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HiNet IPv6 Experience

HiNet IPv6 Experience. Apr. 11 , 2002 Proposed by Chunghwa Telecom Data Communication Business Group, A Member of TWNIC IPv6 Working Group 中華電信數據通信分公司 朱永正 jonathan@chtd.com.tw. HiNet IPv6 Experience 一、 前言 二 、 IPv6 特性 三 、 HiNet IPv6 位址配發 四 、 HiNet IPv6 Network

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HiNet IPv6 Experience

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  1. HiNet IPv6 Experience Apr. 11 , 2002 Proposed by Chunghwa Telecom Data Communication Business Group, A Member of TWNIC IPv6 Working Group 中華電信數據通信分公司 朱永正 jonathan@chtd.com.tw

  2. HiNet IPv6 Experience 一、 前言 二 、IPv6 特性 三 、HiNet IPv6 位址配發 四 、HiNet IPv6 Network 五、 HiNet Trial Services 六 、問題分享 七、 結論

  3. 一、前言 • APNIC、ARIN及RIPE-NCC自1998年開始發放IPv6 Production Address Space • 1999年二月中華電信(電信研究所)成為6Bone的 Backbone Site， 正式成為我國 IPv6 之發展窗口 • 2000年二月中華電信獲得由APNIC分配之 2001:238::/35 IPv6 商用位址 區段 • 2001年七月中華電信HiNet 開始 Production IPv6 Field Trial，並開始各 項IPv6功能測試與研究 • 2002年一月中華電信加入行政院NICIIPv6推動小組之骨幹建設分組 (數據分公司)及標準測試分組(電信研究所)

  4. 一、前言(cont.) • 目前在IPv6的狀況是其網路層設備技術已漸趨成熟(包含路由協定及轉 換機制-Transition Mechanism)，而相關的標準亦已陸續建立，Service Provider 應可開始相關的基礎網路建設 • 日本在IPv6推動非常積極，政府及民間全力投入， NTT及IIJ均已試用 超過一年，IIJ並已推出商業服務； 韓國在此方面亦積極投入研究及標準的建立工作 • 新一代的IPv6網路的發展 < == 政府的積極推動及民間的熱烈參與

  5. 二、 IPv6 特性 IPv6 Header IPv4 Header

  6. 二、 IPv6 特性(cont.) • Expanded address space • - 128 bits ( 3.4*1038 IP Addresses) • Auto-configuration • - Stateless(Prefix + EUI-64)、Stateful (DHCPv6)、 • Addressing Lifetime(Age for renumbering) • Real-time/multimedia support • - Integration with Label Switching/MPLS: • - DiffServ • Integrated Security Support • - IPSec(AH Header+ESP Header) • Mobility • - No Foreign Agent、Free of Triangle routing、Plug&Play (Care-of Address) … • Quality of Service • - 20-bit Flow Label enables identification of traffic flows 、Apply for real-time Voice and Video stream • service ...

  7. 三、 HiNet IPv6 位址配發 /35 /48 /64 FP TLA sub-TLA Res NLASLA Interface ID 16 64 13 35 • Netname : HINET-TW-20000208 • Netnumber : 2001:0238::/35

  8. 三、 HiNet IPv6 位址配發(cont.) 1.每一連接至HiNet之ISP型用戶，於試用期配給 prefix length /41位址空 間，該ISP可再配發給其終端試用戶(End-user) : - 8,388,608 subnets per site (/42 ~ /64) Example : 2001:0238:0000::/41 2001:0238:1800::/41 2001:0238:0700::/41 2001:0238:1F00::/41 2.每一連接至HiNet之組織型用戶(Organization or Leased-line user)，於試 用期配給 prefix length /48位址空間，該用戶可再配發給其終端試用戶 (End-user): - 65,536 subnets per site (/49 ~ /64) Example : 2001:238:0002::/48 2001:238:1802::/48

