Confirming Statement

This Statement confirms that the undersigned, as an officer, director or
beneficial owner of more than 10% of any class of an equity security of
Juniper Networks, Inc. (the "Corporation"), hereby appoints
Mitchell L. Gaynor, Michael Johnson
and Robert Dykes, and each of them, the undersigned's true and lawful
attorneys-in-facts and agents to complete and execute such Forms 144,
Forms 3, 4, and 5 and others forms (including any amendments thereto)
as such attorneys shall in his or her discretion determine to be required
or advisable pursuant to Rule 144 promulgated under the Securities Act
of 1933 (as amended), Section 16 of the Securities Exchange Act of 1934
(as amended) and the rules and regulations promulgated thereunder, or
any successor laws and regulations, as a consequence of the undersigned's
ownership, acquisition or disposition of securities of the Corporation, and to
do all acts necessary in order to file such forms with the Securities and
Exchange Commission, any securities exchange or national association,
the Corporation and such other person or agency as the attorney shall deem
appropriate.  The undersigned hereby ratifies and confirms all that said
attorneys-in-fact and agents shall do or cause to be done by virtue hereof.
The authority of Mitchell L. Gaynor, Robert C. Atherton and Marcel Gani
under this Limited Power of Attorney shall continue until the undersigned
is no longer required to file Forms 144, Forms 3, 4, and 5 with regard
to the undersigned's ownership of or transactions in securities of
the Corporation, unless earlier revoked in writing.  The undersigned
acknowledges that Mitchell L. Gaynor, Michael Johnson and Robert Dykes
are not assuming any of the undersigned's responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934 as amended or Rule 144
promulgated under the Securities Act of 1933 (as amended).

This Limited Power of Attorney is executed at Sunnyvale, California as of the
date set forth below.

Date:  January 9, 2006

/s/ Kim Perdikou