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CHT IPv6 Measurement and
Deployment
Chia-Wei TsengChunghwa Telecom
2015.09.09
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Agenda Chunghwa Telecom Profile IPv6 Measurements in Taiwan IPv6 Deployment Status of Chunghwa Telecom Chunghwa Telecom IPv6 Deployment experience Summary
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Chunghwa Telecom Profile
Subscribers in Major Services
Broadband Service(FTTx/xDSL)
4,509,516
Mobile Service(2G/3G/4G)
11,189,288
An Integrated Telecom Operator Employees: 23,287 (Aug. 2015)
Capital : NT$ 77,574,465,450
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Agenda Chunghwa Telecom Profile IPv6 Measurements in Taiwan IPv6 Deployment Status of Chunghwa Telecom Chunghwa Telecom IPv6 Deployment experience Summary
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IPv6 Measurements in Taiwan
ISO-3166 Code
Internet Users
IPv6 Use ratio IPv6 Users(Est) Population Country
TW 18706330 0.498% 93228 23382913 Taiwan
Index IPv6 Users(Est) Country1 72062824 United States of America2 15805239 Germany3 11741449 Japan
Index IPv6 Use ratio Country1 42.51% Belgium2 25.85% Switzerland3 19.92% United States of America
Top 3 in the world
Taiwan IPv6 Ranking IPv6 User ratio: 45th IPv6 User(Est): 35th
Source:Google IPv6 Adoption Source:AKAMAI
Source:APNIC
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IPv6 Measurements in Taiwan
Source:APNIC
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Agenda Chunghwa Telecom Profile IPv6 Measurements in Taiwan IPv6 Deployment Status of Chunghwa Telecom Chunghwa Telecom IPv6 Deployment experience Summary
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2007 2009 2010 2011 2012 2013 2014 2017
HiNet IDC Center Support IPv6
HiNet Launched IPv6 Tunnel Broker Trial
Service
HiNet Obtained“IPv6 Enabled SP
Logo”
CHT participated in World IPv6 Day
CHTTL IPv6 Testing Lab participated the government’s “Next Generation Internet Interoperability Certification Program”
(2009-2012)
HiNet Launched FTTx/Dual Stack IPv6
Trial Service
CHT supportgovernment IPv6 GSN
network Project
CHT Participated in World IPv6
Launch
CHT IPv6 Major Milestones
PWLAN and LTE IPv6 trial run
HiNet online E-service provide
IPv6 application
HiNet Launched FTTx/Dual Stack IPv6
Service
CHT released the IPv6 White Paper
HiNet, ISP of CHT (Chunghwa Telecom, NYSE:CHT)
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CHT IPv6 deployment status Network status
Backbone and access network is IPv6 capable
International Networking HiNet has established IPv6 networking with the world's leading ISP and ICP
operators, including AT & T,Verizon, Sprint, TeliaSonera, HE, NTT, FT,KDDI, PCCW, SingTel, StarHub, Google, Facebook…,etc.
Domestic and TWIX interconnection HiNet has provided IPv6 traffic exchange (TWIXv6) for other Taiwan
ISP operators, including GSN, TANET, TWAREN, TWGATE…,etc.
CHT IPv6 Exchange
Description numbers
International Networking Numbers of interconnection with international ISPs
42
Domestic Networking(including TANET and ISP)
Numbers of interconnection with Domesticl ISPs
5
TWIX interconnectionNumbers of interconnection with Domesticl
ISPs(TWIX)9
10
2008~ Future2004~20072001~2004Dedicated Frame-Relay IPv6
NetworkDedicated GE IPv6 Network Commercial Dual Stack Network
All POPs support IPv6 dual stack service
HiNet Dual Stack Network
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HiNet IPv6 exchange status
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HiNet Backbone(Dual Stack)
InternetISP 1 ISP N
Domestic Peering(Dual Stack)
International Peering
(Dual Stack)
Access Network(Dual Stack)
HiChannel videoHiNet Mail HiNet e-AdvertisementHiNet e-Mall
Dual Stack Services
HiNet IPv6 Deployment
IDC Data Center(Dual Stack)
TWIX(Dual Stack)
HiNet is the first ISP to obtain IPv6 Enabled Logo in Taiwan
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IPv6 services in CHT HiNet IPv6 Native Access Service
For leased line users. Users must prepare a router and connected to HiNet IPv6 with leased line.
