EXHIBIT 23.1


               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS



We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Juniper Networks,
Inc. for the registration of $1,000,000,000 of common stock, preferred stock,
depositary shares, debt securities and  warrants in one or more offerings and in
any combination and to the incorporation by reference therein of our report
dated January 14, 2003, with respect to the consolidated financial statements
and schedule of Juniper Networks, Inc. included in its Annual Report (Form 10-K)
for the year ended December 31, 2002, filed with the Securities and Exchange
Commission.



                                                  /s/ ERNST & YOUNG LLP



San Jose, California
January 13, 2003