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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

For the fiscal year ended June 27, 2004

OR

For the transition period from              to             .

Commission file number 000-25711

Extreme Networks, Inc.

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code: (408) 579-2800

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act:

Common stock, $.001 par value

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act).    Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the Registrant’s knowledge, in definitive proxy or information statements incorporated by reference to Part III of this Form 10-K or any amendment to this Form 10-K.  ¨

The aggregate market value of voting stock held by non-affiliates of the Registrant was approximately $854,988,624 as of December 26, 2003, the last business day of the Registrant’s most recently completed second fiscal quarter, based upon the closing price on The Nasdaq National Market reported for such date. This calculation does not reflect a determination that certain persons are affiliates of the Registrant for any other purpose.

120,766,498 shares of the Registrant’s Common stock, $.001 par value, were outstanding August 10, 2004.

DOCUMENTS INCORPORATED BY REFERENCE

The information called for by Part III is incorporated by reference to specified portions of the Registrant’s Definitive Proxy Statement to be issued in conjunction with the Registrant’s 2004 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the Registrant’s fiscal year ended June 27, 2004.

Table of Contents

EXTREME NETWORKS, INC.

FORM 10-K

INDEX

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PART I

FORWARD LOOKING STATEMENTS

This annual report on Form 10-K, including the following sections, contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, particularly statements relating to our expectations for the first quarter of fiscal 2005, our expectations regarding results of operations, our ability to expand our market penetration, our ability to expand our distribution channels, customer acceptance of our products, our ability to meet the expectations of our customers, product demand and revenue, cash flows, product gross margins, our expectations to continue to develop new products and enhance existing products, our expectations to reduce warranty expenses as a percentage of revenue, our expectations regarding the amount of our research and development expenses, our expectations relating to our selling, general and administrative expenses, our efforts to achieve additional operating efficiencies and to review and improve our business systems and cost structure, our expectations to continue investing in technology, resources and infrastructure, our expectations concerning the availability of products from suppliers and contract manufacturers, anticipated product costs and sales prices, our expected effective income tax rate, our expectations that we have sufficient capital to meet our requirements for at least the next twelve months, our expectations regarding the rationalization of our workforce and facilities, and our expectations regarding materials and inventory management. These forward-looking statements involve risks and uncertainties, and the cautionary statements set forth below and those contained in the section entitled “Risk Factors” identify important factors that could cause actual results to differ materially from those predicted in any such forward-looking statements. We caution investors that actual results may differ materially from those projected in the forward-looking statements as a result of certain risk factors identified in this Form 10-K and other filings we have made with the Securities and Exchange Commission. More information about potential factors that could affect our business and financial results is set forth under “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Item 1. Business

Overview

Extreme Networks, Inc., together with its subsidiaries, (collectively referred to as Extreme or the Company and as we, us and our) is a leading provider of network infrastructure equipment for corporate, government, education and health care enterprises and metropolitan telecommunications service providers. We were established in 1996 to address the issues caused by slow and expensive legacy networks. We endeavored to change the industry by replacing complex software-based routers with simple, fast, highly intelligent, hardware-based network switches. The broad acceptance of this innovative, simplified approach to networking has enabled us to become an industry leader. Our ultimate goal is to realize our technology vision of Ethernet Everywhere – a unifying network strategy that uses proven Ethernet technology to simplify each element of the network. We believe our Ethernet Everywhere vision is the foundation for a future of easily deployable, highly scalable, comprehensively managed, ubiquitous bandwidth for networks, applications and users.

Our family of switching products provides significant performance improvements compared to legacy network infrastructures, while enabling greater flexibility and scalability, ease-of-use and a lower cost of ownership.

We have achieved these advantages by utilizing Application Specific Integrated Circuits, or ASICs, as well as merchant silicon in our products and by creating a common hardware, software and network management architecture for our products. In our products, the routing of network traffic, a function referred to as Layer 3 switching, is done primarily with our unique chipsets that provide faster processing of data than the CPU/software implementations used in many conventional networking products. We believe that our unique hardware and software designs can also provide a better price/performance ratio, resulting in a higher return on investment for our customers. Since chipsets are built for specific purposes, it allows for a lower cost structure with increased performance compared to other alternatives.

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Industry Background

Businesses, governments, educational institutions, health care enterprises and other organizations have become highly dependent on their internal networks and the Internet as their central communications infrastructure for providing connectivity for both internal and external communications. New computing applications, such as ERP or CRM, large enterprise data warehouses and sophisticated online transaction and other e-business applications, as well as the increased use of traditional applications such as e-mail and streaming media, require the support of significant information technology resources. The emergence of the desktop Internet browser as a standard user interface as well as the Internet Protocol, or IP, as a common, enabling network technology has enabled bandwidth-intensive applications that integrate voice, video and data over TCP/IP to be deployed extensively throughout organizations. The steady rise in application sophistication and the associated bandwidth load demands a fast, flexible and scalable network infrastructure.

