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                                                                     Exhibit 3.1

                            CERTIFICATE OF AMENDMENT
                  OF THE RESTATED ARTICLES OF INCORPORATION OF
                               CISCO SYSTEMS, INC.
                            A CALIFORNIA CORPORATION


               The undersigned, John T. Chambers and Larry R. Carter, hereby
certify that:

               ONE: They are the duly elected and acting President and
Secretary, respectively, of said corporation.

               TWO: The Restated Articles of Incorporation of said corporation,
filed on January 7, 1998, shall be amended as set forth in this Certificate of
Amendment.

               THREE: Section A of ARTICLE IV of the Restated Articles of
Incorporation is amended to read in its entirety as follows:

               "(A) CLASSES OF STOCK. This corporation is authorized to issue
        two classes of stock to be designated, respectively, "Common Stock" and
        "Preferred Stock." The total number of shares that the corporation is
        authorized to issue is Two Billion Seven Hundred Five Million
        (2,705,000,000) shares. Two Billion Seven Hundred Million
        (2,700,000,000) shares shall be Common Stock, par value of $0.001, and
        Five Million (5,000,000) shares shall be Preferred Stock.

               As of September 15, 1998, every two (2) shares of Common Stock
        outstanding are split into three (3) shares of Common Stock."

               FOUR: The foregoing Certificate of Amendment has been duly
approved by the Board of Directors of the Corporation.

               FIVE: The foregoing Certificate of Amendment of the Restated
Articles of Incorporation does not require shareholder approval pursuant to
Section 902(c) of the General Corporation Law of the State of California. No
shares of Preferred Stock are outstanding.


               IN WITNESS WHEREOF, the undersigned have executed this
Certificate of Amendment on August 19, 1998.

                                            ------------------------------
                                            John T. Chambers
                                            President


                                            ------------------------------
                                            Larry R. Carter
                                            Secretary


               The undersigned certify under penalty of perjury that they have
read the foregoing Certificate of Amendment and know the contents thereof, and
that the statements therein are true.

               Executed at San Jose, California, on August 19, 1998.


                                            ------------------------------
                                            John T. Chambers


                                            ------------------------------
                                            Larry R. Carter

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                       RESTATED ARTICLES OF INCORPORATION
                             OF CISCO SYSTEMS, INC.,
                            A CALIFORNIA CORPORATION



               The undersigned, John T. Chambers and Larry R. Carter, hereby
certifies that:

               ONE: They are the duly elected and acting President and
Secretary, respectively, of said corporation.

               TWO: The Restated Articles of Incorporation of said corporation
shall be amended and restated in its entirety to read in full as follows:

                                    ARTICLE I

               The name of this corporation is Cisco Systems, Inc.

                                   ARTICLE II

               The purpose of this corporation is to engage in any lawful act or
activity for which a corporation may be organized under the General Corporation
Law of California other than the banking business, the trust company business or
the practice of a profession permitted to be incorporated by the California
Corporations Code.

                                   ARTICLE III

               The liability of the directors of the corporation for monetary
damages shall be eliminated to the fullest extent permissible under California
law.

                                   ARTICLE IV

               (A) CLASSES OF STOCK. This corporation is authorized to issue two
classes of stock to be designated, respectively, "Common Stock" and "Preferred
Stock." The total number of shares that the corporation is authorized to issue
is Two Billion Four Hundred Five Million (2,405,000,000) shares. Two Billion
Four Hundred Million (2,400,000,000) shares shall be Common Stock, par value of
$0.001 and Five Million (5,000,000) shares shall be Preferred Stock.

               (B) RIGHTS, PREFERENCES AND RESTRICTIONS OF PREFERRED STOCK. The
Preferred Stock authorized by these Restated Articles of Incorporation may be
issued from time to time in series. The Board of Directors is hereby authorized
to fix or alter the rights, preferences, privileges and restrictions granted to
or imposed upon series of Preferred Stock,

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and the number of shares constituting any such series and the designation
thereof, or of any of them. Subject to compliance with applicable protective
voting rights that have been or may be granted to the Preferred Stock or any
series thereof in any Certificate of Determination or the corporation's Articles
of Incorporation ("Protective Provisions"), but notwithstanding any other rights
of the Preferred Stock or any series thereof, the rights, privileges,
preferences and restrictions of any such additional series may be subordinated
to, pari passu with (including, without limitation, inclusion in provisions with
respect to liquidation and acquisition preferences, redemption and/or approval
of matters by vote or written consent), or senior to any of those of any present
or future class or series of Preferred Stock or Common Stock. Subject to
compliance with applicable Protective Provisions, the Board of Directors also is
authorized to increase or decrease the number of shares of any series prior or
subsequent to the issue of that series, but not below the number of shares of
such series then outstanding. In case the number of shares of any series shall
be so decreased, the shares constituting such decrease shall resume the status
which they had prior to the adoption of the resolution originally fixing the
number of shares of such series.

