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                                        Filed Pursuant to Rule 424(b)(3) and (c)
                                                           File Number 333-65867


                  PROSPECTUS SUPPLEMENT DATED JANUARY 15, 1999
                                       to
                       Prospectus Dated November 20, 1998

                                 278,246 SHARES

                               CISCO SYSTEMS, INC.

                                  COMMON STOCK

     This Prospectus Supplement supplements the Prospectus dated November 20,
1998 (the "Prospectus") of Cisco Systems, Inc. (the "Company") relating to the
public offering, which is not being underwritten, and sale by certain
shareholders of the Company or by pledgees, donees, transferees or other
successors in interest that receive such shares as a gift, partnership
distribution or other non-sale related transfer (the "Selling Shareholders") of
278,246 shares of Common Stock, par value of $0.001 per share, of the Company
(the "Common Stock") who received such shares in connection with the acquisition
by statutory merger of American Internet Corporation ("American Internet"), by
and through a merger of American Internet with and into the Company. This
Prospectus Supplement should be read in conjunction with the Prospectus, and
this Prospectus Supplement is qualified by reference to the Prospectus except to
the extent that the information herein contained supersedes the information
contained in the Prospectus. Capitalized terms used in this Prospectus Summary
and not otherwise defined herein have the meanings specified in the Prospectus.

                              SELLING SHAREHOLDERS

     Michael J. Zak, listed in Footnote 2 of the Prospectus (the "Footnote"),
gifted shares of the Company's Common Stock to the entity listed below which
were distributed to him through a partnership distribution. The Prospectus is
hereby amended to include an additional shareholder, identified in the table
below, not specifically identified in the Footnote in the Prospectus as a
Selling Shareholder.

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                                      Number of Shares    Percent of     Number of Shares
                                        Beneficially      Outstanding     Registered for
Name of Selling Shareholder                Owned            Shares        Sale Hereby(1)
- ---------------------------           ----------------    -----------    ----------------
                                                                      
Charles River Partnership VII(2)          278,246              *               278,246


- ------------
* less than one percent

(1)  This Registration Statement shall also cover any additional shares of
     Common Stock which become issuable in connection with the shares registered
     for sale hereby by reason of any stock dividend, stock split,
     recapitalization or other similar transaction effected without the receipt
     of consideration which results in an increase in the number of the Selling
     Shareholders' outstanding shares of Common Stock.

(2)  Subsequent to the date of this Prospectus Supplement, the shares held by
     Charles River Partnership VII may be distributed to Trinitarian
     Congregational Church of Concord, MA, in addition to those already listed
     in the Footnote.