Networking environments can be segmented into local area networks, or LANs, wide area networks, or WANs, and metropolitan area networks, or Metros.

LANs. LANs are traditional networks designed for connecting users to many types of application servers, which may be held locally or remotely through either private WANs or through such systems as the Internet. The LAN consists of servers, clients, a network operating system and a communications link to connect the LAN to other networks and to the Internet. The LAN market in which Extreme participates consists primarily of large and medium-sized enterprise customers.

WANs. WANs are communication networks that span across large geographic areas, such as counties, states or countries.

The addition of WAN support to ASIC-based or merchant silicon-based network switches permits encapsulated Ethernet services to reach customers where integration with existing Synchronous Optical Network/Synchronous Digital Hierarchy, or SONET/SDH, infrastructure is required.

The WAN market includes both incumbent local exchange carriers, or ILECs, and competitive local exchange carriers, or CLECs, multiple tenant/dwelling unit service providers, or MTUs, and Internet service providers, or ISPs, as primary customers, though an enterprise may also utilize a private WAN by using dark fiber, or unused fiber-optic cable, to connect their private LANs together.

Metros. Metros are networks that link mid-sized geographic areas such as a city or an entire metropolitan area.

Due to wide and steady deployment of increasingly scalable Ethernet technology, LAN traffic has achieved geometric growth in the aggregate amounts of data traffic delivered over networks and bandwidth rates, now delivered at Gigabit and 10 Gigabit speeds. Available bandwidth in WANs has also grown, as infrastructures are built out to accommodate the very rapid annual growth in Internet traffic. The Metro network has emerged as the key link between the LAN and the WAN.

In recent years, the Metro network has become a critical and dynamically evolving arena within the overall IP network infrastructure landscape. In addition to steadily rising traffic load, the underlying network technologies, architectures and protocols are experiencing incremental change. The competitive landscape for Metro service providers is shifting, with an influx of new carriers who do not necessarily depend upon legacy network transmission technologies such as SONET/SDH to deliver frame relay or ATM subscriber services.

The Metro market includes both ILECs and CLECs as well as alternative metropolitan service providers like utility companies, railroads and municipalities that provide Metro network services to connect multiple facilities. For example, a local government might build a Metro network to interconnect agencies, such as city hall, fire departments, road and vehicle maintenance facilities, hospitals and emergency centers, social services and public

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libraries. The same technologies and network architectures associated with Metros are becoming popular within large and very large corporate enterprises, which can utilize private Metros, by lighting “dark” fiber optic cabling, to create a “super campus” network, connecting facilities spread over a city-size area.

A network must be scalable in the following four dimensions:

Speed. Speed refers to the number of bits per second that can be transmitted across the network. Today’s network applications increasingly require speeds of up to 100 Mbps to the desktop. Therefore, the backbone and server connections that aggregate traffic from desktops require speeds in excess of 100 Mbps. “Wire-speed” refers to the ability of a network device to process an incoming data stream at the highest possible rate based on the full capability of the physical media, or wire without loss of packets. Wire-speed routing refers to the ability to perform Layer 3 switching at the maximum possible rate.

Bandwidth. Bandwidth refers to the volume of traffic that a network or a network device can handle before traffic is “blocked,” or unable to get through without interruption. When traffic was more predictable, the amount of traffic across a network link or through a network device generally grew in line with the number of devices connected to the network. With today’s data-intensive applications accessed in random patterns from both within and outside the core network, traffic can spike unpredictably, consuming significant bandwidth to the detriment of the network’s overall performance.

Network size. Network size refers to the number of users and servers or end points that are connected to a network. Today’s networks must be capable of reliably connecting tens of thousands of users and servers while providing high performance connectivity which results in maximum availability for both networked applications and services.

Quality of Service. Quality of Service refers to the ability to control the forwarding of traffic based upon its level of importance. Mission-critical enterprise applications, such as Voice-over-Internet Protocol, or VoIP, require specific performance minimums, while traffic such as general e-mail and Internet surfing may not be as critical. In addition to basic prioritization of traffic according to importance, enhanced Quality of Service also allocates bandwidth to specific applications based on a manager-defined policy.

Opportunity for Next Generation Switching Solutions

Several technology trends have enabled a new generation of networking equipment that can meet the four scalability dimensions required by today’s enterprises and service providers and the bandwidth-intensive, mission-critical applications on which they depend.

