NTT Communications provides an overview of their IPv6 services and deployment: - They launched a pre-commercial IPv6 service in 2003 with limited dual-stack routers and tunnels across their backbone. This allowed them to gain experience and prepare for commercial launch. - Their commercial IPv6 service launched in late 2003 included native IPv6, manual tunnels, and dual-stack options. Since then they have added features but still have gaps in statistics monitoring and firewall/load balancing support for IPv6. - Their dual-stack backbone has performed well but full IPv6 adoption remains limited due to issues with routing policies, multi-homing, and lack of demand from customers who are primarily early adopters. The drivers for full

1. NTT Communications IPv6 Overview:
Deployment & Commercial Applications
Doug Junkins
Chief Technology Officer
NTT America
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2. NTT America IPv6 Customer Profile
IPv6 Customer Breakdown
Education & Government 6%
Hardware & Manufacturing 19%
Internet & Telecom 64%
Webhosting & Web Services 11%
Total 100%
 Approximately 20% of our customer  Approximately 40% of our peering
ports are IPv6 enabled ports are IPv6 enabled
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3. NTT’s Pre-commercial IPv6 Service in the US
 In June of 2003, NTT Communications launched pre-commercial
IPv6 service in the US
 Native IPv6 was available in three locations
 Bay Area
 Los Angeles
 Washington D.C. Area
 Cisco 7206 routers in these three locations running dual stack -
tunneling across the backbone (backbone not dual stack)
 Tunneling (RFC 2893 manually configured IPv6 over IPv4)
available in all other POPs (tunnel built to one of the locations above)
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4. Pre-commercial Service Objectives
 Pre-commercial service was offered from June 2003 to
December 2003
(at which time commercial service was launched)
 Pre-commercial objectives
 Bring on a small, manageable number of customers
 Test provisioning and support procedures
 Train NOC staff
 Finalize JunOS/IOS IPv6 testing
 Develop internal tools
 Allowed time to upgrade backbone to dual stack
 Still just a few dual stack routers with tunneling across the
backbone everywhere else
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5. NTT’s Commercial IPv6 Service Launch
 In 4Q2003 global backbone was  AS2914 core completely dual stack
upgraded to dual stack (globally)
(Asia, Australia, North America, and Europe)
 7x24 NOC support and SLAs
 In December, 2003, three types of
IPv6 service were offered on a  Still service functionality gaps
commercial basis
 Native IPv6 (available at every POP)
 Manually configured IPv6 over
IPv4 tunneling
 Dual stack IPv4/IPv6
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6. IPv6 Follow Up Releases
 Since the commercial launch in December 2003, follow up releases have
been pushed out to fill functionality gaps
 Added IPv6 support for
 Off-net Tunneling
 Managed Router Service
 Shadow support for TDM and Ethernet
 Managed Firewall
 Dual stack Virtual Private Server
Our goal and philosophy is to offer all
features and services in IPv4 and IPv6
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7. Dual Stack IP Backbone – April 2010
Japan/US
320G
US/Europe
60G
Japan/Europe
27G
Asia/Ociania
147G
Highest quality global Tier-1 IP backbone Global IPv6/IPv4 dual stack network
Fully redundant network backed by industry Shortest access between Europe and
leading SLA’s Asia-Pacific available via new cable route
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8. IPv6/IPv4 Dual Stack Backbone
 IPv6/IPv4 Dual Stack Backbone has shown excellent
performance with no critical problems so far
 Core routers / routing protocols have had no problems
handing IPv6 traffic (in addition to the IPv4 traffic/routing)
 But still, we have some operational gaps
 Stats tools are still lacking in the IPv6 environment (IPv6 MIB
support, SNMP over IPv6 support…)
 IPv6 jitter measurement system compatible with our IPv4
system
 Limited netflow v9 collector support
 Firewall and Load-Balancer support is immature for Data
Center applications
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9. Current Issues
 Routing technology is “IPv4 with more address space”
 Does not address routing architecture changes necessary to address expansion of
the Internet routing table
 IPv6 policy solution to slow routing table growth makes it difficult for customers to
multi-homed
 We need a solution to the multi-homing issues before IPv6 will be widely
adopted
 Not seeing a huge demand from our customers yet
 Current customers are mostly research oriented
 OMB “mandate” not leading to many new customers
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10. What Will Finally Drive IPv6 Deployment?
 IPv4 Address Depletion
 IPv6 is one solution to address a shortage of IPv4 address space
 This problem is more critical outside the U.S. where IPv4 address space is
historically more limited
 Current projections put IPv4 exhaustion at the IANA level at September 2011
 New Applications
 Next generation network applications will require ubiquitous network access from a
wide range of devices
 IPv6 provides address space to uniquely identify these new devices and better end-
to-end security to ease the deployment of these new services
 We see new network applications as the most likely driver of IPv6 deployment
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11. Questions – junkins@ntt.net
http://v6atwork.com
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