-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 F52NcCKEjFUD361Vfc71AQ8bILZMyqfqaGRX3VPIc2MiR3c4LvMb2iZf3ic0Azc2
 409V0YwEkNvdu9zZznF/Ug==

<SEC-DOCUMENT>0001209191-03-017908.txt : 20030819
<SEC-HEADER>0001209191-03-017908.hdr.sgml : 20030819
<ACCEPTANCE-DATETIME>20030819191110
ACCESSION NUMBER:		0001209191-03-017908
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030815
FILED AS OF DATE:		20030819

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REYES GREG
		CENTRAL INDEX KEY:			0001191071

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25601
		FILM NUMBER:		03856828

	MAIL ADDRESS:	
		STREET 1:		1745 TECHNOLOGY DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BROCADE COMMUNICATIONS SYSTEMS INC
		CENTRAL INDEX KEY:			0001009626
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				770409517
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1028

	BUSINESS ADDRESS:	
		STREET 1:		1745 TECHNOLOGY DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110

	MAIL ADDRESS:	
		STREET 1:		1745 TECHNOLOGY DRIVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>bpa92594_bpa1glr.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-08-15</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0001009626</issuerCik><issuerName>BROCADE COMMUNICATIONS SYSTEMS INC</issuerName>        <issuerTradingSymbol>BRCD</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001191071</rptOwnerCik><rptOwnerName>REYES GREG</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1></rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>SAN JOSE</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>95110</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Chairman and CEO</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable>
<nonDerivativeHolding><securityTitle><value>Common Stock</value><footnoteId id="F1" /></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>4052879</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>by Trust</value><footnoteId id="F1" /></natureOfOwnership></ownershipNature></nonDerivativeHolding><nonDerivativeHolding><securityTitle><value>Common Stock</value><footnoteId id="F2" /></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1000000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>by Foundation</value><footnoteId id="F2" /></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeHolding><securityTitle><value>Non-qualified Stock Option (right
 to buy)</value><footnoteId id="F3" /></securityTitle><conversionOrExercisePrice><value>6.54</value></conversionOrExercisePrice><exerciseDate><value>2003-07-10</value></exerciseDate><expirationDate><value>2013-07-10</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>100000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>100000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-qualified Stock Option (right to buy)</value><footnoteId id="F4" /></securityTitle><conversionOrExercisePrice><value>6.54</value></conversionOrExercisePrice><exerciseDate><value>2003-07-10</value></exerciseDate><expirationDate><value>2013-07-10</value></expirationDate><underlyingSe
curity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>480000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>480000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-qualified Stock Option (right to buy)</value><footnoteId id="F5" /></securityTitle><conversionOrExercisePrice><value>6.54</value></conversionOrExercisePrice><exerciseDate><value>2003-07-10</value></exerciseDate><expirationDate><value>2013-07-10</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>16144</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>16144</val
ue></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-qualified Stock Option (right to buy)</value><footnoteId id="F6" /></securityTitle><conversionOrExercisePrice><value>6.54</value></conversionOrExercisePrice><exerciseDate><value>2003-07-10</value></exerciseDate><expirationDate><value>2013-07-10</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>380858</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>380858</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-qualified Stock Opti
on (right to buy)</value><footnoteId id="F7" /></securityTitle><conversionOrExercisePrice><value>6.54</value></conversionOrExercisePrice><exerciseDate><value>2003-07-10</value></exerciseDate><expirationDate><value>2013-07-10</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>1212</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1212</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Non-qualified Stock Option (right to buy)</value><footnoteId id="F8" /></securityTitle><conversionOrExercisePrice><value>6.54</value></conversionOrExercisePrice><exerciseDate><value>2003-07-10</value></exerciseDate><expirationDate><value>2013-07-10</value></expirationDate><underly
ingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>125000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>125000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeHolding><derivativeTransaction><securityTitle><value>Non-qualified Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>5.53</value></conversionOrExercisePrice><transactionDate><value>2003-08-15</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>600000</value></transactionShares><transactionPricePerShare><value>0.00</value><footnoteId id="F9" /></transactionPricePerSh
are><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-09-15</value><footnoteId id="F10" /></exerciseDate><expirationDate><value>2010-08-15</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>600000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>600000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Beneficial ownership disclosure only.  Shares held by the Reyes Family Trust DTD 4/30/95, over which the Reporting Person and his spouse exercise investment and voting control.</footnote><footnote id="F2">Beneficial ownership disclosure only.  Shares held by the Reyes Fami
ly Foundation.</footnote><footnote id="F3">Beneficial ownership disclosure only.  66,666 options vest on July 10, 2003; 33,334 options vest monthly from August 1, 2003 through November 1, 2003.</footnote><footnote id="F4">Beneficial ownership disclosure only.  26,666 options vest on July 10, 2003; 133,334 options vest monthly from August 1, 2003 through November 1, 2006; 320,000 options vest monthly from November 1, 2005 through November 1, 2006.</footnote><footnote id="F5">Beneficial ownership disclosure only.  10,969 options vest on July 10, 2003; 5,175 options vest monthly from August 1, 2003 through November 1, 2003.</footnote><footnote id="F6">Beneficial ownership disclosure only.  21,158 options vest on July 10, 2003; 105,794 options vest monthly from August 1, 2003 through November 1, 2006; 253,906 options vest monthly from November 1, 2005 through November 1, 2006.</footnote><footnote id="F7">Beneficial ownership disclosure only.  1,212 options vest on July 10, 2003.</footnote><footnote id="F8">Benef
icial ownership disclosure only.  54,687 options vest on July 10, 2003; 70,313 options vest monthly from August 1, 2003 through October 1, 2005.</footnote><footnote id="F9">The price of the deritive security will be determined at a future date upon exercise of the option.</footnote><footnote id="F10">Options vest monthly from September 15, 2003 through August 15, 2007.</footnote></footnotes><ownerSignature><signatureName>/s/ Gregory L. Reyes</signatureName><signatureDate>2003-08-19</signatureDate></ownerSignature></ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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