While many different network transmission technologies such as FDDI, Token Ring and ATM have been deployed in the LAN environment over the past 25 years, Ethernet has become the overwhelmingly dominant LAN technology. According to the Dell’Oro Group, an independent research organization, Ethernet is the technology used in over 99% of the LAN market in 2003 and over 1.1 billion ports were shipped over the preceding ten-year period. Ethernet was evolved from its original 10 Mbps form in continual and significant improvements, from 100 Mbps Fast Ethernet, to 1,000 Mbps, or “Gigabit” Ethernet to 10,000 Mbps or 10 Gigabit Ethernet, which became available during 2002. Today, Ethernet is moving beyond the LAN; Gigabit Ethernet and 10 Gigabit Ethernet technologies represent a viable, high-capacity transport technology option for Metro backbones based on IP, enabling broadband connections to be aggregated for transport across the core of the Metro.

With the widespread adoption of Ethernet and IP, the need to support a multi-transport, multi-protocol environment is diminishing. As a result, simplified routing functionality can be embedded in fast, inexpensive chipsets to replace complex software/CPU designs used in conventional multi-protocol routers. The resulting device, called a Layer 3 switch, functions as a less expensive and significantly faster hardware-based router.

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Layer 3 switches operate at multi-gigabit speeds and can support large networks. While Layer 3 switching dramatically increases network performance, many products fail to realize the potential of this technology as a result of inconsistent hardware, software and management architectures.

Customers require a Quality of Service solution that supports both industry-standard bandwidth prioritization and manager-defined Quality of Service that maps business processes and policies to network performance. In addition, to simplify the network, customers need a family of interoperable devices that utilize a consistent hardware, software and management architecture.

The Extreme Networks Solution

We provide Ethernet networking solutions that meet the requirements of today’s enterprises and service providers by providing increased performance, scalability, policy-based Quality of Service, simplicity of use and lower cost of ownership. Our products share a common hardware, software and network management architecture, are based on industry-standard routing and network management protocols and offer advanced policy-based Quality of Service features. Our switches can be managed from any browser-equipped computer or the Telnet applet supported in almost all operating systems. The Telnet applet allows access to the Command Line Interface, or CLI, which a system administrator may prefer to use.

The key benefits of our solutions are:

Lower cost of ownership. Our products are generally less expensive than software-based routers, yet offer higher routing performance. We believe that by sharing a common hardware, software and management architecture, our products can substantially reduce the cost and complexity of network management and administration. This uniform architecture creates a simpler network infrastructure that leverages the resources businesses have invested in Ethernet/IP-based networks, thereby requiring fewer resources and less time to maintain the network.

Simplicity. Networks typically consist of many different technologies and types of equipment. This complexity often makes it expensive and difficult to effectively manage and expand networks. We meet these challenges by focusing on product consistency and simplicity. Our products share a common hardware, software and network management architecture and enable Layer 3 switching at wire-speed in each key area of the network. This allows customers to build an integrated network environment that utilizes a consistent feature set, performance and management capabilities.

Ease-of-use and implementation. Our products are designed to make networks easy to manage and administer, thereby reducing the overall cost of network ownership. Through the use of a standards-based design approach, our products can be readily integrated into existing networks. Customers can usually upgrade to our products without the need for additional training. Moreover, our ExtremeWare® operating system software simplifies network management with a consistent, robust interface available in all product families.

High performance. Our products provide broadband Ethernet and IP services with the non-blocking, wire-speed performance of an ASIC-based or merchant silicon-based Layer 3 switching engine. With our switches, customers may achieve forwarding rates that are significantly faster than software-based routers.

Scalability. Our solutions offer customers the speed and bandwidth needed today — and the capability to scale their networks to support demanding applications in the future — without the burden of additional training or software and system complexity. Customers who purchase standard Extreme products may later upgrade to advanced Layer 3 and Layer 4 features, such as server load balancing or intermediate-to-intermediate system routing protocol, or ISIS, as this upgraded functionality is designed into our products.

Quality of Service. Our policy-based Quality of Service enables customers to prioritize mission-critical applications. We provide industry-leading tools for allocating network resources to specific applications. With

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our policy-based Quality of Service, customers can use a web-based interface to identify and control the forwarding of traffic from specific applications, in accordance with policies that the customers define. The Quality of Service functionality of our chipsets allows policy-based Quality of Service to be performed at wire-speed. In addition to providing prioritization, customers can allocate specified amounts of bandwidth to specific applications or users.

The Extreme Networks Strategy

Our goal is to be the provider of the most innovative and effective network solutions that create an improved applications and services infrastructure for enterprises and service providers. We seek to provide our customers with a best-of-breed alternative to single-sourced, highly proprietary networking equipment from larger competitors.

Key elements of our strategy include:

Provide simple, easy-to-use, high-performance, cost-effective switching solutions. We offer customers easy to use, powerful, cost-effective switching solutions that meet the specific demands of enterprises, and service and content providers. Our products provide customers with scalability from 10 Mbps Ethernet to 10 Gigabit Ethernet combined with the wire-speed, non-blocked routing of ASIC-based or merchant silicon-based Layer 3 switching. We intend to capitalize on our expertise in Ethernet, IP and hardware-based switching technologies to continuously develop new products that will meet the future requirements of a broad range of customers.

