Item 1.01 Entry into a Material Definitive Agreement.

On October 14, 2009, Juniper Networks, Inc. (the "Company") entered into amendments to three existing leases for the Company's corporate headquarters facilities in Sunnyvale, California. The amendments were entered into with Sunnyvale Office Park, L.P., the successor in interest to CSVH Mathilda I, LLC, CSVH Mathilda II, LLC and CSVH Mathilda III, LLC, the successors in interest to Mathilda Operating Company LLC, the holding company of Mathilda Associates LLC and Mathilda Associates II LLC, the original landlords under the respective leases. Each lease was amended to: (1) extend the underlying lease term, and (2) establish new monthly base rent payments for periods after November 1, 2009. The new monthly base rent payments represent a significant reduction in base rent that would have been payable for the previously remaining terms of each of the underlying leases. A summary of the amendments is as follows:

1. The lease between Mathilda Associates LLC and the Company dated June 18, 1999, as amended, for the building located at 1194 N. Mathilda Avenue, Sunnyvale California was amended to extend the term of such lease to June 30, 2020.

2. The lease between Mathilda Associates LLC and the Company dated February 28, 2000, as amended, for the building located at 1184 N. Mathilda Avenue, Sunnyvale California was amended to extend the term of such lease to October 31, 2021.

3. The lease between Mathilda Associates II LLC and the Company dated August 15, 2000, as amended, for the building located at 1220 N. Mathilda Avenue, Sunnyvale California was amended to extend the term of such lease to November 30, 2022.

The aggregate base rent payments under the amended leases are as follows:

Period: Monthly Amount

11/1/09-6/30/11: $1,143,145.78*
7/1/11-6/30/12: $1,177,781.01
7/1/12-6/30/13: $1,213,455.30
7/1/13-6/30/14: $1,250,199.82
7/1/14-6/30/15: $1,288,046.67
7/1/15-6/30/16: $1,327,028.93
7/1/16-6/30/17: $1,367,180.65
7/1/17-6/30/18: $1,408,536.93
7/1/18-6/30/19: $1,451,133.89
7/1/19-6/30/20: $1,495,008.77
7/1/20-6/30/21: $1,042,194.66
7/1/21-10/31/21: $1,073,671.81
11/1/21-6/30/22: $617,846.56
7/1/22-11/30/22: $636,489.41

* The Company is entitled to a rent credit for the month of November 2009 in the amount of $347,072.42 against the base rent obligation.

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