               1. REPURCHASE OF SHARES. In connection with repurchases by this
corporation of its Common Stock pursuant to its agreements with certain of the
holders thereof, Sections 502 and 503 of the California General Corporation Law
shall not apply in whole or in part with respect to such repurchases.

               (C) COMMON STOCK.

               1. DIVIDEND RIGHTS. Subject to the prior rights of holders of all
classes of stock at the time outstanding having prior rights as to dividends,
the holders of the Common Stock shall be entitled to receive, when and as
declared by the Board of Directors, out of any assets of the corporation legally
available therefor, such dividends as may be declared from time to time by the
Board of Directors.

               2. LIQUIDATION RIGHTS. Subject to the prior rights of holders of
all classes of stock at the time outstanding having prior rights as to
liquidation, upon the liquidation, dissolution or winding up of the corporation,
the assets of the corporation shall be distributed to the holders of the Common
Stock.

               3. REDEMPTION. The Common Stock is not redeemable.

               4. VOTING RIGHTS. The holder of each share of Common Stock shall
have the right to one vote, and shall be entitled to notice of any shareholders'
meeting in accordance with the Bylaws of this corporation, and shall be entitled
to vote upon such matters and in such manner as may be provided by law.

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                                    ARTICLE V

               (A) The liability of the directors of the corporation for
monetary damages shall be eliminated to the fullest extent permissible under
California law.

               (B) The corporation is authorized to provide indemnification of
agents (as defined in Section 317 of the California Corporations Code) through
bylaw provisions, agreements with agents, vote of shareholders or disinterested
directors or otherwise, in excess of the indemnification otherwise permitted by
Section 317 of the California Corporations Code, subject only to applicable
limits set forth in Section 204 of the California Corporations Code with respect
to actions for breach of duty to the corporation and its shareholders.

                                   ARTICLE VI

               Shareholders of this corporation shall not be entitled to
cumulate their votes at any election of directors of this corporation. The
corporation's common stock is qualified for trading on the Nasdaq National
Market and there were at least 800 holders of its equity securities as of the
record date of the most recent annual shareholders meeting.

               THREE: The foregoing restatement of the Restated Articles of
Incorporation, as amended, has been duly approved by the Board of Directors of
said corporation and does not require shareholder approval pursuant to section
910(b) of the California Corporations Code.


               IN WITNESS WHEREOF, the undersigned have executed these Restated
Articles of Incorporation on the _____ of December 1997.



                                            ------------------------------------
                                            John T. Chambers, President



                                            ------------------------------------
                                            Larry R. Carter, Secretary


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               The undersigned certifies under penalty of perjury that they have
read the foregoing Restated Articles of Incorporation and know the contents
thereof, and that the statements therein are true.

               Executed at San Jose, California, on December ____, 1997.



                                            ------------------------------------
                                            John T. Chambers



                                            ------------------------------------
                                            Larry R. Carter

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                          CERTIFICATE OF DETERMINATION

                                       of

                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       of

                               CISCO SYSTEMS, INC.

                         (Pursuant to Section 401 of the
                       California General Corporation Law)

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


               John T. Chambers, President and Chief Executive Officer, and
David Rogan, Vice President, Treasurer and Assistant Secretary of Cisco Systems,
Inc., a corporation organized and existing under the General Corporation Law of
the State of California (hereinafter called the "Corporation"), do hereby
certify that the following resolution was adopted by the Board of Directors of
the Corporation as required by Section 401 of the General Corporation Law at a
meeting duly called and held on June 8, 1998 creating a series of 1,200,000
shares of Preferred Stock designated as Series A Junior Participating Preferred
Stock of which none has been issued:

