IP Infusion's ZebOS Advanced Routing Suite Release 5.2 Offers IS-ISv6 And CSPF extensions For IS-ISv4

SAN JOSE, Calif. January 7, 2003 - IP Infusion, a leading provider of intelligent network software for enhanced IP services, announced today the availability of version 5.2 of its ZebOS™ Advanced Routing Suite (ARS). IP Infusion now adds Intermediate Systems-to-Intermediate-Systems for IPv6 (IS-ISv6), as well as Constraint-based Shortest Path First (CSPF) for IS-ISv4 support.

"We are pleased to announce that our ZebOS Advanced Routing Suite IS-IS implementation now supports the IPv6 protocol extensions. With the growth of peer-to-peer networking applications, IPv6 is quickly becoming a key protocol component for communications equipment vendors. Our IS-ISv6 implementation continues our leadership in the IPv6 space," said Nick Keating, President and CEO of IP Infusion. "Furthermore, we have added CSPF extensions to IS-ISv4 to provide traffic engineering solutions for vendors integrating the IS-IS protocol with an MPLS core network. We now have IGP traffic engineering support for both OSPF and IS-IS to interface with an MPLS backbone network."

About Advanced Routing Suite Version 5.2 Features
IPv6 Intermediate System-to-Intermediate System (IS-ISv6) Module
The ZebOS Advanced Routing Suite (ARS) IPv6 Intermediate System-to-Intermediate System (IS-ISv6) Module is based on link-state technology with two levels of hierarchy. It stores information about the state of links and uses that data to select paths. IS-ISv6 forwards packets directly over the underlying link-layer protocols using the Dijkstra algorithm to find the shortest path to the destination. The ZebOS IS-ISv6 modularity enables OEM customers to deliver their products in a timely manner to market. The IS-ISv6 Module is fully integrated and tested with ZebOS Network Services Module (NSM) and other ZebOS IPv6 protocol modules. The ZebOS IS-ISv6 Module is written in ANSI C.

IS-ISv4 with Constrained Shortest Path First (CSPF) Extensions
The IS-ISv4 Constrained Shortest Path First (CSPF) extensions calculates an optimum explicit route (ER) based on the specified constraints, using Traffic Engineering Database (TED) and pre-existing LSPs. The resulting ER is used by a signaling protocol, such as RSVP-TE, to setup LSPs. Currently, our CSPF module can be linked to our ISISv4-TE module, and together with RSVP-TE module provide a full Traffic Engineering solution.

Availability
ZebOS ARS Version 5.2 is available immediately for delivery. For further details, please visit our web site at www.ipinfusion.com, send an email to info@ipinfusion.com, or call 408.794.1500.

About IP Infusion's ZebOS Routing Suites
IP Infusion designs, develops, and markets its ZebOS family of advanced IP routing suites, which are based on a unique, modular, multi-process architecture featuring control-plane components that provide route redistribution and conversion, management services, and an OS/processor abstraction layer for routing and switching modules. This high-performance routing software features IPv4/IPv6 versions of OSPF, BGP, RIP, and IS-IS routing protocols; MPLS, BGP-VPN, RSVP-TE, and CR-LDP switching and signaling protocols; Mobile IP, routing redundancy, multicast, virtual routing, Layer 2 VPN (draft Martini), and TCP/IP dual stack support. ZebOS software suites can be delivered as portable, platform-independent source code or in server solutions.

About IP Infusion Inc.
A leading provider of intelligent network software for enhanced IP services, IP Infusion is a developer of networking software that enables equipment vendors, service providers, and telecommunications and enterprise companies to rapidly build and provision a broad range of value-added IP services around our core routing and switching software technology. Founded in 1999, IP Infusion has employees in San Jose, California; Cary, North Carolina; Boston, Massachusetts; and Europe. With the explosion of networking technology and standards, IP Infusion's software makes it easier for equipment vendors and solution providers to deliver solutions to the market in a timely, cost-effective manner. The company has a growing global customer base in the wired and wireless networking markets and has alliances with industry leading network processor (NPU) suppliers. IP Infusion is a member of the Network Processing Forum and an active participant in the IETF. For more information about the company and its products call 408.794.1500 or visit www.ipinfusion.com.

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ZebOS is a registered trademark and IP Infusion and the ipinfusion logo are trademarks of IP Infusion Inc. All other names mentioned are trademarks, registered trademarks or service marks of their respective companies.