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SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 1)*

Aruba Networks, Inc.

(Name of Issuer)

Common Stock, $0.0001 par value per share

(Title of Class of Securities)

043176106

(CUSIP Number)

December 31, 2008

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o Rule 13d-1(b)

o Rule 13d-1(c)

þ Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


CUSIP No.		043176106	13G	Page		2		of		20 Pages


1	NAMES OF REPORTING PERSONS Trinity Ventures VIII, L.P.


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	PN

(1) This Schedule 13G is filed by Trinity Ventures VIII, L.P. (“Trinity VIII”), Trinity VIII Side-By-Side Fund, L.P. (“Trinity VIII SBS”), Trinity VIII Entrepreneurs’ Fund, L.P. (“Trinity VIII Entrepreneurs’”), Trinity TVL VIII, LLC (“Trinity TVL VIII”), Trinity Ventures VII, L.P. (“Trinity VII”), Trinity VII Side-By-Side Fund, L.P. (“Trinity VII SBS”), Trinity TVL VII, LLC (“Trinity TVL VII”), Lawrence K. Orr (“Orr”), Noel J. Fenton (“Fenton”), Fred Wang (“Wang”), Augustus O. Tai (“Tai”), Timothy P. McAdam (“McAdam”), Kathleen A. Murphy (“Murphy”), Thomas C. Cole (“Cole”) and TVL Management Corporation (“TVL Management,” together with Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity TVL VIII, Trinity VII, Trinity VII SBS, Trinity TVL VII, Orr, Fenton, Wang, Tai, McAdam, Murphy and Cole, collectively, the “Reporting Persons”). The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.

(2) Includes (i) 1,157,331 shares held by Trinity VIII; (ii) 65,944 shares held by Trinity VIII SBS; (iii) 21,262 shares held by Trinity VIII Entrepreneurs’; (iv) 792,633 shares held by Trinity VII; (v) 37,067 shares held by Trinity VII SBS; and (vi) 693 shares held by TVL Management. Trinity TVL VIII serves as the general partner of Trinity VIII, Trinity VIII SBS and Trinity VIII Entrepreneurs’, and owns no securities of the Issuer directly. Trinity T VL VII serves as the general partner of Trinity VII and Trinity VII SBS, and owns no securities of the Issuer directly. Orr, Fenton, Wang, Tai, McAdam and Murphy are managing members of Trinity TVL VIII and Trinity TVL VII and serve as officers of TVL Management and share voting and investment control over the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management, and may be deemed to own beneficially the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management, however, each managing member disclaims beneficial ownership of the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management, except to the extent of their proportionate pecuniary interests therein and any shares held in their name.

(3) This percentage is calculated based upon 84,078,285 shares of the Issuer’s common stock outstanding (as of December 5, 2008), as set forth in the Issuer’s most recent 10-Q, filed with the Securities and Exchange Commission on December 10, 2008.


CUSIP No.		043176106	13G	Page		3		of		20 Pages


1	NAMES OF REPORTING PERSONS Trinity VIII Side-By-Side Fund, L.P.


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	PN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		4		of		20 Pages


1	NAMES OF REPORTING PERSONS Trinity VIII Entrepreneurs’ Fund, L.P.


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	PN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		5		of		20 Pages


1	NAMES OF REPORTING PERSONS Trinity TVL VIII, LLC


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	OO

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		6		of		20 Pages


1	NAMES OF REPORTING PERSONS Trinity Ventures VII, L.P.


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	PN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		7		of		20 Pages


1	NAMES OF REPORTING PERSONS Trinity VII Side-By-Side Fund, L.P.


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	PN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		8		of		20 Pages


1	NAMES OF REPORTING PERSONS Trinity TVL VII, LLC


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	OO

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		9		of		20 Pages


1	NAMES OF REPORTING PERSONS TVL Management Corporation


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California, United States of America

		5	SOLE VOTING POWER

NUMBER OF			0 shares

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0 shares

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,074,930 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	OO

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		10		of		20 Pages


1	NAMES OF REPORTING PERSONS Lawrence K. Orr


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States of America

		5	SOLE VOTING POWER

NUMBER OF			38,634 shares of Common Stock

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			38,634 shares of Common Stock

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,113,564 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.51% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		11		of		20 Pages


1	NAMES OF REPORTING PERSONS Noel J. Fenton


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States of America

		5	SOLE VOTING POWER

NUMBER OF			15,806 shares of Common Stock

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			15,806 shares of Common Stock

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,090,736 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.49% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		12		of		20 Pages


