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IPv6 Trial in CHT & Policy Issues

IPv6 Trial in CHT & Policy Issues. Fu-Kuei Chung fkchung@cht.com.tw Chunghwa Telecom Co. TWNIC IPv6 Working Group Jul. 2001. Contents. Overview 6Bone Trial HiNet IPv6 Trial Lessons from the IPv6 Trial Future Trial Works Summary. Overview.

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IPv6 Trial in CHT & Policy Issues

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  1. IPv6 Trial in CHT & Policy Issues Fu-Kuei Chung fkchung@cht.com.tw Chunghwa Telecom Co. TWNIC IPv6 Working Group Jul. 2001

  2. Contents • Overview • 6Bone Trial • HiNet IPv6 Trial • Lessons from the IPv6 Trial • Future Trial Works • Summary

  3. Overview • Chunghwa Telecom run the largest ISP (HiNet) in Taiwan • Leased-Line : > 6,500 (2001/07) • Dial-up : > 2,000,000 • ADSL : > 420,000 • ADSL grow very fast • End of 2001 : 1,000,000 • End of 2002 : 2,000,000 • ADSL broadband service consume a great amount of IP • Time for the future provision of IPv6

  4. 6-Bone Trial (1/6) • CHT-TL start as a leaf site in 1997/12 & a transit site in 1998/11 • Become a backbone site since 1999/02 • Register as CHTTL-TW • Get 3FFE:3600::/24 address prefix • Have built BGP4+ tunnel with some other backbone sites: Sprint, Viagenie, Cisco, Digital-CA and Telebit, etc. • Provide stable transit service to other sites • 3ffe:3600:1::/48 for NDHU • 3ffe:3600:2::/48 for CCITT • 3ffe:3600:3::/48 for NCKU … etc.

  5. 6-Bone Trial (2/6) • Techniques and Protocols Trial • IPv6-over-IPv4 tunneling testing • Stateless auto-configuration testing • RIPng and BGP4+ testing • Set up Related Services • DNS server supporting AAAA records • WWW server • FTP server • Telnet

  6. 6Bone Trial (3/6) -- Testing Platform NTHU IPv6-over-IPv4 tunnels CCIT NCKU TANET IPv6 router NCU NTU HiNet INQMS server Telebit Sprint NUS-IRDU(SG) Cisco IPv4 Internet ETRI(KR) Digital-CA Viagenie NTT-ECL(JP)

  7. 6Bone Trial (4/6) -- Int. Tunnels Telebit(Denmark) 3ffe:0100::/24 Viagenie(Canada) 3ffe:0b00::/24 IIJ (JP) 3ffe:8020::/28 ETRI (KR ) 3ffe:2e00::/24 2001:230::/35 Sprint(USA) 3ffe:2900::/24 Cisco(USA) 3ffe:0c00::/24 NTT-ECL (JP) 3ffe:1800::/24 2001:218::/35 Digital-CA(USA) 3ffe:1200::/24 NUS-IRDU(SG) 3ffe:1600::/24 CHTTL-TW 3ffe:3600::/24 2001:238::/35 NTU NCU-1 NCU-2 CCIT NDHU CCU NCKU-1 NCKU-2

  8. 6Bone trial (5/6) -- IP Allocation 128 001 TLA RES NLA SLA Interface ID 001 0x1ffe NLA1 NLA2 SLA Interface ID 13 8 24 16 64 3FFE:3600::/24 CHT-TL 3FFE:3600:0000::/40 for tunneling and universities 3FFE:3600:0100::/40 for CHT business groups and subordinates

  9. 6Bone Trial (6/6) -- IP Allocation 128 001 TLA RES NLA SLA Interface ID 001 0x1ffe NLA1 NLA2 SLA Interface ID 13 8 24 16 64 3FFE:3600:0000::/48 reserved 3FFE:3600:0001::/48 for NDHU 東華大學 3FFE:3600:0002::/48 for CCIT 中正理工學院 3FFE:3600:0003::/48 for NCKU 成功大學 3FFE:3600:0004::/48 for NCU-CSIE中央大學 3FFE:3600:0005::/48 for NCU-CC 中央大學 3FFE:3600:0006::/48 for NTU 臺灣大學 3FFE:3600:0007::/48 for NCCU中正大學 3FFE:3600::/24 CHT-TL

