-----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,
 QUnQWEEfOlEQaWWswnBfp+NT/KXzaoNYv3VYcBVXJz5IZtZqhHkz9sW4DK7dSZ/j
 ryaad4ruXlu9E8CDNSEQ2Q==

<SEC-DOCUMENT>0001209191-09-050769.txt : 20091103
<SEC-HEADER>0001209191-09-050769.hdr.sgml : 20091103
<ACCEPTANCE-DATETIME>20091103193520
ACCESSION NUMBER:		0001209191-09-050769
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20091101
FILED AS OF DATE:		20091103
DATE AS OF CHANGE:		20091103

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TRIEBES KARL D
		CENTRAL INDEX KEY:			0001200474

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26041
		FILM NUMBER:		091155988

	MAIL ADDRESS:	
		STREET 1:		FOUNDRY NETWORKS
		STREET 2:		2100 GOLD STREET
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95002-2100

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			F5 NETWORKS INC
		CENTRAL INDEX KEY:			0001048695
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER COMMUNICATIONS EQUIPMENT [3576]
		IRS NUMBER:				911714307
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		401 ELLIOT AVE WEST
		STREET 2:		STE 500
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98119
		BUSINESS PHONE:		2062725555

	MAIL ADDRESS:	
		STREET 1:		401 ELLIOT AVE WEST
		STREET 2:		STE 500
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98119

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	F5 LABS INC
		DATE OF NAME CHANGE:	19990305
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24.4_304348
<SEQUENCE>2
<FILENAME>poa.txt
<DESCRIPTION>POA DOCUMENT
</DOCUMENT>
</SUBMISSION>