Expand market penetration. We continue to market our products to new customers in multiple market segments. The majority of our business is with enterprise customers, including those in government, education and the health care sectors, in addition to middle to large commercial enterprises. Extreme has consistently focused on these markets since early in our history. Additionally, we aim to leverage our technology development, service and support and business infrastructure resources to address the metropolitan Ethernet market. These customers include ISPs, content providers and Metro service providers. While currently most of our service provider and Metro-related business is generated outside of the United States, we believe there is a long-term growth opportunity in the metropolitan Ethernet market on a worldwide basis. Once customers deploy our products they obtain the increased benefits of our solution by simplifying their networks, extending policy-based Quality of Service and reducing costs of ownership, while increasing performance.

Extend switching technology leadership. Our technological leadership is based on proprietary technology embedded in our chipsets, the ExtremeWare® operating system and network management and software. We intend to invest our engineering resources in chipsets, software and other development areas to create leading-edge technologies that will increase the performance and functionality of our products. We also intend to maintain our active role in industry standards committees such as the Institute for Electrical and Electronics Engineers, or IEEE, and the Internet Engineering Task Force, or IETF.

Leverage and expand multiple distribution channels. We distribute our products through select distributors and a large number of resellers. To quickly reach a broad, worldwide audience, we have more than 300 resellers in approximately 50 countries, including regional networking system resellers, network integrators and wholesale distributors. We maintain a field sales force to support our resellers and to sell directly to a small number of select strategic accounts. We are continually developing and refining our two-tier distribution channel strategy.

Provide high-quality customer service and support. We seek to enhance customer satisfaction and build customer loyalty through high-quality service and support. This includes a wide range of standard support programs that provide the level of service our customers require, from standard business hours to global 24-hour-a-day, 365-day-a-year real-time response support. We intend to continue to enhance the ease of use of our products, and to invest in additional support services by increasing staff and adding new support programs for our distributors and resellers. We are committed to providing customer-driven product functionality through feedback from key prospects, consultants, channel partners and end-user customers.

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Products

We deliver effective applications and services infrastructure for enterprises and service providers based on award-winning technology that combines simplicity, high performance, intelligence and a low cost of ownership. Our Layer 3 Summit, BlackDiamond and Alpine products share the same common hardware and operating system, enabling businesses to build a network infrastructure that is simple, easy to manage and scalable to meet the demands of future growth.

Our award-winning 2^nd Generation Inferno ASIC and 3^rd Generation Triumph chipsets are incorporated in all i-series products, including the BlackDiamond and Alpine. Inferno provides the core technology for high-end Summit switches.

During the past fiscal year, three leading edge products were introduced by Extreme Networks: the Summit 300-48/Altitude 300, the Summit 400 series and the BlackDiamond 10K series, including our 4^th generation 4GNSS chipset. Additionally, we rolled out our revolutionary new Network Platform, ExtremeWare® XOS, in conjunction with the BlackDiamond 10K introduction.

Our principal hardware and software products are as follows:

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Summit Stackable Products

The Summit family of switches is designed to meet the demanding requirements of Enterprise and metropolitan-Ethernet-based applications. All Inferno-chipset-based Summit switches share a common switch architecture that provides scalability in four areas: speed, bandwidth, network size and policy-based Quality of Service. The Summit product family supports Gigabit and 10/100 Mbps aggregation for enterprise desktops and servers, large Internet data centers and broadband points of presence in Metros.

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The Summit48si and the new Summit 200 series switches allow us to remain an industry leader in Layer 3 switching for the desktop. The Summit200-24 and Summit200-48 switches offer low entry costs for sophisticated Layer 2 and Layer 3 services, respectively, at the network edge. Additionally the Summit48si switch delivers an aggregation switching solution with physical and logical access, security and user mobility features at the edge.

Extreme recently introduced the Summit 400-48t, the first in a series of Summit 400 switches. Delivering the highest Gigabit Ethernet density in the industry and matching throughput performance, the Summit 400-48t (Summit 400) enables deployment of new intelligent services faster and more efficiently than ever before. The Summit 400 series is Extreme Networks’ latest addition to its Unified Access (UA) architecture for the enterprise edge. It enables users to avoid costly upgrades as they deploy gigabit to the edge and is the industry’s highest-performance, Layer 3, fixed-configuration switching platform with 101 Mbps throughput and 48 10/100/1000 ports. The new Extreme Networks offering is also the first and only switch on the market with optional 10 Gigabit Ethernet uplinks.

