DCN Advantage Digital China Co Ltd Digital China

DCN Advantage

Digital China Co. Ltd. Digital China is a top Chinese creative high-tech company group. • Split from Lenovo Group in 2000. • 2001. 6. 1, IPO in Hong Kong stock Market (Public Stock code 861 HK). • Dedicated in providing high class E-commerce products, solutions and services • Business IT products distribution, system integration, IT service and switch manufacturer • The largest IT Service integrator and the largest IT products distributor in china

Prize ü Forbes 2009 Asia Pacific Top 50 best large listed companies ü Information Week 2008, "China Business Technology 100" first ü NIEC "2008 Best Corporate Information Total Solution Provider Award”

Business Milestone Revenue FY 2000 -FY 2008 nc ear y r pe e s a re ge ra Ave The data from each year avenue report i ％ 3 2

Digital China Network Overview ISO 14001 ISO 9001/9002 IPv 6 Phase II • Leading networks manufacturer • Aims at providing the advanced products and solutions to customers • Standards are “customer oriented, technique driving, service antecedence ” • Customers on Operator，Enterprise，SOHO and OEM market

Human Resource Others 6% R&D and service 55% Supply chain 9% Sales & Marketing 30% At end of 2009, DCN has over 800 employees and consists of • Doctor/Master Degree: 35%, Bachelor Degree: 65% • 10 years+ experience: 15%, 5 -10 years experience: 40%, 3~5 years experience: 35%, fresh: 10%

R&D Capabilities- 10 Years • R&D 10 years key products 2008 2007 2006 2005 10 G Multi-core Firewall 100 G LAN Switch Network Traffic Manage System IPv 6 LAN Switch Family in China IPv 6 Phase II Certification in China 2004 2003 DCNOS + NP Based Firewall DCNOS based Chassis Switch DCNOS Based Security Switch DCNOS Based L 3 Switch 2002 2001 2000 1999 1997 DCNOS Based Modular Router DCNOS Based L 2 LAN Switch DCNOS Based Access Router DCNOS Based SOHO Router 2005 DCNOS Software R&D

DCN Advantage • • DCNOS Platform Full Range of Switch Product Family Technology breakthrough Solution

DCNOS Platform Features ØIGMPv 1 P：BGP、LDP ØIGMPv 2 ØIGMPv 3 PE：LDP、MPBGP、RT/RD ACL、EXP QOS ØIGMP v 1 Snooping Ø DVMRP ØIGMP v 2 Snooping Ø PIM-DM CE：VRF、OSPF ØIGMP v 3 Snooping Ø PIM-SM ØMLD v 1 Ø PIM-SSM Ø PIM-DM FOR IPV 6 Ø PIM-SM FOR IPV 6 Ø IPV 4 multicast over IPV 6 tunnel ØMLD v 2 IPv 4/v 6 ØMLD v 1 Snooping ØMLD v 2 Snooping MPLS ØMVR for ipv 4 and ipv 6 ØIGMP Proxy Ø Multicast source detect Ø Multicast controlled received DCNOS Multicast HA CPU filter DHCP snooping option 82 ICMP limited ISP 1 üOSPF 802. 1 X URPF ISP 2 s. Flow Equipments üMRPP Security üLink trunk üECMP üPBR üVRRP Firmware backup Networks AM and Strong ACL MAC-binding üLACP(802. 3 AD) üSTP/RSTP/MSTP üVRRP v 3

DCN Advantage • • DCNOS Platform Full Range of Switch Product Family Technology breakthrough Solution

Switch Market Opportunities GE to Desktop: FE port evolved to GE port, good opportunity for GE and 10 GE devices Layer 3 to Edge: the access device with L 3 feature can meet the requirements of network intelligence and security Ethernet network position migrated: matured in LAN, rapid growth in MAN, migrating to WAN gradually Intelligent network: highly sensitive to services, high security

Product Coverage DCRS 9800 DCRS 7600 Core Layer Chassis DCRS 5750 DCS 4500 L 2+ Aggregation Switch Centralized Technologies DCNOS protocol stack ASIC DCRS 5950 DCRS 5960 DCRS 5980 L 3 GE Aggregation Switch Security UTM Firewall DCS 3950 DCS 3650 L 2 Smart FE Switch POE Switch

