Presentation by Chia-Wei Tseng at APNIC 44 on Wednesday, 13 September 2017

1. 1
Chia-Wei Tseng
Chunghwa Telecom
2017.09.13

2. 2/15
 Chunghwa Telecom Profile
 IPv6 Measurements in Taiwan
 IPv6 Progress and Challenges of Chunghwa Telecom
 Summary

3. 3/15
Subscribers in Major Services
Broadband Service(FTTx/xDSL) 4,470,051
Mobile Service(3G/4G) 10,629,491
 Employees: 22,252 (August. 2017)
 Capital : NT$ 77,574,465,450
Mobile Subscriber Market ShareBroadband Subscriber Market Share
Chunghwa Telecom

4. 4/15
ISO-3166
Code
Population
Enabled
Network
IPv6 Use ratio
Taiwan IPv6
Ranking
Country
TW 23,405,308 37.88% 0.51% 63 th Taiwan
Source:Google IPv6 Adoption
Source:AKAMAI
Source: World IPv6 Launch

5. 5/15
2008 2010 2011 2012 2013 2014 2017 2018
HiNet IDC Center
Support IPv6
HiNet Obtainedd
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 supports
government IPv6 GSN
network Project
CHT Participated
in World IPv6
Launch
PWLAN and LTE
IPv6 trial run
HiNet online E-
service provide
IPv6 application
CHT released the
IPv6 White Paper
HiNet, ISP of CHT (Chunghwa Telecom, NYSE:CHT)
4G LTE plans to
commercial service

6. 6/15
HiNet Backbone(Dual Stack)
Internet
ISP 1 ISP N
Domestic Peering
(Dual Stack)
International
Peering
(Dual Stack)
FTTx Network
(Dual Stack)
HiChannel video
HiNet Mail
HiNet e-
Advertisement
HiNet e-Mall
Dual Stack Services
IDC Data Center
(Dual Stack)
TWIX
(Dual Stack)
LTE Mobile Network
(Dual Stack)

7. 7/15
Network status
 Backbone and access network is IPv6 capable
International Networking
 AT&T, Verizon, Sprint, TeliaSonera, HE, NTT, FT,KDDI,
PCCW, SingTel, StarHub, Google, Facebook…,etc.
Domestic and TWIX interconnection
 GSN, TANET, TWAREN, TWGATE…,etc.

8. 8/15
 IPv6 Native Access Service
 For leased line users
 IPv6 Configured Tunnel Service
 For HiNet IPv4 users with fixed IP
address
 Tunnel Broker Service
 For all HiNet IPv4 users
 FTTx IPv6/IPv4 Dual Stack Service
 For HiNet FTTx users
• Residential and business types
 Provide 4 cities default service in Taiwan
HiNet is the first ISP to provide
IPv6/IPv4 FTTx service in Taiwan

9. 9/15
 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

10. 10/15
HiNet
Routing differs between IPv4 and IPv6
Dual Stack User
(IPv6 first)
IPv6 Path
Dual Stack or
IPv4 Web server
Improve the user experience as the transition to IPv6 continues
Server
IPv4 Path
Internet
DS Faster IPv4 Faster
Alex Top 100 Website Measurement

11. 11/15
 Not all CPE Support IPv6 (Customer-owned)
 Replacing or upgrading the HGW is a challenge, in particular for large
networks
Carrier
IPv4 and IPv6 Network
Layer 2
Access
VLANIPv4 and / or IPv6
devices IPv4/IPv6 Edge Router
(B-RAS)
CPE
Server
Issue 1
End user CPE does not support IPv6 over PPPoE
Issue 2
The Replacing or upgrading the IPv6 ready HGW
(Support WiFi, PPPoE., etc )
HGW
Home AP
 Planning early allows aligning the deployment of IPv6 with regular
refresh cycles
 Any new equipment purchased is IPv6-compatible

12. 12/15
 Forwarding IPv6 Packets with the Hop-by-Hop Extension Header
 Some antivirus firewall will block all incoming and outgoing IPv6 traffic

13. 13/15
IPv6 unsolicited traffic
S1-MME
S11
S1-U
SGi
PDN / IP
Services
NodeB/BTS
eNodeB
S-GW P-GW
S-GW
ISP
Services
IPv4
IPv6 DDos, Scan
TCP/UDP /ICMP
Evaluate the firewall security policies on the border
 LTE IPv6 does not have NAT or FW blocking external networks
 Cyber security risk

14. 14/15
 Not all Vendors provide default IPv4/IPv6 DS APN setting
 Users are not familiar with the operation, may produce customer service
problems
 New phone in 2018 initiate IPv4/IPv6 APN by default(suggestion)
 Upgrade IPv6 through OTA for old cell phone

15. 15/15
IPv6 deployment comes with its own challenges
 CPE IPv6 support, IPv6 path diversity, configuration
and security issues, etc.
Becoming IPv6-ready is a key part of CHT plans for
wider 4G LTE and PWLAN network deployment
CPE and UE are critical roles for IPv6 deployment

16. 16/15
16
Thank you!
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