March 19, 2007 Mr. Michael Harrison Brocade Communications Systems, Inc. 1745 Technology Drive San Jose, CA 95110 Subject: Amendment 29 to SOW#1 of the IBM/Brocade Goods Agreement ROC-P-68

Exhibit 10.6

0000 Xxxxxxxxxx Xxxx
XXX, XX 00000

March 19, 2007

Mr. Xxxxxxx Xxxxxxxx
Brocade Communications Systems, Inc.
0000 Xxxxxxxxxx Xxxxx
Xxx Xxxx, XX 00000

Subject: Amendment 29 to SOW#1 of the IBM/Brocade Goods Agreement ROC-P-68

This letter (the “Amendment”) serves as Amendment Number 29 to SOW#1, including all amendments thereto (“SOW#1”) of the Goods Agreement ROC-P-68 (the “Agreement”), which the parties hereto do mutually agree to amend as follows

1. Delete the table in its entirety in Section 1.1, “Specifications” and replace with the following

IBM Specification/Attachments
(if applicable)		Engineering Change Level		Description
[**]		[**]		[**]
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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 1 of 18
Confidential Information

IBM Specification/Attachments
(if applicable)		Engineering Change Level		Description
[**]		[**]		[**]
[**]		[**]		[**]
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2. Update pricing with the attached Exhibit A.

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 #1. All other terms and conditions of the Goods Agreement and SOW#1 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#1 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/ X. Xxxxxx

3/26/07

By:

/s/ Xxxx Xxxxxxx

3-29-07

Authorized Signature

Date

Authorized Signature

Date

Xxxxxx Xxxxxx

Xxxx Xxxxxxx

Type or Print Name

Type or Print Name

VP Production Procurement

Dir. WW Sales Operations

Title & Organization

Title & Organization

[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 2 of 18
Confidential Information

AMENDMENT #29 to SOW-1
EXHIBIT A

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 3 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 4 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 5 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 6 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 7 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 8 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 9 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 10 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 11 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 12 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 13 of 18
Confidential Information

Supplier Part Number

Buyer Part Number

**13 months Software

IBM

Maintenance

Out of

Brocade

Model or FC

IBM PN /

(included in unit

Warranty

Model

Brocade P/N

#

NUMA-Q PN

Description

Unit Price

price of product)

Pricing

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 14 of 18
Confidential Information

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 15 of 18
Confidential Information

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 16 of 18
Confidential Information

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Amendment 29 to SOW 1		Page 17 of 18
Confidential Information