The Summit 300 provides a unique set of capabilities as Extreme’s first Unified Access Architecture product supporting both wired and wireless Ethernet connectivity. The Unified Access Architecture capabilities simplify the deployment of wireless by providing simple to install access points (Altitude 300) that are managed from a single point, reducing the cost of ownership and providing uniform approaches to security, authentication, Quality of Service and resiliency irrespective of the media connectivity type in use.

The Summit 300-48 and Altitude access points enable unified access for wired and wireless applications at the network edge with the seamless integration of 802.11 a/b/g type high performance wireless LAN connectivity, Power over Ethernet, and integrated Layer 3 routing intelligence. Unified Access Architecture is the industry’s most versatile solution for the integrated network edge where the network must progressively support an array of devices including IP phones, laptop and desktop PCs and emerging devices such as IP cameras. Using Unified Access-enabled switches (the Summit 300-48) and the Altitude 300 access points, enterprises can simplify the installation and secure the operation of wired and wireless applications within a single “unified” infrastructure.

Other members of the Summit product line address server-switching constraints by providing switched Fast Ethernet or Gigabit Ethernet ports and high speed Gigabit uplinks to servers, delivering required bandwidth between servers, and to clients on attached segments. In server farms and data centers, the Summit1i, Summit5i and Summit7i switches maximize server availability and performance by combining server load-balancing with wire-speed switching.

BlackDiamond 10808 (10K) Series

The BlackDiamond 10808, the first in the family of next-generation BlackDiamond 10K switches, represents the future of core Ethernet networking for both enterprises and metropolitan service providers. Based on Extreme Networks’ revolutionary 4^th Generation Network Silicon System (4GNSS), the BlackDiamond 10K is the first product to deliver programmable T-Flex technology, which allows programmability of the chipset to allow changes in protocol support as new standards and protocols emerge.

BlackDiamond 6800 Series

The BlackDiamond 6800 series switch delivers carrier-class scalability, redundancy and high reliability for core switching in high-density Ethernet/IP enterprise and service provider networks. These modular switches include the fault-tolerant features associated with mission-critical enterprise-class Layer 3 core switching, including redundant system management and switch fabric modules, hot-swappable modules and chassis components, load-sharing power supplies and management modules, up to eight 10 Mbps, 100 Mbps or Gigabit aggregated links, dual software images and system configurations, spanning tree and multipath routing, and redundant router protocols for enhanced system and network reliability. The BlackDiamond switch can accommodate up to 16 I/O blades, including 10/100 Mbps, Gigabit and 10 Gigabit WAN interfaces.

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The network core is the most critical point in the network, serving as the convergence point for the majority of network traffic, including desktop, aggregation and server traffic. Network core switching involves switching traffic from desktops, segments and servers within the network. Owing to the high-traffic nature of the network core, the critical elements in core switching include wire-speed Layer 3 switching and routing, scalability, non-blocking hardware architecture, fault-tolerant mission-critical features, redundancy, and link aggregation capabilities. The ability to support a variety of high-density port speeds and to accommodate an increasing number of high-capacity backbone connections is also important.

The BlackDiamond 6800 series switch is certified to be compliant with Network Equipment Building Systems, or NEBS Level 3, and offers an extensive range of modules, including legacy connections such as Packet-over-SONET, or PoS, OC-3 and OC-12, and Asynchronous Transfer Mode, or ATM, metropolitan connectivity through Multi-Protocol Label Switching, or MPLS, billing capabilities through Accounting and Routing Module, optical connectivity with Wave Division Multiplexing, or WDM, and industry-leading 10 Gigabit Ethernet connectivity.

This product line continues to be significantly enhanced through the addition of Extreme’s 3^rd Generation technology, Triumph, which adds market leading density/performance characteristics and sophisticated ingress-based rate shaping as well as innovative streaming media replication. Triumph is fully hardware, or “backwards,” compatible with Extreme’s existing “Inferno” chipset that has been deployed in this platform for several years. This promotes excellent investment protection and continued low cost of ownership for the customer’s continued use of a single switching platform.

Alpine 3800 Series

The Alpine 3800 series switch provides a simple, resilient broadband infrastructure for Metros, ISPs and mid-range enterprise networks. The Alpine 3800 series provides total Ethernet coverage with support for both standard category 5 and fiber optic media as well as first mile technologies that extend the reach of Ethernet-over-VDSL and legacy WAN technologies.

The Alpine 3800 series switches can be configured to scale from 8 to 56 Ethernet-over-VDSL ports. Even higher density can be achieved with a combination of Ethernet-over-VDSL and traditional copper or fiber Ethernet ports. The FM-8Vi module provides Ethernet-over-VDSL at 10 Mbps full-duplex on each port, up to 2,500 feet.

