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IPv6 Deployment. North American Global IPv6 Summit June 24-27 2003 Jim Bound Chair IPv6 Forum Technical Directorate / Chair North American IPv6 Task Force Hewlett Packard Fellow Chris Mitchell

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ipv6 deployment

IPv6 Deployment

North American Global IPv6 SummitJune 24-27 2003

Jim Bound

Chair IPv6 Forum Technical Directorate / Chair North American IPv6 Task Force

Hewlett Packard Fellow

Chris Mitchell

North American IPv6 Task Force Advisory Council / Microsoft Corporation - Lead Program Manager: Windows Networking and Communications

  • Review common perceptions of IPv6
  • Justification for IPv6
  • Current IPv6 realities
  • Review deployment options available
  • Discuss current deployment solutions

June 2003 Page 2

perceptions of ipv6
Perceptions of IPv6
  • Common perceptions:
    • Security concepts are often viewed as vastly different from current practices
    • Often described and viewed as a complete replacement of the current Internet
    • Reasons for IPv6 have been eliminated by the development of Network Address Translation (NAT)
  • Implications:
    • Benefits of IPv6 often overlooked or questioned
    • Companies often have “Wait and see attitude”
    • Requires a business justification

June 2003 Page 3

  • There are a number of stated justifications
    • Security from avoidance of NAT
    • Routing
    • Stateless Address Configuration
    • Others……….
  • For End Users and IT Professionals justification comes from new experiences or capabilities
  • Example:
    • Review from today’s Keynote:
      • Pervasive Collaborative Computing experiences
        • Real-Time Communications (RTC)
        • Collaboration
        • Shared experiences
    • These experiences are better with peer to peer communication
    • Networks are more efficient using distributed models
      • Software updates can be retrieved from closest peer or server rather than from central location
  • Is IPv6 necessary?

June 2003 Page 4

current challenges
Current challenges
  • The development and deployment of new experiences is difficult:
      • NATs deployed within networks (Enterprises, Branch offices, WiFi Hotspots, etc.)
      • Networks have a mix of private and public IP addresses
      • Firewalls prevent end to end connectivity
    • IT/Network administrators have to engineer point solutions to enable communication between applications and/or computers
    • Developers need to be network experts in order to develop successful applications
  • Mobility is increasing but not supported in the network
    • Users frustrated with broken experiences

June 2003 Page 5

ipv6 meets the challenges
IPv6 meets the challenges
  • Enables next generation network-based applications without additional expense or expertise
  • Enables deployment of these applications without major investment in new network infrastructure
  • IPv6 addresses many of the challenges with today’s networks:
    • Global addressing (IPv6 has 1038 addresses)
      • Scaling well beyond IPv4 3 billion public endpoints
      • Allocations allow ISPs to provision many public addresses
      • Eliminates requirement for NATs and private addresses
      • Restores connectivity as appropriate
    • Secure
      • Anonymous addresses provide privacy across multiple sessions
      • IPSec enables host-based authentication and security at the IP layer to augment edge-based security or obscurity
    • Mobile solution
      • Mobile IPv6 solution does not require additional infrastructure or server-side routing

June 2003 Page 6

meeting the challenges today
Meeting the challenges, today!
  • Applications and solutions are shipping
    • Microsoft ThreeDegrees and Peer-to-Peer software development kit require IPv6 connectivity
    • Real-Time communication and Video streaming applications offered by Agora, Microsoft and others
  • Vendors are shipping commercial solutions:
    • Checkpoint, Nokia, Ericsson, Agora, WindRiver, Hitachi, Juniper, Cisco, NEC, Fujitsu, Yamaha, Hexago and more
    • Operating systems that support IPv6 platform solutions include AIX, HP-UX, True64, Windows XP and 2003, OpenVMS, NSK, Solaris, FreeBSD, NetBSD, Linux and more
  • Key takeaway: solutions and applications are available now
    • Independent Software Vendors and IT Professionals should take advantage of the support in core network infrastructure to build better tools and solutions for customers

NOTE: The vendor list is not exhaustive but rather a sample; most vendors have IPv6 support today; if a vendor is not listed you should ask them

June 2003 Page 7

deployment state
Deployment state
  • Currently:
    • IPv6 deployments are often equated to full native support of IPv6-only
    • Several IPv6-only or native backbones, test networks and services are in production today
    • Mainstream customers and ISPs are not moving to IPv6 native due to a lack of customer demand and application support
  • Moving forward:
    • Deployment of IPv6 will happen with customer need
    • Deployment solutions need to be flexible and range from end-user to IT professional

June 2003 Page 8

how will ipv6 deployments occur
How will IPv6 deployments occur?
  • Option 1: Transition and co-existence
    • Lower barrier to entry; network can change gradually
    • Legacy applications and services co-exist
    • Additional overhead and management are concerns
  • Option 2: Centralized deployment or Cutover
    • Simpler network, management
    • All applications must be upgraded
    • All tools, infrastructure and support systems must be upgraded or updated
  • Option 3: Hybrid
    • Begin with transition and co-existence automatically with applications
      • Transition technologies allow Developers to use IPv6 now!
    • Enable centralized deployments by getting full IPv6 support into all vendor hardware, software and tools

June 2003 Page 9

typical deployment options
Typical deployment options
  • Managed deployment
    • Enable IPv6 native or Tunnels within managed network
    • Use central automatic deployment solution like ISATAP
  • Automatic deployment
    • IPv6 installed or enabled with applications
    • Use well known services like Teredo, Tunnel Broker, or other transition mechanism

