Content Distribution Overview DYXnet ONE VAS: Content Distribution Overview (Version 20091215) <Name> <Title>

Challenges and Solutions

Challenges Case 1: within PRC Every end user goes through undetermined Internet path to the source server All traffic are destined to the source server, i.e. bandwidth consumption and loading of source server is very high Some users may experience poor performance if the traffic needs passing through different Internet provider network

Challenges Every end user goes through undetermined Internet path to the source server All traffic are destined to the source server, i.e. bandwidth consumption and loading of source server is very high Users in PRC may experience poor performance if the source server is located outside PRC Case 2: across PRC

Solutions Optimize the access path between end users and source server Add more servers to lower source server loading Upgrade bandwidth Place servers in different cities / provinces in PRC to improve performance Content Distribution service meets all the above conditions!

DYX’s Anwser: Content Distribution

Content Distribution What is Content Distribution and how it works? It consists of THREE major components: Smart DNS (Global Load Balancing) – redirect requests to the optimal server (CDN node), typically one that is nearest to the end user CDN node – geographically dispersed caching machines, act as source server to provide content

Smart Bandwidth (cont.) What is Content Distribution and how it works? Infrastructure 105 CDN nodes on national backbone 50Gbps converged bandwidth Node Clusters consist of 4U Xeon-based Blade Server 7x24x365 proactive network monitoring & maintenance Internet network coverage over China Telecom, China Netcom, China Mobile & China Unicom

Smart DNS DNS lookup www.abc.com End user’s machine asks DNS server (typically provided by ISP): What is the IP address of www.abc.com? DNS lookup DNS server asks the Smart DNS server. www.abc.com * Hostname lookup steps simplified.

Smart DNS DNS lookup www.abc.com DNS server answers the end user. Smart DNS server will reply IP address of www.abc.com nearest to end user, depending on the IP address of DNS server used. www.abc.com

Types of Content Static content www.abc.com Static content Content is cached when passing through to speed up future requests www.abc.com Cached Cached

Types of Content Static content Content is cached when passing through to speed up future requests www.abc.com www.abc.com Cached Cached

Types of Content Static content Content is cached when passing through to speed up future requests www.abc.com Cached www.abc.com Cached Cached Cached

Types of Content Static content Content is cached when passing through to speed up future requests www.abc.com Cached Cached www.abc.com Cached Cached

Types of Content Dynamic content Not cacheable www.abc.com Dynamic content Not cacheable Traffic going through optimized path can be much faster than default access path www.abc.com

Types of Content Dynamic content Not cacheable Traffic going through optimized path can be much faster than default access path www.abc.com www.abc.com

Types of Content Dynamic content Not cacheable Traffic going through optimized path can be much faster than default access path www.abc.com www.abc.com

Types of Content Dynamic content Not cacheable Traffic going through optimized path can be much faster than default access path www.abc.com www.abc.com

Types of Content Mega download - Content is pushed to CDN node to speed up all requests - Especially effective for large files www.abc.com Cached Cached Cached Cached

Types of Content Mega download www.abc.com Mega download - Content is pushed to CDN node to speed up all requests - Especially effective for large files www.abc.com www.abc.com Cached www.abc.com Cached www.abc.com Cached Cached

Types of Content Video streaming www.abc.com Video streaming - Video stream is split in CDN nodes so many users can be served by single session from source www.abc.com www.abc.com www.abc.com www.abc.com

Content Distribution

Results Virtually there are many servers providing the same service at the same time All CDN nodes are distributed in different cities and provinces in PRC with various Internet service providers All incoming traffic from PRC are redirected to the nearest CDN server in PRC End users can always enjoy the best performance Case 1: within PRC

Results Virtually many servers are providing the same service at the same time All CDN nodes are distributed in different cities and provinces in PRC with various Internet service providers All incoming traffic from PRC are redirected to the nearest CDN server in PRC, requests outside PRC are redirected to the source server End users can always enjoy the best performance Case 2: across PRC

Portal Site Login screen:

Portal Site Daily utilization report:

Portal Site Weekly utilization report:

Portal Site Monthly utilization report:

Case Study Case Study 1: Gigabyte Source server placed in Diyixian SH IDC, subscribed bandwidth is 30Mbps Single source server serving users from everywhere in PRC

Case Study Before using Content Distribution: Bandwidth utilization of source is full! (95th percentile is 29.878Mbps) All users’ requests are destined to source and access speed is restricted because of the bandwidth limit. Server loading is heavy.

Case Study Bandwidth utilization at source is lowered Using Content Distribution: Bandwidth utilization at source is lowered Bandwidth bottleneck removed Higher access speed and download time is reduced

Case Study Using Content Distribution: Bandwidth utilization of source dropped 82%! (95th percentile is 5.531Mbps) Server loading is relieved also.

Case Study Using Content Distribution: Users’ requests are redirected to CDN nodes instead of source, bandwidth consumption raised dramatically to 84.23Mbps (95th percentile). Bandwidth limit at source is no longer a bottleneck.

Case Study City Download time before using Content Distribution End-user experience: City Download time before using Content Distribution Download time using Content Distribution % improved Beijing 642 514 19.94% Shanghai 1207 765 36.62% Chengdu 669 491 26.61% Shenzhen 405 399 0.01% Download speed improved significantly: Download time reduced up to 36%!

