NETWORK WORLD NEWSLETTER: DENISE DUBIE ON NETWORK OPTIMIZATION
09/07/04
Today's focus:  F5 and NetScaler clash over application traffic 
mgmt.

Dear [EMAIL PROTECTED],

In this issue:

* F5 Networks adds capabilities; NetScaler claims it already has 
��them
* Links related to Network Optimization
* Featured reader resource
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Today's focus:  F5 and NetScaler clash over application traffic 
mgmt.

By Denise Dubie

F5 Networks last week announced it had revamped its Big-IP 
traffic management line to include more application acceleration 
and compression features in one box. The news has already got at 
least one competitor making a case for their product.

The new Big-IP appliances and the software running on it, F5's 
Traffic Management Operating System (TM/OS), have been 
redesigned to track more than just application packets, F5 says. 
The appliances will monitor application traffic flows 
bi-directionally (on the server and on the client), and the 
software will be able to add relevance to the traffic reporting 
because it is looking at more than just the overall packet - it 
is also reading its content.

That means the software will be able to apply pre-defined 
policies on the request and response sides. It also means that 
the software will help the switch associate packets with certain 
applications and identify common conversations between clients 
and servers, according to F5.

"The product will remember the contents of the packet, not just 
know its header source and destination, and make intelligent 
decisions based on that," says Erik Giesa, vice president of 
product management at F5.

While F5 worked for the past few years on updating its 
architecture to offer this type of application proxy 
capabilities, one competitor says it already does this level of 
application traffic management.

NetScaler earlier this year introduced its 9000 and 9300 series 
of appliances, which include a Layer 4-7 packet inspection 
engine, which can balance loads among different servers based on 
high-level packet data. NetScaler this year introduced 
AppCompress, AppCache and AppExpert features on the appliances, 
which the company says allow it to perform more capabilities 
that its competitor.

"NetScaler is now shipping its new AppCompress functionality, 
which provides the ability to accelerate all TCP-based 
applications, not just HTTP traffic, since the traffic 
traversing enterprise networks are comprised of both Web- and 
non-Web application data," a NetScaler spokesman said. 
"NetScaler has offered features including compression, TCP 
offloading, [denial-of-service] attack protection that F5 is 
just now adding, and other capabilities, such as caching for 
dynamic application data, that F5...  still doesn't offer."

For its part, F5 says its products' differentiators include a 
lights-out management capability provided via an additional port 
on the appliance that lets network managers access the box and 
take it offline in case of a failure. The company also says its 
TM/OS platform helps its products scale better than other 
application delivery products from competitors such as Foundry 
Networks, Radware, Redline Networks and NetScaler.

RELATED EDITORIAL LINKS

F5 jams new tools into traffic manager
IDG News Service, 08/31/04
http://www.nwfusion.com/news/2004/0831f5jams.html

F5 brings traffic management to blades
InfoWorld, 04/05/04
http://www.nwfusion.com/news/2004/0405f5bring.html

SSL gear makers prep mgmt., security updates
Network World Fusion, 10/09/03
http://www.nwfusion.com/net.worker/news/2003/1009sslvens.html
_______________________________________________________________
To contact: Denise Dubie

Senior Writer Denise Dubie covers network and systems management 
for Network World. Reach her at <mailto:[EMAIL PROTECTED]>.
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