.

TERMINATION You may terminate this agreement on two weeks prior notice to the
Company.

                                            Cabletron Systems, Inc.

/s/ Eric Jaeger                             By: /s/ Piyush Patel
--------------------------------                --------------------------------
Eric Jaeger                                     Piyush Patel
                                                President and CEO<PAGE>
                                                                   EXHIBIT 10.35

                             Cabletron Systems, Inc.

                                 August 3, 2001

Piyush Patel

Piyush:

We have agreed that the terms below will govern your relationship with Cabletron
going forward. If these terms are acceptable to you, please sign and return a
copy of this letter to me, at which point it will become a binding agreement
between you and Cabletron.

     1.   CURRENT SALARY. You will be paid your current base salary through
          Sept. 2, 2001.

     2.   TRANSFORMATION BONUS. You will be paid a transformation bonus of
          $300,000 on Aug. 3, 2001. Subject to continued performance, you will
          receive your normal quarterly bonus of $150,000 for Q2.

     3.   ADDITIONAL COMPENSATION. We agree to pay you additional compensation
          equal to one year salary plus bonus. One-half of the Additional
          Compensation shall be paid on Aug. 3. The other half of the Additional
          Compensation will be paid to you on Jan 2, 2002; this amount shall be
          placed in an escrow account to be released to you on Jan. 2, 2002
          unless you have materially breached the confidentiality provision set
          forth below. At such time as you cease to be an employee of the
          Company, you will be paid a lump sum based upon your unused vacation
          time at your current base salary.

     4.   CONFIDENTIALITY. You agree not to disclose any material confidential
          information of the Company or its subsidiaries to any third parties
          under circumstances that one would reasonably expect to cause material
          harm to the Company or its subsidiaries.

     5.   STOCK OPTIONS. Your Cabletron stock options will be treated the same
          as other employees, that is, the vesting on you Cabletron stock
          options will be accelerated through Feb. 28, 2002 and you will receive
          Riverstone rainbow options using the same ratio used with respect to
          Cabletron stockholders. With respect to your Aprisma, Enterasys, and
          Riverstone stock options, the remaining restrictions that prevent the
          transfer of the shares issued on exercise of the options will be
          lifted as of Aug. 6. This will not affect the exercisability of the
          stock options.

                                            Cabletron Systems, Inc.

         /s/ Piyush Patel                   By: /s/ Craig Benson
         ------------------------               ------------------------------
         Piyush Patel                           Craig Benson
                                                Director<PAGE>
                                                                   EXHIBIT 10.36

                             Cabletron Systems, Inc.

                                 August 3, 2001

Eric Jaeger
51 Evans Road
Madbury, VT  03820

Eric:

We have agreed that the terms below will govern your relationship with Cabletron
going forward. If these terms are acceptable to you, please sign and return a
copy of this letter to me, at which point it will become a binding agreement
between you and Cabletron.

     1.   CURRENT SALARY. You will be paid your current base salary through
          Sept. 2, 2001.

     2.   TRANSFORMATION BONUS. You will be paid a transformation bonus of
          $100,000 on Aug. 3, 2001. Also on Aug. 3, 2001, you will receive your
          normal quarterly bonus of $48,000 for Q2 on Sept. 9.

     3.   ADDITIONAL COMPENSATION. We agree to pay you additional compensation
          equal to one year salary plus bonus. One-half of the Additional
          Compensation shall be paid on Aug. 3. The other half of the Additional
          Compensation will be paid to you on Jan 2. 2002; this amount shall be
          placed in an escrow account to be released on Jan. 2 unless you have
          materially breached the confidentiality provision set forth below. At
          such time as you cease to be an employee of the Company, you will be
          paid a lump sum based upon your unused vacation time at your current
          base salary.

     4.   CONFIDENTIALITY. You agree not to disclose any material confidential
          information of the Company or its subsidiaries to any third parties
          under circumstances that one would reasonably expect to cause material
          harm to the Company or its subsidiaries.

     5.   STOCK OPTIONS. Your Cabletron stock options will be treated the same
          as other employees, that is, the vesting on you Cabletron stock
          options will be accelerated through Feb. 28, 2002 and you will receive
          Riverstone rainbow options using the same ratio used with respect to
          Cabletron stockholders. With respect to your Aprisma, Enterasys, and
          Riverstone stock options, the remaining restrictions that prevent the
          transfer of the shares issued on exercise of the options will be
          lifted as of Aug. 6. This will not affect the exercisability of the
          stock options.

     6.   EXISTING LOAN. For purposes of your existing loan from Cabletron, as
          of August 6, 2001 you will be deemed to satisfy the conditions for
          complete forgiveness of the loan. You will not be required to repay
          any portion of the loan as a result of sales of Cabletron, Riverstone
          or Enterasys shares either prior to or after the date of this letter
          agreement.

                                                Cabletron Systems, Inc.

          /s/ Eric Jaeger                       By: /s/ Piyush Patel
          --------------------------                ---------------------------
          Eric Jaeger                               Piyush Patel
                                                    CEO and President

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