               RESOLVED, that pursuant to the authority granted to and vested in
the Board of Directors of the Corporation (hereinafter called the "Board of
Directors" or the "Board") in accordance with the provisions of the Articles of
Incorporation, the Board of Directors hereby creates a series of Preferred
Stock, no par value (the "Preferred Stock"), of the Corporation and hereby
states the designation and number of shares, and fixes the relative rights,
preferences, and limitations thereof as follows:

               Series A Junior Participating Preferred Stock:

               Section 1. Designation and Amount. The shares of such series
shall be designated as "Series A Junior Participating Preferred Stock" (the
"Series A Preferred Stock") and the number of shares constituting the Series A
Preferred Stock shall be one million two hundred thousand (1,200,000). Such
number of shares may be increased or decreased by resolution of the Board of
Directors; provided, that no decrease shall reduce the number of shares of
Series A Preferred Stock to a number less than the number of shares then
outstanding plus the number of shares reserved for issuance upon the exercise of
outstanding options, rights or warrants or upon the conversion of any
outstanding securities issued by the Corporation convertible into Series A
Preferred Stock.


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               Section 2.  Dividends and Distributions.

               (A) Subject to the rights of the holders of any shares of any
        series of Preferred Stock (or any similar stock) ranking prior and
        superior to the Series A Preferred Stock with respect to dividends, each
        holder of a share of Series A Preferred Stock, in preference to the
        holders of shares of Common Stock, par value $.001 per share (the
        "Common Stock"), of the Corporation, and of any other junior stock,
        shall be entitled to receive, when declared by the Board of Directors
        out of funds legally available for the purpose, quarterly dividends
        payable in cash on the last day of March, June, September and December
        in each year (each such date being referred to herein as a "Quarterly
        Dividend Payment Date"), commencing on the first Quarterly Dividend
        Payment Date after the first issuance of a share or fraction of a share
        Series A Preferred Stock, in an amount per share (rounded to the nearest
        cent) equal to, subject to the provision for adjustment hereinafter set
        forth, Ten Thousand (10,000) times the aggregate per share amount of all
        cash dividends, and Ten Thousand (10,000) times the aggregate per share
        amount (payable in kind) of all non-cash dividends or other
        distributions, other than a dividend payable in shares of Common Stock
        or a subdivision of the outstanding shares of Common Stock (by
        reclassification or otherwise), declared on the Common Stock since the
        immediately preceding Quarterly Dividend Payment Date or, with respect
        to the first Quarterly Dividend Payment Date, since the first issuance
        of a share or fraction of Series A Preferred Stock. In the event the
        Corporation shall at any time declare or pay any dividend on the Common
        Stock payable in shares of Common Stock, or effect a subdivision or
        combination or consolidation of the outstanding shares of Common Stock
        (by reclassification or otherwise than by payment of a dividend in
        shares of Common Stock) into a greater or lesser number of shares of
        Common Stock, then in each such case the amount to which holders of
        shares of Series A Preferred Stock were entitled immediately prior to
        such event under clause (b) of the preceding sentence shall be adjusted
        by multiplying such amount by a fraction, the numerator of which is the
        number of shares of Common Stock outstanding immediately after such
        event and the denominator of which is the number of shares of Common
        Stock that were outstanding immediately prior to such event.

               (B) The Corporation shall declare a dividend or distribution on
        the shares of Series A Preferred Stock as provided in paragraph (A) of
        this Section immediately after it declares a dividend or distribution on
        the Common Stock (other than a dividend payable in shares of Common
        Stock); provided, however, that, in the event no dividend or
        distribution shall have been declared on the Common Stock during the
        period between any Quarterly Distribution Date and the next subsequent
        Quarterly Dividend Payment Date, a dividend of $.000001 per share of
        Series A Preferred Stock shall nevertheless be payable on such
        subsequent Quarterly Dividend Payment Date.

               (C) Dividends shall begin to accrue and be cumulative on each
        outstanding


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        share of Series A Preferred Stock from the Quarterly Dividend Payment
        Date next preceding the date of issue of such share of Series A
        Preferred Stock, unless the date of issue of such share is prior to the
        record date for the first Quarterly Dividend Payment Date, in which case
        dividends on such share shall begin to accrue from the date of issue of
        such share, or unless the date of issue is a Quarterly Dividend Payment
        Date or is a date after the record date for the determination of holders
        of shares of Series A Preferred Stock entitled to receive a quarterly
        dividend and before such Quarterly Dividend Payment Date, in either of
        which events such dividends shall begin to accrue and be cumulative from
        such Quarterly Dividend Payment Date. Accrued but unpaid dividends shall
        not bear interest. Dividends paid on the shares of Series A Preferred
        Stock in an amount less than the total amount of such dividends at the
        time accrued and payable on such shares shall be allocated pro rata on a
        share-by- share basis among all such shares at the time outstanding. The
        Board of Directors may fix a record date for the determination of
        holders of shares of Series A Preferred Stock entitled to receive
        payment of a dividend or distribution declared thereon, which record
        date shall be not more than 60 days prior to the date fixed for the
        payment thereof.

