1. Sales Guide of DGS-3700 Series SSPD, D-Link HQ, Apr. 2009 D-Link Confidential. Internal Use Only.

2. Product Competition Overview - Positioning Highlights - Technology Briefing Product Application Guide Competitive Comparison & Analysis - Product Position/Main Competitors - Key Comparison - Art of the War Agenda

3. D-Link Confidential Positioning Highlights - What is DGS-3700 for? DGS-3700 series is a purpose-build product, mainly for the ETTH/MAN infrastructure. 2 different port configurations for different applications Telecommunication Houses Wiring Closet in office building Outdoor Cabinets Home Users DGS-3700-12 DGS-3700-12G Enterprise Users Outdoor Cabinets FE Access Switches 10/100/1000Base-T PortsGE SFP PortsCombo PortsApplication DGS-3700-1284Gigabit Access Switch DGS-3700-12G84Gigabit Aggregation Switch

4. D-Link Confidential Positioning Highlights - What is DGS-3700 for? With special hardware design, DGS-3700 is suitable for following environments: Telecom cabinets Wiring closet in basement/stairway of buildings Wiring Closet Outdoor Cabinet Limited space No air condition Difficult to maintain

5. D-Link Confidential. Internal Use Only. Positioning Highlights - Custom Metro DGS-3700 Series Special hardware design for out door cabinets All interfaces are located in the front panel Up to 65 o C operating temperature Modular power, fan and dust filter AC/DC dual power input, simplifying the maintenance and spare parts control

6. D-Link Confidential. Internal Use Only. Technology Briefing - Function Overview Completed Metro-E software feature L2 VPN: Flexible Q in Q, L2PT, VLAN Translation Advanced IPTV Service: Multicast VLAN and Channel Profiles, Multicast Reporting, Host-based Multicasting High Reliability: E-RPS, LBD Robustness & Security: DHCP/ARP/MIM/DDOS Attack Prevention, Microsoft NAP Access Control: Bandwidth Control, CIR, QoS OAM: 802.1ag, 802.3ah, Y.1731*, Cable Diagnostic, Optical Transceiver DDM MEF 9,14 Certified, IPv6 Ready Logo Phase 2* * Function ready in future F/W release (Future)

7. D-Link Confidential. Internal Use Only. Q-in-Q, or Double VLAN, utilizes double VLAN tags to implement L2 VPN Technology Briefing - 802.1ad L2 VPN: Q-in-Q 802.1Q C-VLAN 802.1Q C-VLAN Q-in-Q S-VLAN Q-in-Q S-VLAN S-VLAN 2 C-VLAN 10 Ethernet-based MAN Provider Bridge C-VLAN 10 S-VLAN 2 C-VLAN 10 S-VLAN 3 C-VLAN 10 S-VLAN 3 C-VLAN 10 C-VLAN 20 S-VLAN 3 C-VLAN 20 S-VLAN 3 C-VLAN 20

8. D-Link Confidential. Internal Use Only. ISM VLAN /MVR CVLAN 10~19 Selective Q in Q DGS-3700-12G VDSL Switch IPTV Partner VoIP Partner PON OLT DES-3526 CVLAN 20~29 Add SVLAN 20 CVLAN 10~19 add SVLAN 10 SVLAN20 SVLAN10 Aggregation Layer Access Layer VoIP VLAN CVLAN 20~29 Allow to add SVLAN tag based on CVLAN or replace the CVLAN with SVLAN Transparent VLAN setting across the ISP network Technology Briefing - Selective Q-in-Q (VLAN Translation)

9. D-Link Confidential. Internal Use Only. Technology Briefing - ISM VLAN Internet V1 V2 V3 V4 V1 V2 V3 ISPs will isolate the streams for different subscribers by VLANs for security reasons. Applications requires continuously multicast stream will cause heavy traffic on the uplink ports of L2 access switch. ISM VLAN register the multicast stream for subscriber VLANs saves lot of bandwidth for uplink. V4 Subscribers Service Provider ISM VLAN V1 V2 V3 V4 V5 V1 V2 V3 V4 Heavy Traffic!!