1	NAMES OF REPORTING PERSONS Fred Wang


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States of America

		5	SOLE VOTING POWER

NUMBER OF			10,409 shares of Common Stock

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			10,409 shares of Common Stock

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,085,339 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.48% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		13		of		20 Pages


1	NAMES OF REPORTING PERSONS Augustus O. Tai


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ (1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States of America

		5	SOLE VOTING POWER

NUMBER OF			12,106 shares of Common Stock

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			12,106 shares of Common Stock

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,087,036 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.48% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		14		of		20 Pages


1	NAMES OF REPORTING PERSONS Timothy P. McAdam


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ(1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States of America

		5	SOLE VOTING POWER

NUMBER OF			11,110 shares of Common Stock

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			11,110 shares of Common Stock

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,086,040 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.48% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group”for purposes of this Schedule 13G.


CUSIP No.		043176106	13G	Page		15		of		20 Pages


1	NAMES OF REPORTING PERSONS Thomas C. Cole


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ(1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States of America

		5	SOLE VOTING POWER

NUMBER OF			5,953 shares of Common Stock

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			0 shares

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			5,953 shares of Common Stock

WITH:		8	SHARED DISPOSITIVE POWER

			0 shares

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	5,953 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	less than 0.01% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G.

(2) Cole ceased being a managing member of Trinity TVL VIII and Trinity TVL VII and an officer of TVL Management effective June 30, 2008. As a result, Cole does not share voting and investment control over the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management, and Cole is not deemed to own beneficially the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management.


CUSIP No.		043176106	13G	Page		16		of		20 Pages


1	NAMES OF REPORTING PERSONS Kathleen A. Murphy


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
	(a) o
	(b) þ(1)

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States of America

		5	SOLE VOTING POWER

NUMBER OF			5,616 shares of Common Stock

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			2,074,930 shares of Common Stock (2)

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			5,616 shares of Common Stock

WITH:		8	SHARED DISPOSITIVE POWER

			2,074,930 shares of Common Stock (2)

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	2,080,546 shares of Common Stock (2)

10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

	2.47% (3)

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

	IN

(1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group”for purposes of this Schedule 13G.


Item 1(a).		Name of Issuer:


		Aruba Networks, Inc.


Item 1(b).		Address of Issuer’s Principal Executive Offices:


		1344 Crossman Avenue
		Sunnyvale, California 94089


Item 2(a).		Name of Person Filing:

Trinity Ventures VIII, L.P. (“Trinity VIII”)
Trinity VIII Side-By-Side Fund, L.P. (“Trinity VIII SBS”)
Trinity VIII Entrepreneurs’ Fund, L.P. (“Trinity VIII Entrepreneurs”)
Trinity TVL VIII, LLC (“Trinity TVL VIII”)
Trinity Ventures VII, L.P. (“Trinity VII”)
Trinity VII Side-By-Side Fund, L.P. (“Trinity VII SBS”)
Trinity TVL VII, LLC (“Trinity TVL VII”)
TVL Management Corporation (“TVL Management”)
Lawrence K. Orr (“Orr”)
Noel J. Fenton (“Fenton”)
Fred Wang (“Wang”)
Augustus O. Tai (“Tai”)
Timothy P. McAdam (“McAdam”)
Kathleen A. Murphy (“Murphy”)
Thomas C. Cole (“Cole”)


Item 2(b).		Address of Principal Business Office or, if none, Residence:


		Trinity Ventures
		3000 Sand Hill Road, Building 4, Suite 160
		Menlo Park, California 94025


Item 2(c).		Citizenship:


		Trinity VIII		California, United States of America
		Trinity VIII SBS		California, United States of America
		Trinity VIII Entrepreneurs’		California, United States of America
		Trinity TVL VIII		California, United States of America
		Trinity VII		California, United States of America
		Trinity VII SBS		California, United States of America
		Trinity TVL VII		California, United States of America
		TVL Management		California, United States of America
		Orr		United States of America
		Fenton		United States of America
		Wang		United States of America
		Tai		United States of America
		McAdam		United States of America
		Murphy		United States of America
		Cole		United States of America


Item 2(d).		Title of Class of Securities:


		Common Stock


Item 2(e).		CUSIP Number:


		043176106


Item 3.		Not applicable.

