NTT WEST s Approach to IPv6 Networking
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1 NTT WEST s Approach to IPv6 Networking Ichiro MORIHARA Research and Development Center Technology Department Nippon Telegraph and Telephone West Corporation February 24, 2005 February 24, 2, 2005
2 Agenda 1. Current Trends in IP System Services 2. Current Issues in NTT WEST s Regional IP Network and an Outline of the New IP Network 3. NTT WEST s Regional IPv6 Network and its Future Plans 2
3 1. Current Trends in IP System Services 3
4 Broadband Access Penetration in Japan Spread of of broadband access in in Japan has has been steadily increasing. About million million Broadband subscribers in in Japan. Japan. (September, 2004) 2004) No. of subscribers (Million) FTTH CATV ADSL Mar.2002 Sep.2002 Mar.2003 Sep.2003 Mar.2004 Sep M Source:Ministry of Internal Affairs and Communications 4
5 Recent Trends in IP-based Services Various Services Boosted Boomedare Using Inexpensive, High-Speed Broadband Access. IP Broadcasting Service Broadband Content Distribution using Dedicated Appliances (STB) VoD and real-time IP Broadcasting services by Multicast (ex.) 4th MEDIA Service (Plala Networks) HIKARI-phone (optical phone) Service fixed-line quality VoIP service (ex.)ip Phone services for apartment (NTT WEST/EAST) Home Appliances Support for bi-directional, real-time communication between appliances via the Internet (ex.) Validation experiment of Home Appliance connection management (NTT Communications) 5
6 2. Current Issues in NTT WEST s Regional IP Network and an Outline of the New IP Network 6
7 No. of subscribers Transition of the Number of FLET S Subscribers (NTT-West) (Million) FLET S ISDN(64K) B FLET'S FLET'S ADSL FLET'S ISDN FLET S ADSL (1.5M) ADSL 8M type B FLET S (100M) ADSL 12M type ADSL 24M type B FLET'S Family 100 ADSL 47M type ADSL 40M type B FLET'S Wireless Mar.2000 Mar.2001 Mar.2002 Mar.2003 Mar.2004 Sep.2000 Sep.2001 Sep.2002 Sep.2003 Sep
8 Various FLET S Services on the Regional IP Network Video-Phone (FLET S Communication) Control Servers Content Streaming (FLET S Square) VPN Service (FLET S Group) FLET S ISDN/ADSL, B FLTE S (Fixed Access) The Internet Regional IP NW (IPv4) CUG Internet Connectivity (supplied by ISP) ISP1 (IPv4) Station, Airport ISP2 (IPv4) Wireless Access (FLET S Spot) AP Remote Access (FLET S Office) Enterprises Connects up to ISP by PPPoE Target ISP is selectable by user Hotel etc. AP IEEE802.11b (Wireless 2.4G) 8
9 Current Issues in the Regional IP Network Routing is not optimized for P2P communications Drastic growth in traffic (Unicast traffic, MPEG-2/4, etc.) Rise of delay/ bandwidth sensitive applications (IP/TV Phone,etc.) Server NAT connections force limitations to P2P applications Virus Infection, etc. PPPoE Mail, etc. Regional IP NW (IPv4) The Internet ISP Security concerns on Permanent connections (Virus Infection, etc.) Data size increasing (file download etc.) Bandwidth occupied by power-users in the Besteffort environment (P2P filesharing,etc.) 9
10 Expectations for the Regional IP Network (1/2) Application Aspect Effective transfer of massive data Versatile form of communications Improvement in security Provide plug-n-play functionality for easy use Support variety of users and variety of terminals 10
11 Expectations for the Regional IP Network (2/2) Technical Aspect Fixed IP address allocation Utilize IPv6 s broad address space Optimal routing for P2P communication (not by tunneling) IP Multicasting support QoS support (priority queuing and fair queuing) 11
12 3. NTT-WEST s Regional IPv6 Network and its Future Plans 12
13 Current Services on the Regional IPv6 Network High Quality Video Phone Content Streaming (FLET S v6 Cast) Internet Connectivity (supplied by ISP) The Internet ISP1 (IPv4) ISP2 (IPv4) QoS IP Multicast Control Servers Regional IPv6 NW GW GW Connects up to ISP by tunneling Target ISP is selectable by user CTU CTU BR STB STB FLET S HIKARI Premium (Optical Access Only) CTU: Customer network Terminating Unit Security Protection FLETS v6 Appli (for FLET S ADSL, B-FLET S ) BR: Broadband Router 13
14 Technology used in the Regional IPv6 Network(1/3) Internet Connection Authentication and address allocation (IPv4) by ISP is performed through t the Regional IP Network (IPv6), then connected to ISP-network Target ISP is selectable by user The Internet ISP Provider1 (IPv4) GW ISP Provider2 (IPv4) GW CTU Establish connection between ISP and users by tunneling. Target ISP is selectable by each user Service Platforms Regional IPv6 NW Connect to NTT-WEST provided services via IPv6 14