  10. Purpose of HiNet IPv6 Trial • Get Experience of IPv6 Deployment • Transition Mechanism • Addressing Issues • Network Management • Training • Feedback from End Users

  11. HiNet IPv6 Trial Overview • IP Address Block : 2001:238::/35 • Domestic IPv6 Network : 6 POPs • Backbone : Frame Relay • Routers : Cisco 3600、4500 Series • Servers : • Mail : SUN Solaris 2.8 ， Sendmail 8.11.2 • DNS : SUN Solaris 2.8 ， Bind 9.0.1 • WWW : SUN Solaris 2.8 ， Apache 1.3.14 • Routing Server : Linux，MRTd • 6to4 Relay Server : Win2000 • International IPv6 Connectivity : 6Bone (planning : 6TAP, ...etc.)

  12. IPv6 Network Deployment (1/2) TWIXv6 FE T1~64Kbps ISP1 Taipei(S2) HiNet TWIXv6 ISP2 T1~64K Taoyuan T1~64K Hsinchu Frame Relay T1~64K Taichung T1~64K Tainan T1~64K Kaoshiung

  13. v4 Internet v6 HiNet IPv6 Network Deployment (2/2) • Provision Service Types • Tunnel Mode-Dual Stack • Native IPv6 Connection Looking Glass BGP Peering Status MRTG Map Tunnel Mode Dual Stacks USer Routers Routers 6to4 Relay Auto-Tunnel User Hosts Relay Server IBGP Native IPv6 BGP or Static User Routers Routers

  14. IPv6 Address Allocation • IPv6 Address Block:2001:238::/35 • NLA1 ---/37, NLA2 ---/41 • For main PoPs (Regional Center), allocate prefix “/37” • 2001:238:0000::/37, 2001:238:0800::/37 -->Taipei (Northern) • 2001:238:1000::/37 --> Taichung (Central) • 2001:238:1800::/37 --> Kaohsiung (Southern) • For other PoPs, allocate prefix “/41” • 2001:0238:0000::/41 --> Taoyung • 2001:0238:1800::/41 --> • For leased-line end users, assign prefix “/48” • 2001:238:0002::/48 --> User-1 …………………………... • 2001:238:1802::/48 --> User-n

  15. v6 HiNet TWIX v6 Native IPv6 BGP IPv6 Internet Exchange (1/2) RR or Route Server(MRTd) Looking Glass BGP Peering Status MRTG Map + Looking Glass BGP Peering Status MRTG Map User Routers Routers IBGP Phase II User Routers Phase I

  16. ISP ISP ISP IPv6 Internet Exchange (2/2) IPv6 IX Room NMS Server IPv6 Route Reflector IPv4 Internet Native IPv6 peering Ether Switch ISP Co-locate Router DSU/CSU

  17. Lessons from the IPv6 Trial (1/2) • Hierarchy Aggregation • Top level aggregation, different from IPv4 situation • Impact to small and medium ISPs • Multi-homing • IPv4 multi-home routing approach could not be adopted • How to resolve load-sharing and back-up issues • Transition Mechanisms • Lots of defined mechanisms • Which are easily provided by an ISP? • Which mechanisms provide best performance for the customer?

  18. Lessons from the IPv6 Trial (2/2) • IPv6 Address Assignment • How to efficiently use IPv6 address space? • IPv6 Address Naming Issues • How to support huge naming database? • How to maintain look-up performance? • Access • Not much available: dial-up, xDSL … • DHCP needed • Applications • Need more new applications, IPv4 and IPv6 aware

  19. Future Trial Works • Connect to IPv6 IX(Internet Exchange) • IPSec • Multicast • QoS-DiffServe • VoIPv6 • IPv6 for Wireless LAN • Mobile IPv6 - IPv6 over 3G Cellular …..

  20. Summary • IPv6 technology has stepped from testing stage to initial commercial deployment • Most IPv6 activities in Taiwan are still focused on research and experiment efforts • TWNIC is promoting commercial IPv6 service via integration efforts of ISPs and related industries • Chunghwa Telecom is actively proceeding IPv6 Trial. We expect to get more experience before ready for commercial services

  21. Thank you for the attention

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