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 on Form S-3 and related Prospectus of Juniper Networks,
Inc. for the registration of its common stock and to the incorporation by
reference therein of our report dated January 15, 2001 with respect to the
consolidated financial statements of Juniper Networks, Inc. included in its
Annual Report (Form 10-K) for the year ended December 31, 2000, and the related
financial statement schedule included therein, filed with the Securities and
Exchange Commission.


/s/ ERNST & YOUNG LLP


Palo Alto, California
December 19, 2001