This product line has been significantly enhanced through the addition of Extreme’s 3^rd Generation technology, Triumph, which adds market leading density/performance characteristics and sophisticated ingress-based rate shaping commensurate with the Alpine’s positioning as a low cost high density edge device for both Metro and Enterprise deployment. Triumph is fully hardware, or “backwards,” compatible with Extreme’s existing “Inferno” chipset that has been deployed in this platform for several years. This promotes excellent investment protection and continued low cost of ownership. The Alpine switch can be an extension of Extreme’s Unified Access Architecture with a new 24 port module that delivers Power over Ethernet and management for integrated and secure wireless LAN connectivity.

ExtremeWare® Software

ExtremeWare® software is the embedded operating system software that is featured on all of our switches. It delivers the robust switching and routing protocol support, management, control and security needed on current enterprise and service provider networks. Its standards-based, multi-layer switching and policy-based Quality of Service give network managers the tools needed to optimize network capacity with consistent fault-tolerant behavior.

Extreme Networks recognized in early 2000 that a new software architecture would be needed as converged IP networks begin to drive more and more mission-critical traffic onto a single network infrastructure. Culminating more than 3 years of research and development efforts, ExtremeWare® XOS delivers revolutionary

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breakthroughs and industry leading capabilities that further the state-of-the-art in networking technology: Scalability, Resiliency, Security and Extensibility. ExtremeWare® XOS was made available to customers in December 2003. It provides a revolutionary software foundation that for the first time delivers adaptability, scalability and increased responsiveness for enterprise networks through its uniquely open, extensible architecture.

Sales, Marketing and Distribution

We conduct our sales and marketing activities on a worldwide basis through a two-tier distribution channel utilizing distributors, value-added resellers and our field sales organization. A majority of our sales are currently made to partners in our distributor and reseller channels. The first tier consists of a limited number of independent distributors that sell primarily to resellers and end-user customers. The second tier of the distribution channel is comprised of a large number of independent resellers that sell directly to end-user customers. In addition, Extreme utilizes its field sales organization to sell direct to end-user customers, including large global accounts.

Strategic Alliances. In November of this past fiscal year we entered into a mutual, non-exclusive, comprehensive strategic alliance with Avaya Inc. Avaya designs, builds and manages communications networks for more than one million businesses worldwide, including 90 percent of the Fortune 500. Focused on businesses large to small, Avaya is a world leader in secure and reliable IP telephony systems and communications software applications and services. Avaya and Extreme are jointly developing and marketing converged communications solutions as part of this multi-year, multimillion-dollar strategic alliance.

Avaya is also reselling Extreme Networks’ data networking products and will provide comprehensive planning, design, implementation and management services support through Avaya Global Services. Significant sales wins already garnered through this relationship include Radio Shack and Wynn Resorts.

Distributors. We have established several key relationships with leading distributors in the electronics and computer networking industries. We intend to maintain these relationships with distributors who may offer products or distribution channels that complement our own channels. Each of our distributors resells our products to reseller and end-user customers. The distributors enhance our ability to sell and provide support to end-user customers, especially global accounts, who may benefit from the broad service and product fulfillment capabilities offered by these distributors. No distributor or customer accounted for more than 10% of our net revenues in fiscal 2004. One distributor, Tech Data Corporation, accounted for 11% and 15% of our net revenues in fiscal 2003 and fiscal 2002, respectively. Distributors are generally given privileges to return a portion of inventory to us for the purpose of stock rotation and participate in various cooperative marketing programs to promote the sale of our products and services. We defer recognition of revenue on all sales to these distributors until the distributors sell the product, as evidenced by a monthly sales-out report that the distributors provide to us. (See “Revenue Recognition” in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.)

Value-Added Resellers, or VARs. We have entered into agreements to sell our products through more than 300 resellers in approximately 50 countries. Our value-added resellers include regional networking system resellers, resellers who focus on specific vertical markets, network integrators and wholesale distributors. We provide training and support to our resellers and our resellers generally provide the first level of support to end-users of our products. Our relationships with resellers are generally on a non-exclusive basis. Our resellers are not given privileges to return inventory and do not automatically participate in any cooperative marketing programs. We generally recognize product revenue from our reseller and end-user customers at the time of shipment, provided that persuasive evidence of an arrangement exists, delivery has occurred, the price of the product is fixed or determinable and collection of the sales proceeds is reasonably assured. When significant obligations or contingencies remain after products are delivered, such as installation or customer acceptance, revenue and related costs are deferred until such obligations or contingencies are satisfied. (See “Revenue Recognition” in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.)

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Field sales. We have trained our field sales organization to support and develop leads for our value-added resellers and to establish and maintain a limited number of key accounts and strategic customers. To support these objectives, our field sales force:

As of June 27, 2004, our worldwide sales and marketing organization consisted of 328 individuals, including directors, managers, sales representatives, and technical and administrative support personnel. We have domestic sales offices located in 22 states and international sales offices located in 25 countries.