DCN LAN Switch Portfolio Chassis Switch GE L 3 Switch(Copper) DCRS-5980 -28 T-DC/Po. E DCRS-9816 DCRS-9808 DCRS-7604 DCRS-5980 -52 T-DC/Po. E DCRS-5960 -28 T/28 T-DC/Po. E DCRS-5960 -52 T/52 T-DC/Po. E GE L 2 Switch DCRS-5950 -52 T DCRS-5950 -28 T DCS-4500 -26 T-Po. E DCS-4500 -26 T DCS-4500 -50 T DCRS-5750 -28 T/28 T-DC/Po. E DCNOS INSIDE DCS-4500 -24 T(V 2) GE L 3 Switch(Fiber) DCRS-5980 -28 F DCRS-5980 -52 F DCS-3650 -8 T DCS-3650 -16 C DCS-3950 -28 C DCS-3950 -52 C DCS-3650 -8 C/DC/Po. E DCS-3650 -24 T DCRS-5950 -24 DCRS-5950 -26 FE L 3 Switch FE L 2 Switch DCS-3950 -26 C DCRS-5750 -52 T/52 T-DC/Po. E DCS-3950 -28 CT-Po. E DCS-3650 -16 T DCS-3650 -26 C/DC/Po. E DCRS-5650 -28 C DCRS-5200 -28 DCRS-5650 -52 C DCRS-5200 -52 Network Management System Link Manager AM Link Manager NM

DCRS-9800 series backbone switch DCRS-9808 DCRS-9816 ü 8 business slots with 2 manage slots ü 16 business slots with 2 manage slots üMaximum 768 Gbps Switch Capacity üMaximum 1. 54 Tbps Switch Capacity üMaximum 420 Mpps IPv 6 forwarding performance üMaximum 950 Mpps forwarding performance Wire speed MRPP üMaximum 32 10 GE/ 192 GE/GT üMaximum 64 10 GE/ 384 GE/GT Features: MPLS BGP RIPv 1/V 2, OSPFv 2, BGPv 4, PBR ØRich Routing Protocols: MAN DHCP Campus LAN Dual Stack Core Y Y Agg Y Y Acc Y Y ØStrong QOS: IPv 4 QOS, IPv 6 QOS, DSCP, 8 queues ØIPv 6 Phase II certification ØMPLS/MPLS VPN/ VPLS HA ØAbounded Multicast features: PIM-SM/DM/SSM, 10 G MVR (Multicast VLAN Register), Under Controlled Multicast ØEnvironment Protect: FCC, CE, Ro. HS

DCRS-7600 series core switch DCRS-7604 ü 2 business slots with 2 manage slots or 3 business slots with 1 manage slots üMaximum 160 Gbps Switch Capacity DCRS-7608 ü 8 business slots with 2 manage slots üMaximum 320 Gbps Switch Capacity üMaximum 238 Mpps forwarding performance üMaximum 119 Mpps forwarding performance Multi-business üMaximum 32 10 GE/ MRPP 384 GE/GT üMaximum. IPv 6 13 10 GE/ 188 GE/GT Features: ØRich Routing Protocols: RIPv 1/V 2, OSPFv 2, BGPv 4, PBR MPLS BGP MAN DHCP Campus LAN Dual Stack Core N Y Y Y Agg Y Y Acc Y Y ØStrong QOS: IPv 4 QOS, IPv 6 QOS, DSCP, 8 queues ØIPv 6 Phase II certification ØAbounded Multicast features: PIM-SM/DM, MVR (Multicast VLAN Register), HA Under Controlled Multicast 10 G ØEnvironment Protect: FCC, CE, Ro. HS

