Ixia Announces Aptixia Family of Test Applications; Aptixia Delivers the Industry's Most Comprehensive L2-7 Test Functionality in Conjunction with Ixia's Optixia Test Platform

Business Wire, April 18, 2006

CALABASAS, Calif. -- Ixia (Nasdaq:XXIA), a leading, global provider of IP performance test systems, announced today the Aptixia(TM) family of test applications and a statement of direction for ongoing enhancements. The Aptixia family consists of the IxNetwork(TM) application for L2-3 testing, the IxLoad(TM) application for L4-7 testing, and the IxScriptMate(TM) application for pre-built L2-7 tests. The Aptixia family shares a common test application framework, and operates in conjunction with Optixia(R) - Ixia's industry-leading hardware platform. (See accompanying press release for April 18, 2006, "Ixia Advances Optixia Test Platform.")

Aptixia is an evolution of Ixia's industry-leading test applications into a new operational framework while preserving existing Ixia test platform support and API compatibility. This development strategy allows a seamless migration for existing customers while offering several key new benefits:

--Best L2-7 test coverage in the industry with support for the broadest range of technologies with very detailed control over various protocols options

--Industry's only integrated Triple Play test application for IPTV testing, VoIP testing, and data testing from a single GUI

--Largest library of pre-built tests in the industry across a wide range of technologies

--Best reports and most statistics in the industry for easy result interpretation and test analysis

--Best automation with deepest API's in the industry for universal automation with flexibility

Looking forward in 2006, rapid advances in test functionality in Aptixia will become available to match the growing needs of our customers for testing Real World Traffic(TM). These will include further integration of L2-3 and L4-7 testing, and additional advances in IPTV, VoIP, and security testing, while continuing to take advantage of advancements on the Optixia platform.

To learn more about the Aptixia family: http://www.ixiacom.com/solutions/

About Ixia

Ixia is a leading provider of performance test systems for IP-based infrastructure and services. Its highly scalable solutions generate, capture, characterize, and emulate network and application traffic, establishing definitive performance and conformance metrics of network devices or systems under test. 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. Ixia's vision is to be the world's pre-eminent provider of solutions to enable testing of next generation IP Triple Play networks. Ixia's test systems utilize a wide range of industry-standard interfaces, including Ethernet, SONET, ATM, and wireless connectivity, and are distinguished by their performance, accuracy, reliability, and adaptability to the industry's constant evolution.

For more information, contact Ixia at 26601 W. Agoura Road, Calabasas, CA 91302; (818) 871-1800, Fax: (818) 871-1805; Email: info@ixiacom.com or visit our Web Site at http://www.ixiacom.com.

Ixia, the Ixia four petal logo, Aptixia, Optixia, IxNetwork, IxLoad, IxScriptMate, and Real World Traffic are either registered trademarks or trademarks of Ixia in the United States and/or other countries. Other trademarks are the property of their respective owners.