Ixia Provides MPLS Application Interoperability Testing for Carrier-Grade Networks at MPLS World Congress 2007.

Optixia X16 Test Platform Selected for Its Unique Ability to Provide Quality of Service Measurements for Up to 128,000 Concurrent Connections on an MPLS Network

CALABASAS, Calif. -- Ixia (Nasdaq:XXIA), a leading, global provider of IP performance test systems, today announced that its Optixia[TM] X16 test platform and its Aptixia IxNetwork[TM] test applications were used to validate the interoperability of devices and services provided by 10 leading equipment vendors for the European Advanced Networking Test Center's (EANTC) Multi-Vendor Interoperability Event at the MPLS World Congress 2007, held in Paris this week. Ixia's Optixia X16 platform and IxNetwork test application are emulating real-world traffic for a next generation end-to-end carrier network infrastructure transporting residential IPTV, triple play and business services. Ixia was selected for its unique ability to provide quality of service measurements for up to 128,000 concurrent connections on the MPLS network and its broad support for MPLS protocols.

"Ixia's participation is playing an important role in the success of our Multi-Vendor Interoperability Event," said Carsten Rossenhovel, managing director of EANTC. "Ixia has a long and successful history of providing leadership and fostering the development of MPLS. Their performance during this Interop event exceeds our expectations."

The Ixia test solution is playing a key role in helping EANTC meet its goal of providing carriers with a realistic picture of technical solutions, potential deployment issues and best practices in network design. Using the Optixia test platform with IxNetwork, end-to-end user traffic is being tested and verified for interoperability and performance over multiple topologies including multi-carrier Layer 2 and Layer 3 VPN over MPLS, End-to-End Pseudowires and Multi-Segment Pseudowires.

"The advancement of MPLS is highly dependent on the collaboration of equipment vendors and service providers to ensure true interoperability and high quality of experience, and that is where Ixia is focused today," said Errol Ginsberg, Ixia CEO. "EANTC is providing a great service to the industry by offering a multi-vendor validation process for MPLS networks and services."

Ixia's IxNetwork offers users the flexibility to customize their application to meet a wide range of requirements for testing complex network topologies consisting of thousands of network devices. Millions of routes and reachable hosts can be emulated within the topology. IxNetwork also provides users with the ability to customize millions of traffic flows to stress data plane performance. Ixia's Optixia chassis provide the basis for IxNetwork's superior testing capability.

A 12-page white paper with detailed test results is available online at http://www.eantc.de/mplswc07/MPLSWorldCongress2007-WhitePaper.pdf.

For more information, please go to http://www.ixiacom.com/products/display?skey=ch_optixia_x16 and http://www.ixiacom.com/products/aptixia_ixnetwork/.

About EANTC

The European Advanced Networking Test Center (EANTC) offers vendor-neutral consultancy and test facilities for network equipment manufacturers, service providers, and enterprise customers. Primary business areas include interoperability, conformance, and performance testing for IP, MPLS, Carrier Ethernet, and Voice over IP-related network technologies and applications. For more information contact Carsten Rossenhovel, Managing Director, at +49.30.3180595-0 or via e-mail at [e-mail]. http://www.eantc.com/

About Ixia

Ixia is a leading provider of performance test systems for IP-based infrastructure and services. Ixia's test systems are used by Network and Telephony Equipment Manufacturers, Semiconductor Manufacturers, Service Providers, Governments, and Enterprises to validate the functionality and reliability of complex IP networks, devices, and applications. Ixia's Triple Play test systems address the growing need to test voice, video, and data services and network capability under real-world conditions.

For more information, contact Ixia at 26601 W. Agoura Road, Calabasas, CA 91302; [phone], Fax: [phone]; Email: [e-mail] or visit our Web Site at http://www.ixiacom.com.

Ixia, Optixia, IxNetwork and the Ixia four petal logo are registered trademarks or trademarks of Ixia. Other trademarks are the property of their respective owners.

This material is for informational purposes only and subject to change without notice. It describes Ixia's present plans to develop and make available to its customers certain products, features and functionality. Ixia is only obligated to provide those deliverables specifically included in a written agreement between Ixia and the customer.