International sales

International sales are an important portion of our business. In fiscal 2004, sales to customers outside of the United States accounted for 61% of our consolidated net revenues, compared to 60% in fiscal 2003 and 67% in fiscal 2002. These sales are conducted primarily through foreign-based distributors and resellers managed by our worldwide sales organization, in addition to direct sales to end-user customers, including large global accounts. The primary markets for sales outside of the United States include the countries in Western Europe and Japan. Although not a significant component of total revenues to date, we have also achieved sales growth in the People’s Republic of China, countries throughout the Asia-Pacific region, South America, Canada and Mexico.

Marketing

We have a number of marketing programs to support the sale and distribution of our products and to inform existing and potential customers and our distributors and resellers about the features and performance of our products. Our marketing efforts include participation in industry tradeshows, technical conferences and technology seminars, preparation of competitive analyses, sales training, publication of technical and educational articles in industry journals, a publicly available website, web-based training courses, advertising and public relations. In addition, we are developing e-commerce processes and systems for our resellers, distributors and end-user customers. We also submit our products for independent product testing and evaluation.

Backlog

Our products are often sold on the basis of standard purchase orders that are cancelable prior to shipment without significant penalties. In addition, purchase orders are subject to changes in quantities of products and delivery schedules in order to reflect changes in customer requirements and manufacturing capacity. Our business is characterized by seasonal variability in demand and short lead-time orders and delivery schedules. Actual shipments depend on the then-current capacity of our contract manufacturer and the availability of materials and components from our vendors. We believe that only a small portion of our order backlog is non-cancelable and that the dollar amount associated with the non-cancelable portion is immaterial. Accordingly, we do not believe that backlog at any given time is a meaningful indicator of future revenue.

Customer Support and Service

We offer modular and comprehensive extended warranty service contracts under our ExtremeWorks service solutions to help protect our customers’ network investments and support their business goals. The markets we address, including enterprises and service providers, all seek higher reliability and maximum uptime. Our goal is

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to serve as a knowledgeable and experienced service partner who can tailor service solutions to meet the specific business needs of our customers. For the provision of on-site hardware support to customers we have strategic partnerships in place with International Business Machines, Inc. and Equant N.V. Expenses related to these agreements are recorded in services cost of revenue on our consolidated statements of operations. We also maintain relationships with Flextronics International, Ltd. and Solectron Corporation for the handling of product returns and repairs covered by our warranty and service contracts in various locations worldwide. We provide our customers with our standard, limited hardware warranty, which is typically 12 months from the date of shipment to end-users and 14 months from the date of shipment to channel partners, and our 90-day software warranty. Warranty expenses related to these relationships are recorded in product cost of revenue on our consolidated statements of operations. Support contract expenses related to these relationships are recorded in services cost of revenue on our consolidated statements of operations.

Our service offerings are as follows:

ExtremeWorks Professional Services. We specialize in providing solutions and consultative services to improve network productivity in all phases of the network lifecycle – planning, design, implementation, operation and optimization management. The professional services include customized and packaged consulting services that assist customers in meeting their objectives for applications support, uptime and cost control. Our network architects develop and execute customized hardware deployment plans to meet individualized network strategies. These activities include the management and coordination of the design and network configuration, resource planning, staging, logistics, migration and deployment. We also provide customized training and operational best practices documentation to assist customers in the transition and sustaining of their networks.

We offer our customers a variety of technical consulting services, including:

ExtremeWorks and PartnerWorks Support Programs. Our support programs are designed to support a broad range of customer service requirements for our resale partners and direct customers. We meet the service requirements of our customers and channel partners through Technical Assistance Centers, or TACs, located in Santa Clara, California; Utrecht, Holland; Noida, India; and Tokyo, Japan. Our technical engineers assist in diagnosing and troubleshooting technical issues regarding customer networks. This is part of our effort to ensure maximum network uptime and performance. Regional systems engineers serve as on-site engineering resources

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to provide consultative support and advice for network operation on an as needed basis. Development engineers work with the TACs to resolve product functionality issues specific to each customer.

We utilize the Internet to distribute and obtain information from our customer base as an integral part of our service solution. This allows us to keep customers informed of the latest updates and developments at Extreme Networks, and contains up-to-date information and technical documentation enabling customers to research issues and find answers to technical questions. Special features include a TAC database to obtain troubleshooting assistance and information for configuring software, diagnosing hardware, and researching network issues. On-site support services are available in most locations worldwide for customers who require a more comprehensive level of service and support.

ExtremeWorks Education. Leveraging our Authorized Training Partner strategy, Extreme Networks licenses partners to provide education through certified technical experts that teach classes dealing with all of our products. The classes cover a wide range of topics such as installation, configuration, operation, management and optimization – providing customers with the necessary knowledge and experience to successfully deploy and manage our products in various networking environments. Classes are scheduled and available at numerous locations worldwide.

