October 1, 2009 Mr. Mike Harrison Brocade Communications Systems, Inc. San Jose, CA 95110 Subject: Amendment 3 to SOW#8 of the IBM/Brocade Goods Agreement ROC-P-68

Exhibit 10.156

0000 X XXXXXXXXXX XX

XXXXXXXX XXXXXXXX XXXX XX 00000-0000

October 1, 2009

Mr. Xxxx Xxxxxxxx

Brocade Communications Systems, Inc.

0000 Xxxxxxxxxx Xxxxx

Xxx Xxxx, XX 00000

Subject: Amendment 3 to SOW#8 of the IBM/Brocade Goods Agreement ROC-P-68

This letter (the “Amendment”) serves as Amendment Number 3 to SOW#8, including all amendments thereto (“SOW#8”) of the Goods Agreement ROC-P-68 (the “Agreement”), which the parties hereto do mutually agree to amend as follows

1. Delete Attachment A, Pricing in its entirety and replace with the attached Attachment A, Pricing.

2. The effective date of this Amendment shall be the date on the top of this Amendment (the “Effective Date”).

The parties acknowledge that they have read this Amendment, understand it, and agree to be bound by its terms and conditions. All capitalized terms not defined herein shall have the meaning set forth in the Goods Agreement or the SOW #8. All other terms and conditions of the Goods Agreement and SOW#8 that are unaffected by the revisions set forth in this Amendment shall remain in full force and effect. Further, the parties agree that this Amendment and the Goods Agreement and SOW#8 are the complete and exclusive statement of the agreement between the parties, superseding all proposals or other prior agreement, oral or written, and all other communications between the parties relating to this subject.

Accepted and Agreed To:						Accepted and Agreed To:
International Business Machines Corporation						Brocade Communications Systems, Inc.
By:		/s/ Xxxxxxxx X. Xxxxxx		10/2/09		By:		/s/ Xxxx Xxxxxx		10/2/09
		Authorized Signature		Date				Authorized Signature		Date
Xxxxxxxx X. Xxxxxx								Xxxx Xxxxxx
Type or Print Name								Type or Print Name
GCM – Storage OEM Procurement								Sr. Dir., OEM Services
Title & Organization								Title & Organization

Address:				Address:		0000 Xxxxxxxxxx Xxxxx
						Xxx Xxxx, XX 00000

IBM Brocade/Confidential

Accepted and Agreed To:
Brocade Communications Switzerland, SarL
By:		/s/ U. Plechschmidt		02-October-2009
		Authorized Signature		Date
Ulrich Plechschmidt
Type or Print Name
Vice President EMEA
Title & Organization

IBM Brocade/Confidential

ATTACHMENT A

[**] Pages 3-38 have been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

IBM Brocade/Confidential