DCRS-5980 Series L 3 switch Features: ØIPv 6 Phase II DCRS-5980 -52 T/52 T-POE/52 F ØRIPv 1/v 2, OSPF, BGP 4, PBR Ø 44 10/1000 Base-T+ 4 GE Combo ØIPv 4 QOS, IPv 6 QOS, DSCP, 8 queues, Ø 2 Slots and max 4 10 GE Ø 176 Gbps/131 Mpps ØPIM-SM/DM, MVR (Multicast VLAN Register), Under Controlled Multicast Ø 32 k MAC/ 12 k Routing Table / 4 K ACL ØStrong ACL and VLAN technology ØPOE support max 15. 4 W power supply ØMRPP ring protect technology IPv 6 ØAC/DC dual power supply Wire speed MRPP ØMPLS MCE support ØPOE support BGP DCRS-5980 -28 T/28 T-POE/28 F MPLS ØFCC CE Ro. HS Ø 20 10/1000 Base-T+ 4 GE Combo Ø 2 Slots and max 4 10 GE AC+DC Ø 128 Gbps/96 Mpps 4*10 G Core Fiber MAN Campus LAN Dual Stack N Y Po. E Y Y Ø 32 k MAC/ 12 k Routing Table / 4 K ACL Agg Y Y ØPOE support max 15. 4 W power supply Acc N N Y Y ØAC/DC dual power supply

DCRS-5960 Series L 3 switch Features: ØIPv 6 Phase II DCRS-5960 -52 T/52 T-POE ØRIPv 1/v 2, OSPF, BGP 4, PBR Ø 44 10/1000 Base-T+ 4 GE Combo ØIPv 4 QOS, IPv 6 QOS, DSCP, 8 queues, Ø 2 Slots and max 4 10 GE Ø 176 Gbps/131 Mpps ØPIM-SM/DM, MVR (Multicast VLAN Register), Under Controlled Multicast Ø 8 k MAC/ 512 Routing Table / 1 K ACL ØStrong ACL and VLAN technology ØPOE support max 15. 4 W power supply ØMRPP ring protect technology IPv 6 ØAC/DC dual power supply Wire speed ØPOE support MRPP ØFCC CE Ro. HS BGP DCRS-5960 -28 T/28 T-POE OSPF Po. E Ø 20 10/1000 Base-T+ 4 GE Combo Ø 2 Slots and max 4 10 GE AC+DC Ø 128 Gbps/96 Mpps 4*10 G Core MAN Campus LAN Dual Stack N Y Y Y Ø 8 k MAC/ 512 Routing Table / 1 K ACL Agg Y Y ØPOE support max 15. 4 W power supply Acc N N Y Y ØAC/DC dual power supply

DCRS-5950 Series L 3 switch Features: Ø 8 k MAC/ 512 Routing Table / 1 K ACL ØIPv 6 Phase II ØRIPv 1/v 2, OSPF, BGP 4, PBR ØIPv 4 QOS, IPv 6 QOS, DSCP, 8 queues, DCRS-5950 -28 T ØPIM-SM/DM, MVR (Multicast VLAN Register), Under Controlled Multicast 24 GT+4 GE SFP Combo+ 2 10 G+2 10 G stack ØStrong ACL and VLAN technology 128 Gbps/96 Mpps ØMRPP ring protect technology AC/DC Support ØFCC CE Ro. HS MAN Campus LAN Dual Stack DCRS-5950 -52 T Core N N Y Y 48 GT+4 GE SFP Combo+ 2 10 G+2 10 G stack Agg N Y Y Y Acc N Y Y Y 176 Gbps/131 Mpps AC/DC Support

DCRS-5950 -24/26 L 3 switch Features: ØIPv 6 Phase II ØRIPv 1/v 2, OSPF, BGP 4, PBR ØIPv 4 QOS, IPv 6 QOS, DSCP, 8 queues, DCRS-5950 -24 ØPIM-SM/DM, MVR (Multicast VLAN Register), Under Controlled Multicast Ø 16 GE SFP+8 GE Combo Ø 48 Gbps/36 Mpps Ø 16 k MAC/ 12 k Routing Table / 1. 5 K ACL ØAC/DC IPv 6 support ØStrong ACL and VLAN technology ØMRPP ring protect technology Stackable MRPP ØFCC CE Ro. HS BGP DCRS-5950 -26 AC+DC Ø 16 GE SFP+8 GE Combo+ 2 10 G OSPF MAN L 3+ Campus LAN Dual Stack N N Y Y 2*10 G Agg Y Fiber Y Y Y Acc N N Y Y Core Ø 88 Gbps/66 Mpps Ø 16 k MAC/12 k Routing Table / 1. 5 K ACL ØAC/DC support