15 Technology used in the Regional IPv6 Network(2/3) QoS: Fairness control among users Necessity (Background) Large amount of heavy-user traffic restricts network use of other users Heavy User Fairness control (Fair Queuing) Technologies for Solutions Discard Packets Congestion Ensures that all users get their fair share of bandwidth, even on congestion Web access, file downloading, content streaming, etc. Maintain Minimum Bandwidth Heavy User 15
16 Technology used in the Regional IPv6 Network(3/3) Multicast Necessity (Background) Need to decrease bandwidth consumption by unicast traffic Router Multicast Receiver Technologies for Solutions Using IPv6 multicast, NW bandwidth can be effectively used FLET S v6 CAST Provides a contents distribution platform, IPv6 multicast-enabled Content providers connect distribution servers and provide services Content Providers NTT WEST Router Unicast Server Router Distribution Server (owned by content providers) Multicast router Multicast Server Multicast router IP Multicast Multicast router 16
17 Overview of FLET S HIKARI Premium Features Internet Connection High Quality Video-phone Security Features FLET S v6 CAST (multicast content distribution) Note: Acceptance of subscription began from December 24, 2004 (Fri), for users in service areas. Service planned from March,
18 High Quality Video phone Video phone Low delay, high quality communications by pure IPv6. File transfer and Instant Message Supports exchange of large files or instant messages directly between users Answering machine leaveing voice/video messages when absent Possible to send large files (even when too large sending by ) CTU Server Message File Regional IP NW (v6) high quality video/audio phone CTU Possible to leave messages on the server (answering service) Pure IPv6 communication without using PPPoE 18
19 Security Features Installs security tools (software) in user PCs. Updates (virus pattern files, etc.) performed automatically from the Regional IPv6 Network Virus protection, illegal access/harmful site/spam mail blocking and privacy protection Provided for both IPv4 and IPv6 communication. The Internet Regional IPv6 NW Mail,etc. Virus Infection, etc. CTU Protects from virus infection, etc. 19
20 Bandwidth design of FLET S HIKARI Premium Subscriber optical line is shared by multiple users Maximum speed: 100Mbps (bidirectional) Optical section planned to upgrade to 1Gbps (1000Mbps). Customer network Terminating Unit (CTU) Line Termination Unit Optical Splitter NTT WEST Optical Splitter Center terminating unit Regional IPv6 Network Provider Internet Best Effort, max.100mbps (shared by multiple users) 20
21 Providing IPv6 Applications to Current FLET S Access FLET S v6 Appli Optional service of B FLET S and FLET S ADSL Add IPv6 connectivity to the current FLET S access line services Same application provided as FLET S HIKARI Premium Service started in limited areas from December 24, 2004 Reliable Security Security High Quality Video phone Video Phone Content Streaming IP broadcasting on TV Regional IPv6 NW BR STB FLET S ADSL / B FLET S User 21
22 Future of NTT WEST s Regional IPv6 Network Reliable, Safe, Trustworthy Expansion of new network services As a carrier, we take a proactive approach in realizing a genuine wide area IPv6 network Scalability, Security, and Wide Bandwidth Provide various services such as content streaming, video communication and IP phones, utilizing the QoS control functions End-to-End quality control Obtain a secure communication environment for company and home networks using IPv6 technology CUG, Mobile IP 22
23 Appendix:QoS-enabled Content Streaming Experiment Overview Term: February to May 2004 Target Area: Osaka city (excluding a part of the region) Number of Monitors: approx. 350 (limited to B-FLET S subscribers) Streaming type: VoD unicast (more than 300 titles in total),broadcasting retransmission by multicast (9ch) MPEG-2 TS 4Mbps System Overview Digital_IRD Streamer VOD Streaming server Regional IPv6 Network IP multicast enabled Fair control, priority control enabled B FLET S ONU HUB LAN cable Custom STB AV cable Distribution Center Can connect to ISP simultaneously Remote control TV 23
24 Thank you for your kind attention. 24
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