1. Page: 1 The Evolution of Networking The next step in products & solutions Jan Hof EMEA Product Marketing Manager

2. Page: 2 Switch market overview Layer-3 Switching is on the move….. The Western European LAN switch Forecast by Layers, 2000- 2006 Source: IDC, 2002

3. Page: 3 ….. requiring continuous enhancements WAN Public Services Your IT Infrastructure 10 GbE MPLS IPv6 Higher Density SNMPv3 Wireless Security VoIP Storage

4. Page: 4 Extreme’s Technology Strategy Closet Replace a router with a switch Summit 4 or 8 Channel GE 1xGE / 8xFE MAC 16 Gbps, 12 Mpps Wire-speed L2/L3 QoS - 802.1p Campus Inferno 8, 16, or 32 Channel GE 4xGE / 16xFE MAC 64 Gbps, 48 Mpps Wire-speed L2/L3 QoS- 802.1p + Diffserv Enhanced Classification/ Filtering/Shaping Accounting Extend application infrastructure across the campus & metro Next Gen 8 Channel 10GE 10x1GE / 1x10GE MAC 200 Gbps, 120 Mpps Hardware MPLS, IPv6 LPM for 512K routes Virtual router support Next Gen OS Extend the application infrastructure everywhere Cloud Global Infrastructure

5. Page: 5 Product overview (1)

6. Page: 6 Product overview (2)

7. Page: 7 Product & Technology Strategy Corporate Data Center 24 Summit24e3 Summit24e2 Desktop Applications 48i Advanced Applications Access Distribution Core

8. Page: 8 Stackable Objectives 24 Summit24e3 Summit24e2 Desktop Applications 48i Advanced Applications Stackables End-to-end LAN solution Increase leverage Single consistent feature set New technology Access

9. Page: 9 Modular Chassis Objectives Advanced Applications Distribution Core Access BlackDiamond Offer the greatest investment protection of all industry core chassis Continued application of improved core technology Rebuild product with stability, quality and high availability Alpine Market leading modular chassis to serve Enterprise and Metro advanced edge and distribution layers Eases the deployment of wireless and voice-over-IP

10. Page: 10 Software Objectives Corporate Data Center 24 Summit24e3 Summit24e2 Desktop Applications 48i Advanced Applications Access Distribution Core Embedded Software Become significant core intellectual property To build a reputation for performance, reliability and innovation To lead the industry in core chosen metrics To provide a core platform on which value added functionality can be quickly and reliably implemented Management Manage Extreme Networks products directly through dedicated applications Enabling management by industry leading third party management applications Simplest, easiest, single vendor management capabilities in the industry

11. Page: 11 Product & Technology Strategy Corporate Data Center Content Networking “Trojan horse” platform into large enterprise data centers Platform for deep packet inspection applications To continue to develop and cost reduce the technology New Technologies The “R” in “R&D” To allow new and innovative technologies to be developed Streaming Media Accelerator Storage Networking Security To dedicate x% of R&D to new technology investment that has no defined payback in FY03

12. Page: 12 New Technology Investigation Implementation Investigation Competitive necessity Potential Growth Driver Powered line Supports VOIP, WAP Wireless Services Security & Mobility 10GE – LAN/WAN MPLS-Metro & Enterprise Streaming Media Storage Networking WAN Routing Market IPv6 Content Networking OSS/NMS

13. Page: 13 Roadmap Summary Q2CY03Q1CY03 Q4CY02 Q3CY03Q4CY03 Powered Line 10/100 In line power Alpine Summit 32 pt powered line (6-10 pts in current chassis) L3 powered line stackable Strategic Initiatives MSM64Si G24Ti G16Xi GM16X GM16T BD Alpine 16xGE aggregation blade 24x100/1000 access blade CPU Perf./Failover 16x10/100/1000 access blade 16xGE aggregation blade Increased Competitiveness Rate Shaping/Counters BD 10GXi 10GE modular I/f (XENPAK) BD PXM Content/AppSwitching Blade BD IPv6 on NP NP based IPv6 (will be shipped) Further Investment Next Generation & Future Investigation Alpine ASM Alpine MPLS Blade Mariner Next Gen very high density GE + 10GE

14. Page: 14 Conclusion The objective of Extreme Networks: –Be the clear alternative in the large enterprise market –Be the leader in the emerging Metro Ethernet Market Fueled by our Vision: –Ethernet Everywhere –IP over Ethernet everywhere –Complete and consistent feature set at wire-rate speed –Total value solutions ; –To remain the world technology leader in Ethernet

15. Page: 15 Thank You