DCRS-5750 Series L 3 switch Features: ØIPv 6 Phase II DCRS-5750 -52 T/52 T-POE ØRIPv 1/v 2, Static routing Ø 44 10/1000 Base-T+ 4 GE Combo ØIPv 4 QOS, IPv 6 QOS, DSCP, 8 queues, Ø 2 Slots and max 4 10 GE ØIGMP snooping v 1 -v 3, MLD snooping v 1/v 2, Ø 176 Gbps/131 Mpps Ø 8 k MAC/ 256 Routing Table / 2 K ACL ØMVR (Multicast VLAN Register), Under Controlled Multicast ØPOE support max 15. 4 W power supply ØStrong ACL and VLAN technology IPv 6 ØAC/DC dual power supply Wire speed Qo. S ØMRPP ring protect technology ØPOE support RIP DCRS-5750 -28 T/28 T-POE Po. E ØFCC CE Ro. HS High Density Ø 20 10/1000 Base-T+ 4 GE Combo Ø 2 Slots and max 4 10 GE AC+DC Ø 128 Gbps/96 Mpps 4*10 G Core MAN Campus LAN Dual Stack N N Ø 8 k MAC/ 256 Routing Table / 2 K ACL Agg N Y Y Y ØPOE support max 15. 4 W power supply Acc Y Y ØAC/DC dual power supply

DCS-4500 series L 2+ switch Features: Ø 8 K MAC/ 4 K Vlan Ø 512 ACL for IPv 4 and IPv 6 DCS-4500 -26 T-POE Ø 24 GT POE+ 4 GE SFP (combo) Ø 52 G bps/ 39 M pps Ø 250 W Power supply IPv 6 ØL 2 -L 4 ACL and QOS ØIGMP v 1 -v 3 snooping/ MLD v 1/v 2 snooping ØUnder control Multicast/ MVR (Multicast vlan register) ØDHCP Server /Snooping / Client Ø 802. 1 D/ 802. 1 W / 802. 1 S Ø 802. 1 X/ ARP security / MAC security / DHCP Qo. S DCS-4500 -26 T Øs. FLOW support Ø 24 GT+ 4 GE SFP (combo) ØQin. Q support Ø 52 G bps/ 39 M pps ØSNMPv 1/v 2/v 3 / Web management/ Telnet/ CLI Full GE Po. E ØRadius/ Tacacs+ High Density ØFCC CE Ro. HS ACL DCS-4500 -50 T Ø 48 GT+ 4 GE SFP (combo) Ø 100 G bps/ 75 M pps Q-in-Q MAN Campus LAN Dual Stack Core N N Agg N N Y Y Acc Y Y

Full-GE DCRS 59/57/45 Series Features l Enterprise-class services l High Availability: IP Routing, VRRP, RSTP/MSTP, Link Aggregation l Security: ACL, port security, RADIUS/TACAC+, 802. 1 x, SSH, SNMPv 3 l Advanced Qo. S: Layer 2– 4 Qo. S with Co. S/DSCP, Traffic shape, different schedule algorithm ( WRR, SP , WRED, RED) l Voice VLAN and POE l High performance l Gigabit Ethernet and Fast Ethernet configurations provide l Wire-speed switching and routing l Distributed Layer 2 and Layer 3 l Ease of management/deployment l One IP address and configuration file for entire stack l Extends Web-based management suite to Layer 2/3/4 services l Return of Investment l Full GE and High density port l Flexible Copper and Fibber Combo

DCS-3950 series L 2+ switch Features: ØWire speed forwarding Ø 8 K MAC/ 4 K Vlan/ 1 k ACL DCS-3950 -28 C 24 FE+ 4 GE SFP (combo) ØL 2 -L 4 ACL and QOS ØQOS support SP; WRR; SWRR; DWRR; SDWRR Ø 8 queues for GE/ 4 queues for FE ØIGMP v 1 -v 3 /IGMP V 1 -v 3 snooping DCS-3950 -26 C 24 FE+ 2 GE SFP (combo) IPv 6 ØDHCP server/ client/ snooping ØMVR (Multicast vlan register); Under control Multicast DHCP Qo. S Ø 802. 1 X; ARP guarding; MAC binding ØRadius ØQin. Q DCS-3950 -52 C GE Combo OAM/ CLI ØPo. E SNMPv 1/v 2 /WEB manage/ Telnet 48 FE +4 GE Combo ØFCC; CE; Ro. HS ACL DCS-3950 -28 CT-POE 24 FE POE+ 2 GE SFP (combo)+ 2 GT MAX Power 250 W Q-in-Q 802. 1 x LAN Dual Stack MAN Campus Core N N Agg N N Acc Y Y