IPv6 Configured Tunnel Service For HiNet IPv4 users with fixed IP address.
Users can set up a configured tunnel with HiNet tunnel server.
Tunnel Broker Service For all HiNet IPv4 users. Users need to install
TB client software to set up dynamic tunnel with HiNet tunnel broker.
FTTx IPv6/IPv4 Dual Stack Service For HiNet FTTx users. There are two different types.
Fixed types: The OS of CPE must support SLAAC(RFC4862).Non-fixed types: The OS of CPE must support IPv6 PPPoE.
HiNet is currently in pre-commerical Fiber to the Home(FTTx) IPv4/IPv6 services stage
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IPv6 services in CHT HiNet HiNet DNS and domain name hosting service are
IPv6 ready HiNet Mail, HiNet Internet advertising, HiNet digital
mall and other services are supported IPv6 All of HiNet IDC POP is dual stack now Online e-service for IPv6 application is available
http://ipv6.taco.hinet.netIt’s free service for IPv6 users.
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IPv6 Testing Service in CHT-TL CHT-TL (Chunghwa Telecom Laboratories, the R&D lab
under Chunghwa Telecom) Established in 2003, the IPv6 Ready Logo Accredited Lab in Taiwan Test Capabilities Include:IPv6
Core、 IPSec、 DHCPv6、 SNMPv2C and CE Router
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Agenda Chunghwa Telecom Profile IPv6 Measurements in Taiwan IPv6 Deployment Status of Chunghwa Telecom Chunghwa Telecom IPv6 Deployment experience Summary
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IPv6 interconnection with ICP is not equal to IPv4
ex: Taiwan YAHOO
YAHOO TWHiNet
Dual Stack User (IPv6 first)
Server
IPv4 (shorter path)
IPv6(longer path)
Transit Provider
Dual Stack Web server
Domestic interconnection(IPv4 Only)
Foreign Interconnection(支援 IPv6)
Case1 :QoE-IPv6 routing problem
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Case1 :QoE-IPv6 routing problem
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Case2 :QoE-ICP DNS problem
Client prefers IPv6 over IPv4. Twice the load on the DNS CAPEX is added
IPv4 Only IPv4/IPv6 dualstack
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Case3:QoE-IPv6 Partially-deployed environment
IPv6/IPv4 fallback problem Problem is especially significant in TCP-based applications
使用者 test.ipv6.tw
1. IPv6 first
DNS ServerIPv6 add resolution
test.ipv6.twA IPv4 =1.1.1.1AAAA IPv6 = 2001::1
2. Try IPv4
Est 20 secs Network or Server problem
User: IPv4/IPv6DNS : IPv4/IPv6Network : Not IPv6 readyServer : Not IPv6 ready
IPv4/IPv6
DNS provide server’s IPv6 address Client is IPv4/IPv6 dualstack
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Case4: CPE IPv6 issues Not all CPE Support IPv6 MTU Size issue
Carrier IPv4 and IPv6
NetworkLayer 2 Access
VLANIPv4 and / or IPv6 devices
BNTBridged-Mode IPv4/IPv6 Edge Router
(B-RAS)
WAN port MTU=1492(PPPoE)LAN port default MTU=1500
CPE
Server1500 Bytes Packets
Packet Too Big (PTB)
RA(MTU should be1492)
Issue 1End user CPE does not support IPv6 over PPPoE
Issue 2The IPv6 MTU advertised on Ethernet interfaces
should be 1492 bytes in PPPoE environments
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Agenda Chunghwa Telecom Profile IPv6 Readiness in Taiwan IPv6 Deployment Status of Chunghwa Telecom Chunghwa Telecom IPv6 Deployment experience Summary
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Summary IPv6 has minor flaws, which are enough to give bad impressions to
users IPv6 routing path, ICP DNS problem, fallback problem and CPE IPv6
support..,etc. ISP/ICP should ensure that new equipment and software they
purchase is IPv6 ready The transition from IPv4 to IPv6 will be a significant network
changeover and a milestone in the history of the internet CHT Provided the FTTx based IPv6/IPv4 dual stack trial services
since 2011 Becoming IPv6-ready is a key part of CHT plans for wider 4G LTE
and PWLAN network deployments
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