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MRV Communications 17th Annual Needham Growth Conference January 13, 2015 NASDAQ: MRVC

Safe Harbor Statement This presentation contains statements regarding future financial and operating results, management's assessment of business trends, and other statements about management's future expectations, beliefs, goals, plans or prospects and those of the market segments in which MRV is engaged that are based on management's current expectations, estimates, forecasts and projections about MRV and its consolidated businesses and the respective market segments in which MRV's businesses operate, in addition to management's assumptions. Statements regarding future financial and operating results, which are not statements of historical facts, constitute forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements are not guarantees of future performance nor guarantees that the events anticipated will occur or expected conditions will remain the same or improve. These statements involve certain risks, uncertainties and assumptions, the likelihood of which are difficult to assess and may not occur, including risks that each of its business segments may not make the expected progress in its respective market, or that management's long-term strategy may not achieve the expected results. Therefore, actual outcomes, performance and results may differ from what is expressed or forecast in such forward-looking statements, and such differences may vary materially from current expectations. For further information regarding risks and uncertainties associated with MRV's businesses, please refer to the "Management's Discussion and Analysis of Financial Condition and Results of Operations" and "Risk Factors" sections of MRV's SEC filings. MRV assumes no obligation to and expressly disclaims any obligation to update or revise any forward-looking statements contained in this document to reflect new information or future events or developments after the date any such statement is made. 2

3 MRV Empowers the Optical Edge                       

4 Investment Highlights Penetrating high growth market segments in transition Delivering differentiated technology  Growing large and strategic customers and expanding optical edge addressable market  Investing prudently to build market position Poised to capitalize on growth opportunities  Launching innovative packet and optical products  Positioning assets strategically for coming network transformation  Improving financial position, strengthening balance sheet and streamlining cost structure  Repositioned company with new sales structure and strong executive team

5 CLOUD, MOBILITY and VIDEO Drive More Investments Shifting Enterprise focus to cloud-based offering Exponential growth in 4G/5G mobile networks (users & M2M) Exponential growth in unicast and multicast video Transition to Software-Driven Application Aware Networks Infrastructure Investments in Metro Networks • Optical for Transport • Packet for Services • Cost and Capacity Drive Network Designs

6 Focused on the Metro Edge

7 Targeting High Growth Metro Segments Future addressable markets based on OptiPacket new series Developing Key New Products for New Total Addressable Market: $15B* * Estimated based on Infonetics research H1 2014 market analysis and existing and projected product availability Ethernet Access over Fiber, $675M WDM Metro, $3.44 EAD over Fiber WDM Metro Total Addressable Market Today $4.11B

• Lifecycle service orchestration • Enable intelligent service delivery • Visualize network capability • Packet and optical • Reduce elements • Efficient service integration • Enable new services & revenue streams • Improve time to revenue • Reduce OpEx and enable service agility 8 MRV Network Equipment Solutions Blueprint Next-Gen Network as a Service - Agile, Scalable, On-demand -

TRENDS Network layer convergence and virtualization Mobility, cloud-based business and consumer services drive investments & transformation in Metro networks Data Centers move closer to Metro OTT cost sensitive & fast delivery model Programmable packet and optical metro solutions • Powered and orchestrated with intelligent software • Making CSP networks smarter, agile and serve applications on-demand High-capacity scalable, cost-effective • 10G/100G optical solutions • Industry leading low-power, space & operational simplicity Supporting Software Defined Networking (SDN) • Unified open source software • Programmable products MRV PRODUCT SOLUTIONS 9 MRV Product Positioning Packet-Oriented Services Fiber-based Networks

10  Target Applications – Data Center Interconnect – Optical Transport Wavelength Services  Value proposition – Remarkable scalability from small to Mega data centers – Programmable for dynamic on-demand Metro services – Lowers critical operational expenses (power, real estate and integrated test tools) OptiDriver® – Next-Gen Optical Transport Platform Winning for Flexibility in Design and Application First multi-million dollar contract in Q3’14 with N.A. communications service provider Market Opportunity $3.44B OptiDriver® 100G 10G SAN * * Estimated based on Infonetics research Y2014 market analysis (excluding Indo-China’s region) 46

