FORM 3
        	UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
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                      	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	                      	

1. Name and Address of Reporting Person *

Athreya Anand	2. Date of Event Requiring Statement (MM/DD/YYYY)
8/10/2017 
	3. Issuer Name and Ticker or Trading Symbol

JUNIPER NETWORKS INC [JNPR]	
(Last)        (First)        (Middle)

1133 INNOVATION WAY	4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                            _____ 10% Owner
___ X ___ Officer (give title below)          _____ Other (specify below)
Chief Development Officer /	
(Street)

SUNNYVALE, CA 94089       

(City)              (State)              (Zip)	5. If Amendment, Date Original Filed (MM/DD/YYYY)

	6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person	

Table I - Non-Derivative Securities Beneficially Owned	
1.Title of Security
(Instr. 4)	2. Amount of Securities Beneficially Owned
(Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)	4. Nature of Indirect Beneficial Ownership
(Instr. 5)	
Common Stock  	75475  	D  	 	

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 4)	2. Date Exercisable and Expiration Date
(MM/DD/YYYY)	3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)	6. Nature of Indirect Beneficial Ownership
(Instr. 5)	
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares				
Non-Qualified Stock Option (right to buy)  	3/18/2012   (1)	3/18/2018  	Common Stock  	20000  	$40.26  	D  	 	
Performance Stock Unit  	2/19/2017   (2)	2/19/2018  	Common Stock  	5078  	$0.0   (3)	D  	 	
Performance Stock Unit  	2/17/2018   (4)	2/17/2019  	Common Stock  	12099  	$0.0   (3)	D  	 	
RSU Award  	3/20/2016   (5)	3/20/2018  	Common Stock  	21751  	$0.0   (3)	D  	 	
RSU Award  	11/20/2018   (6)	11/20/2018  	Common Stock  	39250  	$0.0   (3)	D  	 	
RSU Award  	3/18/2017   (5)	3/18/2019  	Common Stock  	31216  	$0.0   (3)	D  	 	
RSU Award  	3/17/2018   (5)	3/17/2020  	Common Stock  	57537  	$0.0   (3)	D  	 	

Explanation of Responses:	
(1) 	Vests as to 25% of the shares subject to the option one year from the grant date and the balance shall vest 1/48th of the total shares granted each month thereafter.	
(2) 	Represents the maximum quantity of shares issuable. The exact number of shares issuable will be determined based on achievement of certain Company performance targets for the 2016 fiscal year, as determined by the Compensation Committee of the Board. The executive can earn either 0% or 100% of the target shares that will vest 50% each year over a two year period.	
(3) 	Column 8 is not an applicable reportable field.	
(4) 	Represents the maximum quantity of shares issuable. The exact number of shares issuable will be determined based on achievement of certain Company performance targets for the 2017 fiscal year, as determined by the Compensation Committee of the Board. The executive can earn either 0% or 100% of the target shares that will vest 50% each year over a two year period.	
(5) 	This awards vests from the original grant date as to thirty-four percent on the one year anniversary of the grant date and thirty-three percent annually on the second anniversary and third anniversary.	
(6) 	The award vests as to 100% on November 20, 2018 provided the employee remains a service provider through the vesting date.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Athreya Anand
1133 INNOVATION WAY
SUNNYVALE, CA 94089			Chief Development Officer		

Signatures		
Anand S Athreya		8/14/2017	
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.	
*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).	
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).	
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.	
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.	

Limited Power of Attorney - Securities Compliance
This statement confirms that the undersigned, as an officer, director or beneficial owner of more than 10% of any class of any equity security of Juniper Networks, Inc. (the "Corporation"), hereby appoints Brian Martin and Robert Mobassaly, 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 other 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 orcause to be done by virtue hereof. The authority of Brian Martin and Robert Mobassaly 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 Brian Martin and Robert Mobassaly 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.

/S/ Anand Athreya
Signature	

Anand Athreya
Type or Print Name
August 10, 2017
Date