Trends in ipv6
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Trends in IPv6. Bill Cerveny Joint-Techs Workshop - Batavia, IL July 17, 2007. Outline. Motivation IPv6 Past IPv6 Present/Future. Motivation. A look at what has changed since 2001 A look at the current paradigms in IPv6. Heard at a seminar a long time ago.

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Trends in ipv6

Trends in IPv6

Bill Cerveny

Joint-Techs Workshop - Batavia, IL

July 17, 2007


Outline

Outline

  • Motivation

  • IPv6 Past

  • IPv6 Present/Future


Motivation

Motivation

  • A look at what has changed since 2001

  • A look at the current paradigms in IPv6


Heard at a seminar a long time ago

Heard at a seminar a long time ago

  • Numerous vendors and organizations working on implementations

  • Wide-spread availability of IPv6 within two years

  • IPv4 address depletion sometime between 2005 and 2010


Heard at a seminar a long time ago1

Heard at a seminar a long time ago

“Ipng: The Next Generation Internet Protocol,” Steve Deering, 1996

  • Numerous vendors and organizations working on implementations

  • Wide-spread availability of IPv6 within two years

  • IPv4 address depletion sometime between 2005 and 2010


Internet2 ipv6 workshop 1

Internet2 IPv6 Workshop #1

  • Lincoln, Nebraska, May 2001

  • Experimentation with DNS A6

  • Microsoft introduced IPv6 “Technology Preview” for Windows 2000

  • Cisco unrolled native IPv6 support in IOS 12.2.2T

  • KAME and USAGI stacks enabled IPv6 in BSD and Linux


Ipv6 geographic provider independent addressing

IPv6 Geographic Provider-Independent Addressing

  • Based on two (now expired) IETF Internet-Drafts by Tony Hain

  • IPv6 address based on longitude/latitude

  • Hain proposed to Internet2 community in January 2003

  • Internet2 IPv6 Working Group created presentation and lab based on Hain’s I-D

  • Novel idea, many challenges


Combined ipv4 ipv6 routing table size

Combined IPv4/IPv6 Routing Table Size

  • Assumes

    • IPv4 is not going away anytime soon

    • IPv6 aggregation is not happening

  • Combined routing table could outpace Moore’s Law

  • A major topic of concern within the IETF

    • Routing Research Group


Unique local addressing ula rfc 4193

Unique Local Addressing (ULA)RFC 4193

  • Replaces Site-local addressing

  • Future unclear; controversial


Stateless address autoconfiguration

Stateless Address Autoconfiguration

  • Practically every IPv6 implementation today supports stateless address autoconfiguration

  • Concerns about security, particularly auditing, among network admins


Dhcpv6

DHCPv6

  • Has been a long time coming

  • Windows Vista supports DHCPv6

  • ISC DHCPv6 in alpha (4.0.0a1)

  • dibbler

  • Large scale implementations looking at DHCPv6


Dhcpv6 and stateless address autoconfiguration

DHCPv6 and Stateless Address Autoconfiguration

  • Can coexist. Three models:

    • Stateless Address Autoconfiguration only

    • Stateless Address Autoconfiguration with DHCPv6

    • DHCPv6 only

  • Should a mixed Stateless Address Autoconfiguration / DHCPv6 environment be the norm for technical conferences?


Tunneling technologies

Tunneling Technologies

  • Most tunneling technologies perceived as security threats

  • A chicken-and-egg problem: Tunneling may be insecure, but it is one of the easiest ways of fostering IPv6 connectivity among early adopters


Tunneling technologies 2

Tunneling Technologies (2)

  • 6to4

  • ISATAP

  • Teredo


Multi homing

Multi-homing

  • Shim6

  • Still a work in progress


Flow label

Flow Label

  • A QoSish feature perceived as a feature looking for a future application

  • Still looking for an application


Tools

Tools

  • Juniper Netflow v9 support coming soon

  • Flowd - Support for both IPv4 and IPv6 Netflow

  • MRTG supports IPv6


Acknowledgements

Acknowledgements

  • Bruce Curtis, North Dakota State University

  • John Brzozowski, Mid-Atlantic IPv6 Task Force

  • Sean Siler, Microsoft


References

References

  • Internet2 IPv6 Working Group

    • http://ipv6.internet2.edu

  • IPv6 Routing / Routing Research Group

    • http://www3.ietf.org/proceedings/06nov/slides/v6ops-13.pdf

    • http://www3.tools.ietf.org/group/irtf/trac/wiki/RoutingResearchGroup

  • ISC DHCPv6

    • http://www.isc.org/index.pl?/sw/dhcp/dhcp4_0.php

    • http://internecine.eu/software/dibbler_dhcpv6.html

  • Tools

    • http://www.mindrot.org/projects/flowd/

    • http://www.ipflow.utc.fr/index.php/Main_Page

    • http://oss.oetiker.ch/mrtg/doc/mrtg-ipv6.en.html


Thanks

Thanks!

  • [email protected]


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