11  Target Applications – Metro Service Edge Aggregation – Converged Packet-optical services  Value proposition – Enables delivery of multi-layer services over same metro edge to foster packet optical convergence – Distributed hardware and software architecture for SDN and NFV applications OptiPacket® (OP-X) Next-Gen Packet Optical Platform Early rollout phase  Positive initial feedback  Customer tests through early 2015  Longer sales cycle that will take multiple years OptiPacket® (OP-X) Opens New Market Segments in Metro Service Edge Strategically positioned for network transformation to convergence and virtualization Market Opportunity >$10B * Estimated based on Infonetics research Y2014 market analysis (excluding Indo-China’s region) – totals IP Edge, CESR and POTP 100G 10G *

12 Critical Solutions for Global Customer Base Powering Cloud Connectivity, High-Capacity Business Services, Mobile Backhaul and World’s Largest Data Centers Additional unnamed customers including multiple Tier 1 carriers and global content delivery providers  Target geographies: North America, Europe and parts of Asia Pacific  Verticals: Content Delivery Network operators, wireline communications service providers, data center operators, Web 2.0 customers, enterprises and governments

13 Telstra CE 2.0 network named most innovative service - Won Broadband InfoVision Award  APAC first certified Carrier Ethernet 2.0 service  World’s #2 certified Carrier Ethernet 2.0 service  Wholesale offering to 120 carriers  Zero-touch new operational model Telstra Case Study: Connecting World’s Largest Networks Australia’s Largest Telecom Service Provider Upgrading its Nationwide Network MRV solution enables critical new services and reduces operational costs

Technology POC Ecosystem 14 MRV Uncovers New Capabilities in SDN and NFV SDN-enabled Application Aware Virtual Customer Premises Equipment (CPE) New service creation in virtualized environment at the CPE, on-demand service, CAPEX reduction comparing to classic solutions that require additional devices for application analysis Demo at SDN & OpenFlow World Congress showcases hybrid SDN solution that offers application-aware advanced services without upgrading customer premises equipment Virtualization Definition 2 3 1

15 Industry Recognition and Customer Wins Technology Awards  Telstra CE 2.0 powered by MRV wins most Innovative service award  Lightwave Innovation Award  American Business Award  Network Product Guide “Best Product Finalist” for OptiDriver®  The Carrier Ethernet World Congress “Best Carrier Ethernet product in APAC”  Broadband Communities Magazine “Top 100 Broadband Companies”- 2013, 2014 Significant Customer Wins & Partnerships  Multi-million dollar OptiDriver® contract for large regional N.A. communications service provider  Telstra: new Tier 1 nation-wide carrier Ethernet deployment  Growing number of multi-national Content Delivery Network deployments and data center wins  Numerous 4G mobile backhaul wins  Member of Open Networking Foundation  Enlarging list of CSP and enterprise customers

Networking Products • Partner with suppliers of routers and switches Installation and Maintenance • Provide services at the end customer locations Operations Support • Manage technical support centers Network Integration: Tecnonet  Selling value-added integration, support services and related third-party products configured in system solutions within Italy  Serving the largest Italian telecom carriers  Profitable and cash flow positive Tecnonet Consistently Delivering in a Challenging Market 16 Service Providers Enterprises Governments

MRV in Transition 17 $42.3 $43.1 $43.2 * Q1’14 includes $1.2M in warrant revaluation, sales realignment, and consulting costs; Q3’14 includes $0.5M adjustment to service inventory. 40.4% 36.9% 35.1% ($3.8) ($1.1) ($0.4)

Making Prudent Investments in Our Future 18 ▪ Savings from restructuring of G&A primarily reinvested into product development & engineering ▪ Finding additional ways to simplify business and reduce costs continues to be a key focus $17.1 $15.9 $15.1 NE NI Corporate

Balancing Shareholder Return & Financial Strength 19  Balance sheet remains strong and positioned to support future growth  New share repurchase program for up to $8M announced on Dec. 16, 2014 Between Nov. 2011 and Nov. 2014, MRV has Returned $140.1M to Shareholders in Dividends and Share Repurchases

Driving Transformation and Maximizing Value 20  Well positioned for the fundamental shift in metro network needs  Focused on optimizing product offerings and investing for growth  Network Equipment top line growth with large and growing customer base/vertical markets  Highly scalable business targeting sustainable profitability through improved efficiencies Excellent Revenue and Profit Potential