Manufacturing

We outsource the majority of our manufacturing and supply chain management operations as part of our strategy to maintain global manufacturing capabilities and to reduce our costs. We conduct quality assurance, manufacturing engineering, document control and test development at our main campus in Santa Clara, California. This approach enables us to reduce fixed costs and to flexibly respond to changes in market demand.

We have a strategic partnership with Flextronics International, Ltd. for the manufacture of our OEM products in San Jose, California and Guadalajara, Mexico. Flextronics’ manufacturing processes and procedures are ISO 9002 certified. Our commitment with Flextronics is formalized through a one-year contract. We design and develop the key components of our products, including ASICs and printed circuit boards. We determine the components that are incorporated in our products and select the appropriate suppliers of such components. Flextronics utilizes automated testing equipment to perform product testing and burn-in with specified tests. Together we rely upon comprehensive inspection testing and statistical process controls to assure the quality and reliability of our products. We intend to regularly introduce new products and product enhancements that will require us to rapidly achieve volume production by coordinating our efforts with those of our suppliers and contract manufacturer.

Although we use standard parts and components for our products where it is appropriate, we currently purchase several key components used in the manufacture of our products from single or limited sources. Our principal single-source components include:

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Our principal limited-source components include:

Purchase commitments with our single- or limited-source suppliers are generally on a purchase order basis. A number of vendors supply standard product integrated circuits and microprocessors for our products. Any interruption or delay in the supply of any of these components, or the inability to procure these components from alternate sources at acceptable prices and within a reasonable time, may have a material adverse effect on our business, operating results and financial condition. Qualifying additional suppliers can be time-consuming and expensive and may increase the likelihood of errors.

We use our forecast of expected demand to determine our material requirements. Lead times for materials and components vary significantly, and depend on factors such as the specific supplier, contract terms and demand for a component at a given time. We order many of our materials and components on an indirect basis through our contract manufacturer.

Research and Development

The success of our products to date is due in large part to our focus on research and development. We believe that continued success in the marketplace will depend on our ability to develop new and enhanced products employing leading-edge technology. Accordingly, we are undertaking development efforts with an emphasis on increasing the reliability, performance and features of our family of products, and designing innovative products to reduce the overall network operating costs of customers.

Our product development activities focus on solving the needs of enterprises, service providers and Metro markets. Current activities include the continuing development of a next-generation chipset aimed at extending the capabilities of our products. Our ongoing research activities cover a broad range of areas, including, in particular, 10 Gigabit Ethernet, Metro and Internet routing software, ASIC design, network management software, broadband access equipment and wireless networking equipment.

We have developed a new module operating system (ExtremeWare® XOS) which has been designed to provide high reliability and availability. This architecture allows us to leverage a common software architecture across different hardware and ASIC implementation. We have utilized our ongoing investment in this area to develop and introduce new products and enhancements, and we intend to continue with this approach for future products and enhancements.

As of June 27, 2004, our research and development organization consisted of 235 individuals. Our expenditures for research and development in fiscal 2004, fiscal 2003 and fiscal 2002 were $58.1 million, $58.0 million and $61.5 million, respectively.

Competition

The market for switches is part of the broader market for networking equipment, which is dominated by a few large companies, particularly Cisco Systems. In addition, there are a number of large telecommunications equipment providers, including Alcatel and Nortel Networks, which have entered the market for network equipment, particularly through acquisitions of public and privately held companies. We expect to face increased competition, particularly price competition, from these and other telecommunications equipment providers. We also compete with other public and private companies that offer switching solutions, including Enterasys Networks, Foundry Networks, Inc., Huawei Technologies, 3Com Corporation, Hewlett-Packard Company and Dell Computer Corporation. These vendors offer products with functionality similar to our products or provide

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alternative network solutions. Current and potential competitors have established or may establish cooperative relationships among themselves or with third parties to develop and offer competitive products. Furthermore, we compete with numerous companies that offer routers and other technologies and devices that traditionally have managed the flow of traffic on the enterprise or Metro networks.

Some of our current and potential competitors have longer operating histories and substantially greater financial, technical, sales, marketing and other resources, as well as greater name recognition and a larger installed customer base, than we do. As a result, these competitors are able to devote greater resources to the development, promotion, sale and support of their products. In addition, competitors with a large installed customer base may have a significant competitive advantage over us. We have encountered, and expect to continue to encounter, many potential customers who are confident in and committed to the product offerings of our principal competitors, including Cisco Systems. Accordingly, these potential customers may not consider or evaluate our products. When such potential customers have considered or evaluated our products, we have in the past lost, and expect in the future to lose, sales to some of these customers as large competitors have offered significant price discounts to secure these sales.

We believe the principal competitive factors in the network switching market are: