content: <PAGE>
  
  
                                    UNITED STATES
                         SECURITIES AND EXCHANGE COMMISSION
                                Washington, DC 20549
  
  
                                      FORM 8-K
  
                               Current Report Pursuant
                            to Section 13 or 15(d) of the
                           Securities Exchange Act of 1934
  
  
                          Date of Report: October 11, 2001
  
  
                                REDBACK NETWORKS INC.
  --------------------------------------------------------------------------------
               (Exact Name of Registrant as Specified in its Charter)
  
  <TABLE>
  <S>                                           <C>                                         <C>
                    Delaware                                    000-25853                                77-0438443
  ---------------------------------------       -------------------------------------       -------------------------------------
        (State or Other Jurisdiction of                  (Commission File Number)                     (I.R.S. Employer
                 Incorporation)                                                                     Identification Number)
  </TABLE>
  
  
                                   250 Holger Way
                                 San Jose, CA 95134
                                   (408) 571-5000
  --------------------------------------------------------------------------------
          (Addresses, including zip code, and telephone numbers, including
                     area code, of principal executive offices)
  
  
  
  ITEM 5.    OTHER EVENTS.
  
  On October 9, 2001 Redback Networks Inc. (the "Company") was served with notice
  that Arrow Electronics, Inc. had commenced an action against the Company.
  Redback understands that Arrow will seek damages in excess of $54 million
  relating to inventory procured and manufactured on behalf of the Company. The
  Company intends to vigorously defend itself in this matter.
  
  
  
  <PAGE>
  
                                     SIGNATURES
  
           Pursuant to the requirements of the Securities Exchange Act of 1934,
  the Registrant has duly caused this report to be signed on its behalf by the
  undersigned hereunto duly authorized.
  
                                      REDBACK NETWORKS INC.
  
  
  DATE:  October 11, 2001             By: /s/ Dennis P. Wolf
                                         -----------------------------------------
                                         Dennis P. Wolf
                                         Senior Vice President of Finance and
                                         Administration, Chief Financial Officer
                                         and Corporate Secretary
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metadata_filer: {"company-data": {"conformed-name": "REDBACK NETWORKS INC", "cik": "0001081290", "assigned-sic": "7389", "irs-number": "770438443", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-25853", "film-number": "1756557"}, "business-address": {"street1": "250 HOLGER WAY", "city": "SAN JOSE", "state": "CA", "zip": "95134*1306", "phone": "4085715000"}, "mail-address": {"street1": "1195 BORREGAS AVE", "city": "SUNNYVALE", "state": "CA", "zip": "94089"}}
text: UNITED STATES
                         SECURITIES AND EXCHANGE COMMISSION
                                Washington, DC 20549
  
                                      FORM 8-K
  
                               Current Report Pursuant
                            to Section 13 or 15(d) of the
                           Securities Exchange Act of 1934
  
                          Date of Report: October 11, 2001
  
                                REDBACK NETWORKS INC.
  --------------------------------------------------------------------------------
               (Exact Name of Registrant as Specified in its Charter)
  Delaware                                    000-25853                                77-0438443
  ---------------------------------------       -------------------------------------       -------------------------------------
        (State or Other Jurisdiction of                  (Commission File Number)                     (I.R.S. Employer
                 Incorporation)                                                                     Identification Number)
  250 Holger Way
                                 San Jose, CA 95134
                                   (408) 571-5000
  --------------------------------------------------------------------------------
          (Addresses, including zip code, and telephone numbers, including
                     area code, of principal executive offices)
  
  ITEM 5.    OTHER EVENTS.
  
  On October 9, 2001 Redback Networks Inc. (the "Company") was served with notice
  that Arrow Electronics, Inc. had commenced an action against the Company.
  Redback understands that Arrow will seek damages in excess of $54 million
  relating to inventory procured and manufactured on behalf of the Company. The
  Company intends to vigorously defend itself in this matter.
  SIGNATURES
  
           Pursuant to the requirements of the Securities Exchange Act of 1934,
  the Registrant has duly caused this report to be signed on its behalf by the
  undersigned hereunto duly authorized.
  
                                      REDBACK NETWORKS INC.
  
  DATE:  October 11, 2001             By: /s/ Dennis P. Wolf
                                         -----------------------------------------
                                         Dennis P. Wolf
                                         Senior Vice President of Finance and
                                         Administration, Chief Financial Officer
                                         and Corporate Secretary