June 4, 2007

VIA EDGAR, OVERNIGHT COURIER AND FACSIMILE
Securities and Exchange Commission
Division of Corporation Finance
450 Fifth Street, NW
Washington, DC 20549
Fax. No. (202) 772-9210

Attention:  Tamara Tangen, CPA
Division of Corporation Finance

Re:  Comment Letter Dated May 21, 2007
Juniper Networks, Inc.
Form 10-K for Fiscal Year Ended December 31, 2006
Form 8-K Filed on April 23, 2007
File No. 0-26339

Ladies and Gentlemen:

     We refer to Mr. Krikorian’s letter dated May 21, 2007 which sets forth the comments of the staff of the Securities and Exchange Commission (the “Staff”) regarding the Form 10-K for the fiscal year ended December 31, 2006 and the Form 8-K dated April 23, 2007 of Juniper Networks, Inc. (the “Company”).

     The Company intends to respond to the Staff’s comments by June 18, 2007.

     If you have any questions, please do not hesitate to call the undersigned at (408) 745-2384.

Very truly yours,


JUNIPER NETWORKS, INC.
 

/s/ Mitchell L. Gaynor  

Vice President and General Counsel