10. D-Link Confidential. Internal Use Only. Package 3 (Profile 3) Technology Briefing - IGMP Filtering Profiles Providing the flexible channel groups for IP-TV service By simply binding the pre-defined IGMP Filtering profiles to subscriber ports, administrator can modify the service level easily. Package 2 (Profile 2) Package 1 (Profile 1) News 224.0.0.x Sports 228.0.0.x Movie 227.0.0.x Adult 229.0.0.x Finance 225.0.0.x Entertainment 226.0.0.x Subscribers P3 P2 P1

11. D-Link Confidential. Internal Use Only. IGMP / PIM IGMP Snooping Legacy Device DES-3526 Host-based IGMP Snooping Access Layer The bandwidth of Ethernet / VDSL2 allows multiple channels broadcasting in the same time Host-based IGMP Snooping is future proofing for IPTV service: Multiple IPTV under a single port. Channel surfing of one IPTV does not effect others Support fast leave for quick channel switch Multicast Solutions - Host-based IGMP Snooping Aggregation Layer IP STB

12. D-Link Confidential. Internal Use Only. Solutions for Reliability - Ethernet Ring Protection Switching (E-RPS) First industry standard (ITU-T G.8032) on Ethernet ring protection switch Best case support 50ms recovery time for 16-node ring with <1,200 Km circumference Will support multiple rings application in the future Aggregation Ring Access Ring STPRSTPERPS Topology TypeAny Topology Ring Topology Convergence Time30-50 seconds1 second50-200 ms! Master Link Down! Disable Blocking

13. D-Link Confidential. Internal Use Only. Storm Home User Enterprise User Solutions for Reliability - Loopback Detection (LBD) STP or Ethernet Ring Recovery protocols can only cover inside of the telecom network. Users LAN will connect to ISP network directly without any protection. LBD protects the ISP networks from the loop connection in those uncontrolled area Storm Aggregation or GE Access Access Block!

14. D-Link Confidential. Internal Use Only. Solutions for Reliability - IP MAC Port Binding (IMPB) IP MAC Port R r26 A a 2 B b12 C c16 … Router IP: R MAC: r PC-A IP: A MAC: a PC-B IP: B MAC: b PC-C IP: C MAC: c Im PC-A Faked ARP IP: A MAC: c Im Router Youre not PC-A Faked ARP IP: R MAC: c Youre not Router Prevent the ARP spoofing attack to assure the ISP service wouldnt break Prevent the Man-in-the-Middle attack to protect users data from hacker stealing

15. D-Link Confidential. Internal Use Only. Solutions for Reliability - DHCP server Screening For ISPs who did not provide CPE, users may buy home routers to share a single ISP IP for their PCs or laptops. If there is any misconnections on WAN/LAN ports, home gateways will reassign the IP for ISP switch or other users if they renew IP address. DHCP Server Screen can discard the illegal DHCP offer to guarantee the reliability of network. Access Ring 168.95.0.x Home User Home Gateway Home User Home Gateway 192.168.0.x Renew IP ISP DHCP Server Offer 192.168.0.x Offer 168.95.0.x Im 192. 168.0.x Renew IP Im 192. 168.0.x Unable to access Cannot access internet

16. D-Link Confidential. Internal Use Only. Total UNI (User Network Interface) Bandwidth CI R EIR Solutions for Service Level - Bandwidth Management CIR EIR CI R EIR Single user/service per port, with bw limit Port-based Bandwidth Control Multiple users/services per port, with bw limit Flow-based Bandwidth Control Multiple users/services per port, with bw limit, and guaranteed bw CIR – Committed Information Rate EIR – Excess Information Rate CBS, EBS - size of burst window (ms) for allowed CIR / EIR rates EVC1 EVC2 EVC3

17. D-Link Confidential. Internal Use Only. OAM provides fault management and performance monitoring tools for network links and end-to-end EVCs IEEE 802.3ah Link OAM Service OAM (UNI to UNI) IEEE 802.1ag, MEF & ITU Y.1731 Carrier Ethernet Network Ethernet Virtual Connection (EVC) Solutions for Maintenance - Ethernet OAM

18. Thank You