  9. 三、 HiNet IPv6 位址配發(cont.) 3.每一連接至HiNet之HiNet ADSL固接式用戶(By Configured Tunnel 設 定)，於試用期配給 prefix length /64位址空間，該用戶可運用作為其 LAN prefix使用Stateless 或 Stateful方式配發給其終端試用戶(End-user): -  1.8*1019 hosts per subnet Example : 2001:0238::/64 + EUI-64 2001:0238::A00:20FF:FEC2:4BCE /64 2001:0238:F00:5::/64 + EUI-64 2001:238:F00:5:230:F1FF:FE03:AE03

  10. 四、HiNet IPv6 Network AS 17419 TWIXv6 Peers (Native IPv6) TWIXv6 IPv6 routers HiNet IPv6 sites HiNet IPv6 Native Backbone ... IPv6 Routers International Gateway NTT(OCN) 、 6NGIX(Korea) TL 6Bone Backbone Site 6bone/6ren IPv6 peers、6TAP (6bone is tunneled/6ren is Native IPv6)

  11. 四、HiNet IPv6 Network(cont.) - HiNet IPv6國際與國內互連圖 美國 6TAP 日本 NTT 韓國 6NGIX(NAP) HiNet IPv6 6Bone 中華電信研究所 CHT-L 台灣學術網路 TANet 台灣網路資訊中心 TWNIC 國家高速電腦中心 NCHC 中央研究院 Sinica

  12. 四、HiNet IPv6 Network(cont.) TWIXv6 FE*2 ISP1 Access Ports T1~64K 台北Taipei HiNet TWIXv6 ISP2 Access Ports T1~64K 桃園慈文 Taoyuan Access Ports T1~64K 新竹建新 Hsinchu Frame Relay Access Ports T1~64K 台中市府 Taichung Access Ports T1~64K 台南新興 Tainan Access Ports T1~64K 高雄中山 Kaoshiung

  13. 四、HiNet IPv6 Network(cont.) IPv6-IPv4 Transition Mechanism : NAT-PT(RFC 2766) AS 17419 AS 3462 HiNet IPv6 sites HiNet IPv4 sites HiNet IPv4 Native Backbone HiNet IPv6 Native Backbone IPv6-IPv4 Translation Gateway Others: TCP-UDP Relay(RFC3142) 、 BIS(RFC2767)、 BIA(Korea) 、 DSTM 、SOCKS-based Gateway(RFC 3089)

  14. IPv6 四、HiNet IPv6 Network(cont.) IPv4 As a Service Provider , the “Transition Mechanism” is necessary ! Others: TCP-UDP Relay(RFC3142) 、 BIS(RFC2767)、 BIA(Korea) 、 DSTM 、SOCKS-based Gateway(RFC 3089) ….

  15. 四、HiNet IPv6 Network(cont.) 台北Taipei Network Monitoring Server -Looking-Glass : http://203.74.210.41/cgi-bin/index.cgi 2001:238:F00:5:230:F1FF:FE03:AE03 -BGP peering status (up/down) - MRTG Status Gateway Router TWIXv6 Core Router HiNet TWIXv6 Router Access Router WWW : www.ipv6.net.tw 210.65.165.52 2001:238::A00:20FF:FEC2:4BCE DNS/Mail : dns.ipv6.hinet.net 210.65.165.54 2001:238::A00:20FF:FED9:78B2 FR

  16. ISP ISP ISP 四、HiNet IPv6 Network(cont.) Proposed IPv6 IX(Internet Exchange ) by HiNet IPv6 IX Room NMS Server IPv6 Route Reflector IPv4 Internet Prefix Length /64 Native IPv6 peering Ether Switch ISP Co-locate Router DSU/CSU

  17. v6 HiNet v4 Internet TWIX v6 BGP 4+ 五、HiNet Trial Services - HiNet(Transit) 1. Configured Tunnel Mode 2. Native IPv6 Connection 3. Relay Server - TWIXv6 1. IPv6 Routing Exchange RR or Route Server(MRTd) Looking Glass BGP Peering Status MRTG Map + Looking Glass BGP Peering Status MRTG Map Configured Tunnel Mode Dual Stacks 用戶 Routers Routers 用戶 Routers Routers 用戶 Hosts 6to4 Relay Auto-Tunnel Relay Server BGP4+ Phase II 用戶 Routers Native IPv6 BGP or Static 用戶 Routers Routers Phase I