DCS-3650 series L 2+ switch Features: DCS-3650 -26 C/26 C-POE(AC/DC) 24 FE+ 2 GE SFP (combo) POE max 370 W ØWire speed forwarding Ø 8 K MAC/ 4 K Vlan/ 512 ACL ØL 2 -L 4 ACL and QOS ØQOS support SP; WRR; SWRR; DWRR; SDWRR DCS-3650 -8 C/8 C-POE(AC/DC) 8 FE+ 1 GE SFP (combo) POE max 160 W Ø 8 queues for GE/ 4 queues for FE ØIGMP v 1 -v 3 /IGMP V 1 -v 3 snooping ØDHCP server/ client/ snooping ØMVR (Multicast vlan register); Under control Multicast DCS-3650 -16 C IPv 6 16 FE+ 2 GE SFP (combo) Ø 802. 1 X; ARP guarding; MAC binding DHCP Qo. S ØRadius ØSNMPv 1/v 2 /WEB manage/ Telnet / CLI DCS-3650 -24 GE Combo 24 10/100 Base-T ports ACL DCS-3650 -16 ØPOE support max 15. 4 W power supply OAM Po. E for ØDC/AC ØFCC; CE; Ro. HS Silent 802. 1 x LAN Dual Stack MAN Campus Core N N DCS-3650 -8 Agg N N 8 10/100 Base-T ports Acc Y Y 16 10/100 Base-T ports

Product Advantage • • DCNOS Platform Full Range of Switch Product Family Technology breakthrough Solution

DCNOS IPv 6 Basic Protocol IPv 6 basic protocol stack、address suit ND（Neighbor Discovery) ICMPv 6 Security Tunnel Manual Tunnel、ISATAP 6 to 4 Tunnel IPv 4 over IPv 6 Tunnel Multicast Tunnel ACL for IPv 6 u. RPF for IPv 6 TACACS+/ RADIUS Telnet/SSH for IPv 6 IP+MAC binding DCNOS Management NTP for IPv 6 DHCP v 6、SNMP for IPv 6 DNS v 6、FTP/TFTP for IPv 6 Ping /Trace route v 6 IPv 6 MIB support for SNMP Routing Static Routing、OSPFV 3 RIPng、BGP 4+ IS-ISv 6、ECMP PBR、Routing re-publish Multicast MLDv 1/v 2、MLD snooping PIM-SMv 6、PIM-DMv 6 PIM-SSMv 6、DCSCMv 6

Ethernet Ring - MRPP • MRPP-Multi-layer Ring Protection Protocol – Min 50 ms Ring refresh – Ethernet based ring protocol – Real time state detect – Auto refresh Master Node Sent Flush Transit Node Hello packets Master port √ Slave port Transit Node Sent LINK-DOWN Transit Node

Security Application security Anti-attack p Anti ARP scanning p ARP Guard p ICMP limited p Broadcast, multica st, unicast control p Bpdu guard and root guard p Unreachable ICMP block p Link aggregation p Anti IP packets DOS attack p 802. 1 X p Chipset anti DOS p PVLAN, Voice vlan, MAC vlan p Admin authentication by AAA p HTTPS/SSL support p SNMP customer limited p CPU filter p Image upgrade detect and production p Product hardware syslog p Firmware backup p RAM, Flash ECC check p Protect port p MAC-binding p DHCP snooping option 82 p DHCP relay option 82 p illegal multicast source detect p multicast vlan register p AM and Strong ACL p MAC limited p Routing protocol MD 5 authentication p ARP binding p SFlow p IPv 4 count limited p RADIUS/TACACS+ p Block hole route p URPF

