1 / 22

Dibbler – a portable Dynamic Host Configuration for IPv6 implementation

Tomasz Mrugalski Gdansk University of Technology, Poland. Dibbler – a portable Dynamic Host Configuration for IPv6 implementation. June 200 5. Agenda. IPv6 autoconfiguration: stateless vs stateful DHCPv6 standarization process Implement ations Dibbler Design goals Features

tracy
Download Presentation

Dibbler – a portable Dynamic Host Configuration for IPv6 implementation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tomasz Mrugalski Gdansk University of Technology, Poland Dibbler – a portable Dynamic Host Configuration for IPv6 implementation June 2005

  2. Agenda • IPv6 autoconfiguration: stateless vs stateful • DHCPv6 standarization process • Implementations • Dibbler • Design goals • Features • Areas of development • Q&A 2

  3. IPv6 autoconfiguration (1) • Stateless autoconfiguration • Link-local addresses • Global addresses (Router Advertisements) • Lack of per host customisation • Does not support any additional parameters • Not sufficient for end users (DNS) 3

  4. IPv6 autoconfiguration (2) • Statefull autoconfiguration (DHCPv6) • Additional parameters configuration (e.g. DNS) • Global address assignment • Provides network status for administrators 4

  5. Standarization process (1) • Long standarization process • Largest number of draft revisions (28) in IETF history • Already finished: • RFC3315: DHCPv6 (June 2003) • RFC3319: SIP-related parameters (July 2003) • RFC3633: Prefix delegation parameters (Dec. 2003) • RFC3646: DNS-related parameters (Dec. 2003) • RFC3736: Stateless DHCPv6 (April 2004) • RFC3898: NIS-related parameters (Oct. 2004) • RFC4075: NTP-related parameters (May 2005) • RFC4076: Renumbering in stateless DHCPv6 (May 2005) 5

  6. Standarization process (2) • Work in progress: • Information refreshing (draft 3) • FQDN/DNS Updates (draft 2) • Service oriented address assignment (draft 1) • … 6

  7. Implementations • Linux: Sourceforge • Windows: none • BSD: Kame • Cisco: Prefix Delegation/Relays only • HP-UX: proprietary • NEC: proprietary 7

  8. Implementations • Linux: Sourceforge • Windows: none • BSD: Kame • Cisco: Prefix Delegation/Relays only • HP-UX: proprietary • NEC: proprietary Dibbler 8

  9. Dibbler :: Design assumptions (1) • Extensive server configuration • Preferences, multiple classes on one interface, address-client reservation, white-list, black-list, numerous optionsetc. • Zero client konfiguration • out-of-the-box (quick install) • Non-mandatory client configuration • For experienced/more demanding users • Portability • 2 layers: logic (C++), low-level functions (C) • Currently: Windows XP/2003, Linux 2.4/2.6 • Porting to other systems requires reimplementation of small number of low level functions 9

  10. Dibbler :: Design assumptions (2) • Clean architecture • Object-oriented • Easily extended • Extensibility • Additonal options • Data is dumped in XML (scripts,stats) • Open source • Free (as in freedom, not as in beer) • Sources available • GNU GPL licence 10

  11. Dibbler :: Features (1) client server • Server discovery • Address/addresses grant • Address renewal • Duplicate Address Detection (DAD) • Rapid-commit • Unicast communication • Options renewal 11

  12. Dibbler :: Features (2) server 1 client server 2 • Multiple server support • Redundancy • Client chooses best server • Retrieving options from multiple servers 12

  13. Dibbler :: Features (3) relay server client • Relay support • Server supports multiple links (local and remote) • Central administration 13

  14. Dibbler :: Features (3) client relay 1 relay 2 server • Cascaded relays support • Up to 32 relays • Great scalability 14

  15. Dibbler :: Features (4) • DNS servers configuration • Domain configuration • NTP servers configuration • Timezone configuration • SIP-related parameters configuration • NIS, NIS+ parameters configuration • Options renewal 15

  16. Dibbler :: Proposed extensions (1) FQDN update update client server DNS server • Fully Qualified Domain Name • Who should perform DNS Update: Server or Client? • draft-ietf-dhc-dhcpv6-fqdn-02.txt • Missing option: No update • Retrieve full name, do not update DNS (e.g. for logging purposes only) 16

  17. Dibbler :: Proposed extensions (2) thin/embedded client server • Startup: • Download kernel • Start system • Mount remote file system 17

  18. Dibbler :: Status of the project • Increasing feedback • Poland, Germany, Chech Republic, France, Spain, USA, China, Malaysia, Canada, Taiwan, Switzerland, Turkey, India • Users have ported Dibbler to various architectures • x86, x86_64, amd64, Sparc, PowerPC, Alpha • mipsel (embedded system, LinkSys wireless router WRT54) • Over 2 years of development • Team: • 2 people (2003, 3 months) • 1 person (2003-2005) • 2 new people expected in Q4 2005 • No budget 18

  19. Dibbler :: Download count • Spikes in Nov. 2004, Jan. 2005 and April 2005 • - Correlates with 0.3.0, 0.3.1 and 0.4.0 release dates 19

  20. Dibbler :: Areas of development • Support for remaining features • DNS Updates • Authorization • Prefix delegation • New parameter proposal • FQDN/DNS Updates improvement • Boot parameters for embedded devices • Migration from project to product • Extensive documentation • Predictable releases • Bug tracking system • User support • Better test methods • TAHI validation tool • ANVL conformance test environment by IXIA • Interoperability testing 20

  21. Questions 21

  22. Tomasz Mrugalski Gdansk University of Technology, Poland Thank youPlease visit Dibbler homepage:http://klub.com.pl/dhcpv6/

More Related