  18. 五、HiNet Trial Services(cont.) • 九十年七月一日起至九十一年六月三十日 • IPv6 Tunnel Service：試用戶須為 HiNet 固接式客戶(含專線及ADSL)，試用戶使用 IPv6 • Configured Tunnel 設定，並以 HiNet 配發之 IPv6 位址連接至本網路，試用 • 戶須另指定一個 IPv4 位址作為建立 Tunnel 之用。  • IPv6 Native Service：試用戶使用 HiNet 配發或自行申請之 IPv6 位址，並自備支援 IPv6協定 • 之路由器，租用中華電信之高速數據電路連接至本網路；本服務提供試用 • 戶建立獨立之 IPv6 連外網路 • IPv6 TWIX Service：試用戶須自行申請 IPv6 位址及AS number，並自備 TWIX 機房端與試用 • 戶端支援 IPv6 協定之路由器，以高速數據電路連接至 IPv6 TWIX 網路作訊 • 務交換。

  19. 五、HiNet Trial Services(cont.) - For Tunnel Mode End-Users • Linux 設定範例 • Win2000 設定範例 • Solaris 設定範例 • * Available from www.ipv6.hinet.netIPv6設定範例

  20. 六、問題分享 • - The Multi-homing Problem(RFC2260) • IPv4 multi-homing routing issue could not be adopted in IPv6 hierarchical • addressing design • Loosing load-share and back-up mechanism ! • The standard solution will be more helpful on the commercial • provision • - IPv6/IPv4 Interoperability • Now IPv6 network just likes a lonely island ; Server Farms locate in IPv4 • Service Providers need IPv6 Transition Mechanisms 6 -- > 4 ， 4 -- > 6: • NAT-PT(RFC2766)-Application Gateways(ALG’s) for DNS, FTP… etc.、 • BIS (RFC2767)、BIA 、DSTM(Dual Stack Transition Mechanism) • === > For SPs, the venders’ support is very important !

  21. 六、問題分享(cont.) • - Hierarchy Aggregation • Only Top Level Aggregators(Tier-1 or Tier-2 SPs) will be assigned • address blocks, the effect is downsizing the Routing Table; • How about the small-to-mid size ISPs or enterprises which need to run their own • network policy. Some kind of trade-off ? • - The IPv6 Address Allocation • Prefix Length “/35 ~ /X” for LAN port subnet and WAN port ? • How can we efficiently use IPv6 address space but don't limit the interconnectivity • of users ? • We are trying and searching some kind of experience to delegate the feasible • IPv6 Blocks

  22. 六、問題分享(cont.) • - IPv6 Address Naming Issue • How to remember such a long 128-bit IPv6 address ? • How to support tremendous requirement of domain name mapping in DNS ? • Once IPv6 grows up, can the traditional DNS mechanism and solution support the • huge naming database without influencing the look-up performance ? Even think • about the dynamic DNS issue ! • “Good DNS” will help users feel more easy to close IPv6 Network • - Killer Application of IPv6 • Wireless(Mobile IP, 3G … etc. ) • Services of Broadband xDSL, FTTx(fiber to the home、Fiber to the Building … etc.) • which will exhaust large IP blocks

  23. 七、結論 • The Future Trial Works of IPv6 in HiNet • - Cooperate with NICI IPv6 backbone team • - Connect to IPv6 IX(Internet Exchange) • - Multicast • - VoIPv6 • - Home Network • - IPSec • - QoS-DiffServ • - IPv6 for Wireless LAN • - MPLS over IPv6 • - Mobile IP-IPv6 over 3G Cellular

  24. Thank you ! 聯絡資料 : HiNet IPv6工作小組 : v6noc@hinet.net HiNet IPv6 專線電話 : 0800-080-700

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