               Section 3. Voting Rights. The holders of shares of Series A
Preferred Stock shall have the following voting rights:

               (A) Subject to the provision for adjustment hereinafter set
        forth, each share of Series A Preferred Stock shall entitle the holder
        thereof to Ten Thousand (10,000) votes on all matters submitted to a
        vote of the shareholders of the Corporation. In the event the
        Corporation shall at any time declare or pay any dividend on the Common
        Stock payable in shares of Common Stock, or effect a subdivision or
        combination or consolidation of the outstanding shares of Common Stock
        (by reclassification or otherwise than by payment of a dividend in
        shares of Common Stock) into a greater or lesser number of shares of
        Common Stock, then in each such case the number of votes per share to
        which holders of shares of Series A Preferred Stock were entitled
        immediately prior to such event shall be adjusted by multiplying such
        number by a fraction, the numerator of which is the number of shares of
        Common Stock outstanding immediately after such event and the
        denominator of which is the number of shares of Common Stock that were
        outstanding immediately prior to such event.

               (B) Except as otherwise provided herein, in any other Certificate
        of Determination creating a series of Preferred Stock or any similar
        stock, or by law, the holders of shares of Series A Preferred Stock and
        the holders of shares of Common Stock and any other capital stock of the
        Corporation having general voting rights shall vote together as one
        class on all matters submitted to a vote of shareholders of the
        Corporation.

               (C) Except as set forth herein, or as otherwise provided by law,
        holders of


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        Series A Preferred Stock shall have no special voting rights and their
        consent shall not be required (except to the extent they are entitled to
        vote with holders of Common Stock as set forth herein) for taking any
        corporate action.

               Section 4.  Certain Restrictions.

               (A) Whenever quarterly dividends or other dividends or
        distributions payable on the Series A Preferred Stock as provided in
        Section 2 are in arrears, thereafter and until all accrued and unpaid
        dividends and distributions, whether or not declared, on shares of
        Series A Preferred Stock outstanding shall have been paid in full, the
        Corporation shall not:

                    (i) declare or pay dividends, or make any other
               distributions, on any shares of stock ranking junior (either as
               to dividends or upon liquidation, dissolution or winding up) to
               the Series A Preferred Stock;

                    (ii) declare or pay dividends, or make any other
               distributions, on any shares of stock ranking on a parity (either
               as to dividends or upon liquidation, dissolution or winding up)
               with the Series A Preferred Stock, except dividends paid ratably
               on the shares of Series A Preferred Stock and all such parity
               stock on which dividends are payable or in arrears in proportion
               to the total amounts to which the holders of all such shares are
               then entitled;

                    (iii) redeem or purchase or otherwise acquire for
               consideration shares of any stock ranking junior (either as to
               dividends or upon liquidation, dissolution or winding up) to the
               Series A Preferred Stock, provided that the Corporation may at
               any time redeem, purchase or otherwise acquire shares of any such
               junior stock in exchange for shares of any stock of the
               Corporation ranking junior (either as to dividends or upon
               dissolution, liquidation or winding up) to the Series A Preferred
               Stock; or

                    (iv) redeem or purchase or otherwise acquire for
               consideration any shares of Series A Preferred Stock, or any
               shares of stock ranking on a parity with the Series A Preferred
               Stock, except in accordance with a purchase offer made in writing
               or by publication (as determined by the Board of Directors) to
               all holders of such shares upon such terms as the Board of
               Directors, after consideration of the respective annual dividend
               rates and other relative rights and preferences of the respective
               series and classes, shall determine in good faith will result in
               fair and equitable treatment among the respective series or
               classes.


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               (B) The Corporation shall not permit any subsidiary of the
        Corporation to purchase or otherwise acquire for consideration any
        shares of stock of the Corporation unless the Corporation could, under
        paragraph (A) of this Section 4, purchase or otherwise acquire such
        shares at such time and in such manner.

