Press Releases

Visual Networks Delivers LAN-Based Network and Application Visibility with New Suite of Ethernet Appliances

Visual UpTime® Select™ Solution Provides IT Managers Actionable Intelligence
For WAN- and LAN-based Applications Such as Voice Over IP (VoIP)


Rockville, Md. (March 21, 2005) – Visual Networks, Inc. (Nasdaq: VNWK), a leading provider of network and application performance management solutions, today announced the forthcoming release of its family of Ethernet appliances. With the low-, medium- and Gigabit-speed appliances, enterprises can now utilize the same set of rich network and application performance management capabilities for Local Area Network (LAN)-based applications that the company has traditionally delivered for applications that traverse the Wide Area Network (WAN). The new devices, the company’s initial entries into the LAN, are components of Visual UpTime® Select™, a modular solution that provides in-depth, real-time and historical information that enables enterprises to intelligently manage network availability across the entire enterprise.

While Ethernet remains the standard for LAN-based communications, it is being increasingly utilized for broadband connectivity to remote sites via access technologies such as Business DSL/Cable. IT managers require visibility into application performance over the WAN, because many enterprises are utilizing encryption, often via IPSec VPNs, and compression in conjunction with broadband access to provide more secure communications. The Visual UpTime Select Ethernet suite provides enterprises this requisite application visibility by monitoring traffic before it is typically encrypted or compressed. With the Ethernet suite, IT managers can integrate the analysis of application and network performance to take a holistic approach to managing the entire network infrastructure.

“Today's enterprises are placing increasing importance on achieving full WAN and LAN visibility,” said Elisabeth Rainge, program director, network management at IDC. “This is often quite difficult, due to the need to sort through both LAN-based and WAN-based network and application traffic to determine the source or impact of enterprise problems. As more and more employees connect remotely via access technologies such as Business DSL, Cable and Ethernet, the need for full visibility will continue to increase.”

“The release of our Ethernet ASE suite has been driven by our customers’ and partners’ desires to benefit the same robust functionality on the LAN that we have traditionally provided on the WAN,” said Larry Barker, President and CEO of Visual Networks. “These new technologies enable us to meet the market’s growing but still unmet needs for a single solution that can provide visibility into application performance for the WAN and the LAN. Additionally, the launch of our Ethernet appliances opens new, growing markets for UpTime Select. With Ethernet the global standard for connectivity, these new technologies will be key growth drivers for our European operations and are a fundamental competitive requirement for the Asian market, an area we are setting our sights on later this year.”

The company anticipates general availability of the Ethernet appliances in April. Pricing begins at $795.

About Visual Networks
Visual Networks, Inc. (Nasdaq: VNWK) is a leading provider of network and application performance management solutions. The company’s technologies enable enterprises to reliably and securely manage the delivery of mission-critical applications across their infrastructures. Visual Networks' products increase application and network availability, optimize the use of bandwidth, and reduce operating costs across traditional and IP-based infrastructures. For more information, visit www.visualnetworks.com.

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Forward Looking Statement
Certain statements in this press release may constitute “forward-looking statements” with respect to Visual Networks, Inc. and its subsidiaries (collectively, the “Company”). Forward-looking statements are based on management’s views and assumptions regarding business performance and future events as of the time the statements are made. These statements involve risks and uncertainties, including the risks detailed in Visual Networks’ filings with the U.S. Securities and Exchange Commission, which may cause actual results of the Company to differ materially from the statements. By making these forward-looking statements, the Company undertakes no obligation to update these statements for revision or changes after the date of this release.


©2005 Visual Networks Operations, Inc.

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