Dear Stockholder,

Juniper has filed its annual proxy statement in anticipation of our 2011 annual meeting of shareholders on May 18, 2011. We recognize that proxy season is a very busy time and we are committed to ensuring that our proxy communications and related materials are transparent and reflect our accountability to our shareholders.

The purpose of this note is to thank you in advance for your continued support of Juniper and to bring to your attention three important proposals in this year’s proxy. These proposals seek:

	•		Approval of the Juniper Performance Bonus Plan for purposes of complying with Rule 162(m) of the Internal Revenue Code
	•		Approval of a proposed amendment to Juniper’s 2006 Equity Plan — the proposal calls for the authorization of an additional 30 million of common shares to be reserved for issuance under the plan; and,
	•		A NON-binding advisory vote on our executive compensation program — known as a “say on pay” proposal, the vote is an opportunity for Juniper’s Board and Compensation Committee to review shareholder feedback as it makes future executive compensation decisions.

We would like to focus in particular on the proposed Equity Plan amendment. As we highlighted at our recent Financial Analyst Meeting, there are three critical components to successful execution of Juniper’s growth agenda: innovation; building our global sales capability; and attracting, engaging and retaining world-class talent. Having the appropriate amount of capacity in our Equity Plan clearly has direct impact on the latter component, but in reality is central to all three. That fact makes the Equity Plan vital to our growth strategy.

In 2010 we were grateful for your support of the proposed increase of 30,000,000 shares authorized for the program, the first such request since 2006. The request for another increase in 2011 reflects the acceleration of our growth strategy, evidenced in our strong 2010 results and recent innovation announcements in the mobility, data center and other areas, which we believe will position us to capitalize on significant growth in network investment by both service providers and enterprise customers over the next several years. The talent we’ve attracted to Juniper over the past year and will continue to seek will play a big role in our success in that regard.

Of course as we pursue this growth we recognize the importance of protecting the value of your investment in Juniper. In the past we have talked with many of you about our commitment to managing the dilution impact of our plan at less than 3%. In 2010 we have delivered on that commitment, maintaining the overall dilutive impact of new share issuance at 2.2%

Your ongoing support of Juniper is greatly appreciated and we hope we can count on your vote for the proposed amendment to our Equity Plan as well as support for the other management proposals to be considered at the annual meeting.

Sincerely,

/s/ Kevin Johnson                        /s/ Robyn Denholm
Kevin Johnson                         Robyn Denholm