FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         	UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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 *

Ullal Jayshree	2. Issuer Name and Ticker or Trading Symbol

Arista Networks, Inc. [ ANET ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
President and CEO	
(Last)          (First)          (Middle)

5453 GREAT AMERICA PARKWAY	3. Date of Earliest Transaction (MM/DD/YYYY)

5/12/2017		
(Street)

SANTA CLARA, CA 95054
(City)        (State)        (Zip)	4. 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 Acquired, Disposed of, or Beneficially Owned	
1.Title of Security
(Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code
(Instr. 8)	4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)	5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)	
			Code	V	Amount	(A) or (D)	Price				
Common Stock  	5/12/2017  	 	S (1)	  	2276  	D	$145.4826   (2)	962550  	I  	By Trust for Child 1   (3)	
Common Stock  	5/12/2017  	 	S (1)	  	50  	D	$145.855  	962500  	I  	By Trust for Child 1   (3)	
Common Stock  	5/15/2017  	 	S (1)	  	13656  	D	$147.4833   (4)	948844  	I  	By Trust for Child 1   (3)	
Common Stock  	5/12/2017  	 	S (1)	  	2276  	D	$145.4826   (2)	962550  	I  	By Trust for Child 2   (3)	
Common Stock  	5/12/2017  	 	S (1)	  	50  	D	$145.855  	962500  	I  	By Trust for Child 2   (3)	
Common Stock  	5/15/2017  	 	S (1)	  	13656  	D	$147.4833   (4)	948844  	I  	By Trust for Child 2   (3)	
Common Stock  	5/12/2017  	 	S (1)	  	182  	D	$145.4826   (2)	22004  	I  	By Trust for Nephew   (5)	
Common Stock  	5/12/2017  	 	S (1)	  	4  	D	$145.855  	22000  	I  	By Trust for Nephew   (5)	
Common Stock  	5/15/2017  	 	S (1)	  	1092  	D	$147.4833   (4)	20908  	I  	By Trust for Nephew   (5)	
Common Stock  	5/12/2017  	 	S (1)	  	182  	D	$145.4826   (2)	22004  	I  	By Trust for Niece   (5)	
Common Stock  	5/12/2017  	 	S (1)	  	4  	D	$145.855  	22000  	I  	By Trust for Niece   (5)	
Common Stock  	5/15/2017  	 	S (1)	  	1092  	D	$147.4833   (4)	20908  	I  	By Trust for Niece   (5)	
Common Stock  	5/12/2017  	 	S (1)	  	4188  	D	$145.4826   (2)	2943656  	I  	by Trust   (6)	
Common Stock  	5/12/2017  	 	S (1)	  	92  	D	$145.855  	2943564  	I  	by Trust   (6)	
Common Stock  	5/15/2017  	 	S (1)	  	25128  	D	$147.4833   (4)	2918436  	I  	by Trust   (6)	
Common Stock  	 	 	 	  	 	 	 	1288  	D  	 	

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code
(Instr. 8)	5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)	6. Date Exercisable and Expiration Date	7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)	8. Price of Derivative Security
(Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)	
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares					

Explanation of Responses:	
(1) 	The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 14, 2017.	
(2) 	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $144.81 to $145.78, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.	
(3) 	These shares are held in a trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.	
(4) 	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $147.17 to $148.08, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.	
(5) 	These shares are held in a trust for the benefit of a relative of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.	
(6) 	These shares are held by a family trust for which the reporting person is a trustee.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Ullal Jayshree
5453 GREAT AMERICA PARKWAY
SANTA CLARA, CA 95054	X		President and CEO		

Signatures		
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Jayshree Ullal		5/16/2017	
** 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 4(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.