               Section 5. Reacquired Shares. Any shares of Series A Preferred
Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and cancelled promptly after the acquisition
thereof. All such shares shall upon their cancellation become authorized but
unissued shares of Preferred Stock and may be reissued as part of a new series
of Preferred Stock subject to the conditions and restrictions on issuance set
forth herein, in the Articles of Incorporation, or in any other Certificate of
Determination creating a series of Preferred Stock or any similar stock or as
otherwise required by law.

               Section 6.  Liquidation, Dissolution or Winding Up.

               (A) Upon any liquidation, dissolution or winding up of the
Corporation, no distribution shall be made (1) to the holders of shares of stock
ranking junior (either as to dividends or upon liquidation, dissolution or
winding up) to the Series A Preferred Stock unless, prior thereto, the holders
of shares of Series A Preferred Stock shall have received Ten Thousand Dollars
($10,000) per share, plus an amount equal to accrued and unpaid dividends and
distributions thereon, whether or not declared, to the date of such payment,
provided that the holders of shares of Series A Preferred Stock shall be
entitled to receive an aggregate amount per share, subject to the provision for
adjustment hereinafter set forth, equal to 10,000 times the aggregate amount to
be distributed per share to holders of shares of Common Stock, or (2) to the
holders of shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Series A Preferred Stock,
except distributions made ratably on the Series A Preferred Stock and all such
parity stock in proportion to the total amounts to which the holders of all such
shares are entitled upon such liquidation, dissolution or winding up. In the
event the Corporation shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the aggregate amount to which holders of shares of Series A Preferred
Stock were entitled immediately prior to such event under the proviso in clause
(1) of the preceding sentence shall be adjusted by multiplying such amount by a
fraction the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.

               (B) In the event, however, that there are not sufficient assets
available to permit payment in full to the Series A Liquidation Preference and
the liquidation preferences of all other series of Preferred Stock, if any,
which rank on a parity with the Series A Preferred Stock, then such remaining
assets shall be distributed ratably to the holders of such


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parity shares in proportion to their respective liquidation preferences. In the
event, however, that there are not sufficient assets available to permit payment
in full of the Common Adjustment, then such remaining assets shall be
distributed ratably to the holders of Common Stock.


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               (C) In the event the Corporation shall at any time after the
Rights Declaration Date (i) declare any dividend on Common Stock payable in
shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii)
combine the outstanding Common Stock into a smaller number of shares, then in
each such case the Adjustment Number in effect immediately prior to such event
shall be adjusted by multiplying such Adjustment Number by a fraction the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

               Section 7. Consolidation, Merger, etc. In case the Corporation
shall enter into any consolidation, merger, combination or other transaction in
which the shares of Common Stock are exchanged for or changed into other stock
or securities, cash and/or any other property, then in any such case each share
of Series A Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share, subject to the provision for adjustment
hereinafter set forth, equal to Ten Thousand (10,000) times the aggregate amount
of stock, securities, cash and/or any other property (payable in kind), as the
case may be, into which or for which each share of Common Stock is changed or
exchanged. In the event the Corporation shall at any time declare or pay any
dividend on the Common Stock payable in shares of Common Stock, or effect a
subdivision or combination or consolidation of the outstanding shares of Common
Stock (by reclassification or otherwise than by payment of a dividend in shares
of Common Stock) into a greater or lesser number of shares of Common Stock, then
in each such case the amount set forth in the preceding sentence with respect to
the exchange or change of shares of Series A Preferred Stock shall be adjusted
by multiplying such amount by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

               Section 8. No Redemption. The shares of Series A Preferred Stock
shall not be redeemable.

               Section 9. Rank. The Series A Preferred Stock shall rank, with
respect to the payment of dividends and the distribution of assets, junior to
all series of any other class of the Corporation's Preferred Stock.

               Section 10. Amendment. The Restated Articles of Incorporation of
the Corporation shall not be amended in any manner which would materially alter
or change the powers, preferences or special rights of the Series A Preferred
Stock so as to affect them adversely without the affirmative vote of the holders
of at least a majority of the outstanding shares of Series A Preferred Stock,
voting together as a single class.


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               The undersigned certify under penalty of perjury that they have
read the foregoing Certificate of Determination and know the contents thereof,
and that the statements therein are true.

               Executed at San Jose, California, on June 10, 1998.



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