Seltctive Qin. Q Per service per tunnel Metro Ethernet Backbone 1. Qin. Q VLAN 1000 DCRS 5980 / 5960 VLAN 2000 - Easing the increasing deficiency of public network VLAN ID resources; - Users plan private VLAN IDs and will not conflict with public network VLAN IDs; - Providing small-sized MANs or enterprise networks with a relatively simple layer 2 VPN solution. VLAN 3000 DCRS 5750 2. Selective Qin. Q - External VLAN tag can be encapsulated according to different users, services and priority levels. - Implement different bearer solutions for various services. CPE IP Phone VLAN 100 Internet VLAN 200 STB VLAN 300 Internet VLAN 100 STB VLAN 300 VLAN 200

Qo. S DCRS 5980 / 5960 DCRS 5750 DCS 5750 24*SPF Other IP TV Internet IP Phone 8*FE 1*Combo CPE VLAN 200 Internet - Service mark - Service schedule Classification Planning Qo. S DCS 3650 IP Phone - Service queue DCRS 5750 DCS 5750 VLAN 100 - Service recognize VLAN 300 - Policing on port -Bandwidth control - Policing on VLAN -Traffic assign -Business guarantee STB Policing Quality of Service

DCN Advantage • • DCNOS Platform Full Range of Switch Product Family Technology breakthrough Solution

Campus Network Solution R&D Network Sales Department Administration Network R&D Department DCRS 5900 AAA OA System DCRS 3900 Production Department DCRS 7600 SCM FW DCRS 5900 DCS 3600 Public Server Network ERP DCRS 9800 DCRS 5900 10 G VRRP MRPP DCRS 7600 Production Network Highlight MPLS/Routing Network Segment ISP 1 DCRS 5900 ISP 2 DCRS 7600 Administration Network High Performance： 10 G platform, Link Aggregation High Reliability：VRRP, MRPP, MSTP/RSTP/STP DCRS 5900 Service Aware：End-to-end Application-aware Qos High Scalability: Module slot, Stackable, High density High Security: 802. 1 x, DHCP Snooping, u. RPF, Production Network R&D Department R&D Network

SMB Solution Server Farm DCRS-5950 Core Layer Switch DCFW-1800 S-V 2 Gigabit Firewall INTERNET/ INTRANET Network Reliability VRRP, MSTP/RSTP/STP DCS-3950 Stackable access Switch Po. E Application-aware Service Voice Vlan Separation of voice and Data Advanced Traffic Classification Abundant Traffic Policy Traffic Management DCS-3950 Stackable access Switch Po. E Voice VLAN 802. 1 x + Guest VLAN Security Policy Control Security Automatic User Security Authentication, Authentication by port and MAC, Enough ACL etc.

FTTx solution Functionality Metro Ethernet Backbone DCRS 5980 / 5960 • IP ARP inspection DCRS 7604 / 7608 • IP Source Guard DCRS 5750 Less than OSPF DCRS 5750 DCRS 5950 -26 5 cascade DCRS 5980 DCS 5750 DCRS 5980 DCRS 5750 24*SFP 24*GT 24*SFP CPE • Rate limiting inbound/outbound (per port/vlan basis for Shaping & Policing concurrently) • IGMP snooping DCS 3650 24*FE 2*GE COMBO • PVLAN’s on Access & Trunk ports (user /port isolation) • Layer 2 & 3 (IPv 4/Ipv 6) packet filtering (ACL) DCS 3650 8*FE 1*GE COMBO • Broadcast storm control • Port security (Mac address limitation & MAC protecting) Group Line DCS 3650 • BPDU guard CPE 16*FE 2*GE COMBO CPE • DHCP Snooping • Option-82 inserting (configurable) • Feature processing for IPv 4 & Ipv 6 IP Phone Internet STB/IPTV • PPPo. E+ • Flexible Qin. Q WEB, CLI, Telnet, RSPAN makes management convenient DHCP Snooping, Radius, Tacacs+, PPPo. E+, u. RPF, IP source guard, 802. 1 x makes network safer VCT, Port loopback detection, LLDP, ULDP makes diagnosis easy 64 K steps rates, port rate limit, traffic monitor, SFLOW constructs administrable, controllable, and business network

Thanks http: //www. dcnetworks. com. cn/en