1. Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Announcement Date: May 4, 2010 Ridgeline ® Service Advisor Monetize Control Visualize

2. 2 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Long History of Ethernet Innovation Strong Partner for Carrier Ethernet Solutions patents issued/pending worldwide 2020 10 + 200200 30 % 24 x 7 years as a NASDAQ-listed company of revenue from carriers on average ports shipped around the world countries with Extreme Networks ® presence 2 Ethernet Everywhere ® 5050 global TAC & professional services

3. 3 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Introducing Ridgeline Service Advisor Pro-active Service Management Software (Q3, 2010) 3 Ridgeline Service Advisor integrates Soapstone Networks’ intellectual property with EPICenter to create a new Service Management Software Ridgeline Service Advisor: -Provisions new services quickly and easily -Enhances subscriber experience -Simplifies traffic engineering Ridgeline Service Advisor: -Provisions new services quickly and easily -Enhances subscriber experience -Simplifies traffic engineering Ridgeline Service Advisor Enables Carriers to Monetize their Networks by Shifting from Re-active Circuit Monitoring to Pro-active Service Management Massive broadband growth and IP service convergence requires carriers to take a pro-active approach to Service Fulfillment, Service Assurance and Service Engineering

4. 4 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. The State of the Carrier Market 4 Carriers Converging Multiple Services on Common Ethernet Transport Networks Must Monetize their Networks to Survive, Compete & Thrive

5. 5 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Advances Also Create Challenges Service Management “Glue” Matters More Than Ever 5 Triple Play Wholesale Business VPN, DIA Mobile Backhaul Residential Mobile Subscribers Dropping Land-Line Voice Pressure to Deliver More from Existing Assets Increased Complexity Delays Repair Delays in Provisioning Impacts Revenue Internet Business Model Driving Wholesale Services Increased Traffic Engineering Complexity Impacts Efficiency of Network Assets SubscriberServices Offered Service and Transport Management Ethernet Transport Service Management Tolerance for Service Interruption is Very Low. Subscribers More Willing to Switch Providers Increased Competition Multiplies the Cost of Provisioning Delays, Outages, and Network Inefficiencies Business Wholesale Carriers Top Spend is on Customer Acquisition & Retention

6. 6 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Carrier Services Life Cycle 6 Monetizing the Network Requires a New Approach to Service Management

7. 7 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Mobile Backhaul Metro Core Wholesale Triple Play Business Ethernet Ethernet Access and Aggregation Network Subscriber 7 Ridgeline Enables Pro-Active Service Management Summit X480 Summit ® X480 BlackDiamond 20804 10 GE Ridgeline Service Advisor Black Diamond ® Increase Network Efficiency with Simplified Traffic Engineering Improve Subscriber Loyalty with Pro- Active Service Management Service Engineering Ridgeline Benefits: Requirements:     Accelerate Revenue with Point-and-Click Provisioning   Service Fulfillment: Service Assurance: 20808 ExtremeXOS® Operating System

8. 8 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. 8 1.Point-and-click provisioning model 2.Service management model (E- LAN & E-Line) Service path visualization Fault to service correlation CAC Resource allocation model Interoperability framework 1Point-and-click provisioning model 2Service management model (E-LAN & E-Line) Service path visualization Fault to service correlation CAC Resource allocation model Interoperability framework Scripting Network visualization and monitoring Statistics and reports GUI Fault management Inventory, software and configuration management Secure communication Role based access 1.Scripting 2.Network visualization and monitoring Statistics and reports GUI Fault management Inventory, software and configuration management Secure communication Role based access Introducing Ridgeline Service Advisor

9. 9 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Ridgeline Service Advisor Helps Carriers Monetize their Network 9 Enabling the Shift from Re-active Circuit Monitoring to Pro-Active Service Management

10. 10 Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. BlackDiamond 20808 BlackDiamond ® 20804 32 x Line-Rate 10 GE 64 x Line-Rate 10 GE 100GE Ready Ethernet Access Central Offices 24 or 48 x10/100 E, 2x GE Up 24 or 48xGE Access, 4x 10 GE Up Carrier Ethernet Transport Portfolio MEF Certified Solutions Ethernet Aggregation Central Offices Metro Core Central Office Ridgeline Service Advisor Ridgeline Service Advisor Summit X250e Summit X480 Summit ® X650 Up to 32 x10 GE 10 24 or 48xGE Access, 4x 10 GE Up Summit X480 Ridgeline Service Advisor the Latest Addition to the Extreme Networks Service Provider Portfolio ExtremeXOS® Operating System

11. Extreme Networks Confidential and Proprietary. © 2008 Extreme Networks Inc. All rights reserved. Thank You!