Page 17 of 20 Pages

Item 4. Ownership. The following information with respect to the ownership of the Common Stock of the Issuer by the persons filing this statement on Schedule 13G is provided as of December 31, 2008:


					Shared		Sole		Shared
	Shares Held		Sole Voting		Voting		Dispositive		Dispositive		Beneficial		Percentage
Reporting Persons	Directly		Power		Power (1)		Power		Power (1)		Ownership (1)		of Class (2)
Trinity VIII		1,157,331		0		2,074,930		0		2,074,930		2,074,930		2.47	%

Trinity VIII SBS		65,944		0		2,074,930		0		2,074,930		2,074,930		2.47	%

Trinity VIII Entrepreneurs’		21,262		0		2,074,930		0		2,074,930		2,074,930		2.47	%

Trinity TVL VIII		0		0		2,074,930		0		2,074,930		2,074,930		2.47	%

Trinity VII		792,633		0		2,074,930		0		2,074,930		2,074,930		2.47	%

Trinity VII SBS		37,067		0		2,074,930		0		2,074,930		2,074,930		2.47	%

Trinity TVL VII		0		0		2,074,930		0		2,074,930		2,074,930		2.47	%

TVL Management Corporation		693		0		2,074,930		0		2,074,930		2,074,930		2.47	%

Orr		38,634		38,634		2,074,930		38,634		2,074,930		2,113,564		2.51	%

Fenton		15,806		15,806		2,074,930		15,806		2,074,930		2,090,736		2.49	%

Wang		10,409		10,409		2,074,930		10,409		2,074,930		2,085,339		2.48	%

Tai		12,106		12,106		2,074,930		12,106		2,074,930		2,087,036		2.48	%

McAdam		11,110		11,110		2,074,930		11,110		2,074,930		2,086,040		2.48	%

Cole		5,953		5,953		0		5,953		0		5,953	less than 0.01%

Murphy		5,616		5,616		2,074,930		5,616		2,074,930		2,080,546		2.47	%


(1)		Trinity TVL VIII serves as the general partner of Trinity VIII, Trinity VIII SBS and Trinity VIII Entrepreneurs’, and owns no securities of the Issuer directly. Trinity TVL VII serves as the general partner of Trinity VII and Trinity VII SBS, and owns no securities of the Issuer directly. Orr, Fenton, Wang, Tai, McAdam and Murphy are managing members of Trinity TVL VIII and Trinity TVL VII and serve as officers of TVL Management and share voting and investment control over the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management. The managing members may be deemed to own beneficially the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management, however, each managing member disclaims beneficial ownership of the shares held by Trinity VIII, Trinity VIII SBS, Trinity VIII Entrepreneurs’, Trinity VII, Trinity VII SBS and TVL Management, except to the extent of their proportionate pecuniary interests therein and any shares held in their name.

(2)		This percentage is calculated based upon 84,078,285 shares of the Issuer’s common stock outstanding (as of December 5, 2008), as set forth in the Issuer’s most recent 10-Q, filed with the Securities and Exchange Commission on December 10, 2008.

Item 5. Ownership of 5 Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following þ.

Item 6. Ownership of More than 5 Percent on Behalf of Another Person

Page 18 of 20 Pages

Not applicable.

Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.

Not applicable.

Item 8. Identification and Classification of Members of the Group

Not applicable.

Item 9. Notice of Dissolution of a Group

Not applicable.

Item 10. Certification

Not applicable.

Page 19 of 20 Pages

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 2, 2009

TRINITY VENTURES VIII, L.P.
By its General Partner, Trinity TVL VIII, LLC

TRINITY VIII SIDE-BY-SIDE FUND, L.P.
By its General Partner, Trinity TVL VIII, LLC

TRINITY VIII ENTREPRENEURS’ FUND, L.P.
By its General Partner, Trinity TVL VIII, LLC

TRINITY TVL VIII, LLC

TRINITY VENTURES VII, L.P.
By its General Partner, Trinity TVL VII, LLC

TRINITY VII SIDE-BY-SIDE FUND, L.P.
By its General Partner, Trinity TVL VII, LLC

TRINITY TVL VII, LLC


/s/ Kathleen A. Murphy Kathleen A. Murphy
Managing Member

/s/ Lawrence K. Orr Lawrence K. Orr

/s/ Noel J. Fenton
Noel J. Fenton

/s/ Fred Wang
Fred Wang

/s/ Augustus O. Tai
Augustus O. Tai

/s/ Timothy P. McAdam
Timothy P. McAdam

/s/ Kathleen A. Murphy
Kathleen A. Murphy

/s/ Thomas C. Cole
Thomas C. Cole


Attention:		Intentional misstatements or omissions of fact constitute Federal criminal violations (See 18 U.S.C. 1001)

Page 20 of 20 Pages