June 2003 Page 10

managed deployment
Managed deployment
  • Description:
    • Managed deployment is centralized and owned IT manager or engineer
    • Technology can require some configuration and must be manageable
  • Availability:
    • Lot of options available to IT managers:
      • Dual stack (i.e. native IPv6 and IPv4)
      • 6to4 Tunneling
      • ISATAP Tunneling
      • Native IPv6 with DSTM or NAT-PT
    • Network Equipment providers also support these technologies, for example:
      • Cisco, Hitachi, Juniper, 6WIND, and NEC

June 2003 Page 11

automatic deployment
Automatic deployment
  • Description:
    • Enable applications to depend on connectivity
    • Requires simple, zero configuration experience for end users
    • Must work in a variety of network topologies
    • May not work for all scenarios
  • Availability:
    • A few solutions available:
      • Teredo Tunneling
      • Host-based 6to4 Tunneling
      • Tunnel Broker
    • Example, Microsoft is shipping 6to4, ISATAP and Teredo in operating systems and with applications
      • All are made available to applications written (WinSock, DPlay, .NET Framework and RPC) to use IPv6

June 2003 Page 12

solutions dual stack
Solutions: Dual stack
  • All major router vendors support native dual stack:
    • Cisco = IOS 12.0S;12.2T/S;12.3M depending on hardware series; see www.cisco.com for specifics
      • To enable IPv6:


configure terminal

interface type number

ipv6 enable


ipv6 unicast-routing

    • Hitachi = GR2000; see www.internetworking.hitachi.com for specifics
      • To enable IPv6:

Configure the port, example:

line e1 ethernet 0/0

IP e1 3ffe:501:811:ff01::/64

RA interface e1

    • Juniper = All M-series platforms; see www.juniper.net for specifics
      • To enable IPv6:

Configure an IPv6 address into “Inet6” configuration

Configure router discovery under “protocols”

    • NEC = BlueFire routers and switches; see www.cng.nec.com for specifics
      • To enable IPv6:

(config)#interface vlan 1

(conf-vlan-1)#ipv6 enable

(conf-vlan-1)#interface vlan 2

(conf-vlan-2)#ipv6 enable


(config)#ipv6 unicast-routing

    • 6WIND = 6WINDgate, edge, and NMS see www.6wind.com for specifics

June 2003 Page 13

solutions tunneling
Solutions: Tunneling
  • 6to4 Tunneling
    • Several router vendors support 6to4: Cisco, Hitachi, NEC, 6WIND
  • ISATAP Tunneling
    • ISATAP can be enabled on:
      • Cisco IOS 12.2(15)T
        • Enabled using configure command line interface
      • Microsoft Windows Server 2003 (www.microsoft.com/ipv6)
        • See ISATAP section in your IPv6/IPv4 Coexistence and Migration whitepaper included in your gift bag
      • Linux ISATAP (http://v6web.litech.org/isatap/)
        • Kernel 2.4.x with ISATAP (USAGI)
        • Modified IPRoute package (USAGI)
        • Radvd with ISATAP support (router only)
  • Teredo Tunneling
    • Teredo tunneling is a Internet draft:
      • Available on Windows XP SP1 with Advanced Networking pack
      • Enables IPv6 connectivity from behind existing IPv4 NAT devices
      • See http://www.ietf.org/internet-drafts/draft-huitema-v6ops-teredo-00.txtfor more information

June 2003 Page 14

solutions native ipv6 to ipv4
Solutions: Native IPv6 to IPv4
  • When native IPv6 becomes ubiquitous (or aggressive plan for Native IPv6) within a network there are a few options available to continue accessing “Legacy” networks without supporting Dual-Stack
  • DSTM:
    • Dual Stack Transition Mechanism (DSTM) allows IPv6 hosts within a network to access IPv4 Hosts by obtaining IPv4 addresses (using DHCPv6) within a dominant IPv6 native network, to avoid the use of IPv4 infrastructure or NAT, to communicate with IPv4 Hosts.
    • Supported on FreeBSD 3.4 and 4.x (KAME) and Linux
    • www.ipv6.rennes.enst-bretagne.fr/dstm/
  • NAT-PT:
    • NAT-Protocol Translation (NAT-PT) allows IPv6 hosts within a network using NAT-PT to access IPv4 devices via the NAT-PT enabled device
    • Supported on Cisco IOS 12.2T; NEC BlueFire
    • http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide_chapter09186a00801179e2.html

June 2003 Page 15

training references and resources
Training, references and resources
  • Training:
    • Cisco: Online Training materials available
    • Juniper: Class for configuring IPv6 in JUNOS
    • Tonex: IPv6 Fundamentals (onsite training)
    • Sunny Connection: IPv6 overview and Market Analysis
    • Microsoft: Updated Academic Learning Series TCP Title to contain IPv6 fundamentals releasing November 2003
    • Native6Group IPv6 Training Courses
  • Publications and references:
    • IPv6 Essentials written by Silvia Hagen published by O'Reilly & Associates (ISBN 0-5960-0125-8)
    • Understanding IPv6 written by Joseph Davies published by Microsoft Press (ISBN 0-7356-1245-5)
  • Development resources:
    • Microsoft:
      • MSDN: .Net Framework and WinSock reference guides
      • P2P SDK (overview tomorrow afternoon by Todd Manion)
    • Linux:
      • Several resources available
    • FreeBSD:
      • FreeBSD.org and others have v6 source and information
  • IPv6 Forum and NAv6TF
      • www.ipv6forum.com and www.nav6tf.org
  • Contact your vendors

June 2003 Page 16

  • IPv6 Deployment will happen with applications and use of applications

Transition and co-existence technologies are available and can be usedby application developers to restore connectivity

  • Managed deployments can begin now with existing infrastructure in most situations

June 2003 Page 17