Case Study Source server placed in HK or TP Case Study 2: Online gaming Source server placed in HK or TP Performance is poor for requests from PRC Bandwidth utilization and loading of source server is high

Case Study Requests from users in PRC are redirected to CDN nodes Using Content Distribution: Requests from users in PRC are redirected to CDN nodes Traffic from CDN nodes to source server goes through Diyixian backbone, performance is greatly improved for both static and dynamic content Static content is cached in CDN nodes to enhance access speed and further lower bandwidth consumption of source

Case Study Source server placed in HK or TP Case Study 3: Video Streaming Source server placed in HK or TP Video streaming is not smooth for users in PRC Source server can’t be placed in PRC due to legal issue

Case Study Using Content Distribution: Video session is split in CDN node, many users can be served by single session from source server Traffic from CDN node to source server goes through Diyixian backbone, performance is ideal for time-sensitive applications like video streaming CDN nodes can be configured to download video stream from other CDN node or source server Source server is not placed in PRC, no legal concerns

Pricing Model Charging scheme: by bandwidth (per Mbps) Notification email will be sent to pre-registered contacts when peak utilization is over subscribed bandwidth If 95th percentile of actual utilization is over subscribed bandwidth, exceeded utilization will be charged per Mbps Works best with DYXnet ONE IDC and Content Distribution Plus

Corporate Overview

Background Founded in 1999 by former senior management of PSINet HK Operating in Hong Kong (HQ), Mainland China, Taiwan, Singapore and Vietnam 400+ staff in 12 offices (plus 1,000+ staff in IP Call Centres) 6 IDCs (HK, BJ, SH, TP) & 4 IP Call Centres (BJ, SH, GZ) 37 cities with Network POPs in Asia with services covering 700 cities Serving over 6,500 MPLS VPN clients’ sites and hosting over 4,000 clients’ servers Over 2,500 enterprise clients across regions The only foreign JV in PRC has nationwide IP VPN / IP Call Centre / IDC licenses

International Certifications ISO 9001 since 2007 ISO 20000 since 2007 ~100% engineers with CCNA/CCDA/CCNP/CCIP/MCSE certifications 20%+ project managers with PMP/CPMP certifications Cisco EUC Specialized Partner since 2006 Cisco Premier Partner since 2006 Hong Kong SuperBrands 2005 Microsoft Certified Partner since 2002 Cisco Powered Network since 2000 Polycom Solution Partner since 2006 Nationwide IP VPN / IP Call Centre / IDC licenses in PRC

Awards 2009 The Best MPLS VPN Service Provider 2009 Outsourced Contact Centre of the Year (Inbound) 2009 Southern China Contact Centre of the Year (over 100 Seats) 2009 Off-shore Contact Centre of the Year 2009 China Best Outsourcing Contact Centre of the Year   Cisco FY2009 Q2 Best Contributor Award of UC 2008 – 2009 China Best Outsourcing Service Provider Top 50 Service Outsourcing Providers in China 2008 2008 Service Outsourcing Company in China (Top 50) 2008 Best Contact Centre in China 2008 Inbound Contact Centre of the Year (Off-shore) 2008 Outbound Contact Centre of the Year (Outsourced) 2008 Polycom Best Partner Award 2008 The Best Contact Centre in China (Outsourced)

Our Vision: FAST Combine Forward-thinking ICT strategies with world-class Technologies and Agile services to help customers and partners Synergize for business success. FAST Agility Synergy Technology Forward-thinking

DYXnet Business Empowerment Network <Note:Follow the animation, the speaker should list the elements of DYXnet Business Empowerment Network one by one first.> Global Network Infrastructure World-class ICT services International Business Partnership <Then, following with the elaboration:> DYXnet Business Empowerment Network This powerful architecture integrates strong foundation of robust infrastructure, extensive business partnerships and world-class ICT services. With DYXnet’s Business Empowerment Network, we deliver advanced ICT technologies to customers and partners throughout Greater China, while also bringing China’s many opportunities to our customers and partners around the world.

37 Point-of-Presences covers more than 700 cities in Asia Committed Service Level Agreement (SLA) quality Around-the-clock network monitoring, management and reporting Operate with Industry’s best-practices - ISO20000 and ISO9001

Network & Operation

World-class ICT Services

Industry Solutions Retail Logistic ONE VPN Retail - Network connectivity for shops Co-location – High availability for Retail Application Call Centre Outsourcing – Agent, CRM or Hotline Outsourcing IP Telephony – IP PBX for self-built hotline support internally ONE VC – multi-site HD VC accessibility with shops Logistic ONE VPN Enterprise / Corporate / Corporate Plus - Network connectivity for main office and branches ONE VPN Retail – Network connectivity for outpost and satellite offices ONE VC – Reduce the cost of overseas communications and business travel with multi-site HD video-conferencing

Industry Solutions Manufacturing Financial Services ONE VPN Enterprise / Corporate / Corporate Plus – Network connectivity for main office, branches and factories Internet Plus – Premium Internet access for PRC factories ONE VC – Reduce the cost of factory and office managers’ communications and business travel with multi-site HD video-conferencing Financial Services ONE VPN Retail – Network connectivity for shops Co-location – High availability for web content and application Content Distribution – Customers experience enhancement Content Distribution Plus – VIP customers experience enhancement ONE VC – Boost productivity and decision-making by hosting internal meetings between branch offices via HD video-conferencing

Industry Solutions Web Hosting Providers Online Game Providers Co-location – Facility management and business enablement Online Game Providers Clean Bandwidth – Business protection and continuity from network attack Call Centre Outsourcing – Agent, CRM or hotline outsourcing ONE VC – Strengthen your collaboration with regional distributors, business partners and suppliers using a low-cost HD video-conferencing system

International Business Partnership Cisco Premier Partner Cisco Express Unified Communications (EUC) Specialized Partner Microsoft Certified Partner Polycom Solution Partner Other Local Solutions Partners

Our Competitive Advantages The leading Greater China ICT Service Provider with over 10 years experience Professional and seasoned service team Solid experience in PRC with local expertise and strong Telco relationship Comprehensive and flexible solutions Competitive and flexible pricing scheme Flexible billing options

Thank You!