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ZERO CONFIGURATION NETWORKING

ZERO CONFIGURATION NETWORKING. TOPICS TO BE COVERED. Introduction Essential network services & configuration Managing IP host configuration Architectural issues of zeroconf Status of ongoing work Future implication Conclusion Reference. INTRODUCTION.

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ZERO CONFIGURATION NETWORKING

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  1. ZERO CONFIGURATION NETWORKING

  2. TOPICS TO BE COVERED • Introduction • Essential network services & configuration • Managing IP host configuration • Architectural issues of zeroconf • Status of ongoing work • Future implication • Conclusion • Reference

  3. INTRODUCTION • Today’s growing network infrastructure • Demerits of today’s networking • Zero configuration networking --A Boon to Network Infrastructure

  4. IP CONFIGURATION PARAMETERS • IP Address • Subnet mask • Default router address • Domain name • Domain name server

  5. IP CONFIGURATION • Static configuration • Dynamic configuration • Automatic configuration • Figure:

  6. DESTINATION ADDRESS DISCOVERY There are 3 ways • IP address configuration(self) • Domain name configuration(DNS) • Service discovery(DHCP) Multicast Address Allocation:MADCAP

  7. ARCHITECTURAL ISSUES IN ZEROCONF Zeroconf constraints are : • Ease of use • Scalability • Automatic translation to & from configured networking • Secure operation • Transparency • Independence

  8. ONGOING WORK • Requirement specification by IETF group • Zeroconf protocol areas under consideration • Automatic host configuration • Service discovery • Multicast domain name to address resolution • Automatic multicast address allocation • Transition to secure operation

  9. AUTOMATIC HOST CONFIGURATION • IPV6 has address auto configuration • Claim & defend protocol is insufficient • Reclaim will be added • Link-local address

  10. CREATION OF LINK-LOCAL ADDRESS • Link-local address: well known link-local prefix+interface identifier • Interface identifier:Interface's link-layer address • Link-local prefix:FE80::0

  11. CREATION cont… • Link-local address is created after the following events: • Interface is initialized at system startup time • Interface attaches to a link for the first time • Interface is reinitiated after a temporary interface failure • Interface becomes enabled by system management having been administratively disabled

  12. MULTICAST DOMAIN NAME TO ADDRESS RESOLUTION *Multicast DNS(mdns) • Claim and defend mechanism • “stub” naming service in hosts • Hosts assign themselves a domain name with “.local” suffix • Multicast to broadcast address(224.0.0.251) • Claim & defend mechanism applies • Host can use caches.

  13. SERVICE DISCOVERY • Service allocation protocol(SLP) • Can use both in IPV4 & IPV6 • SLP agent is deployed on each host • Multicast the message with type of service attributes • 3rd party can also cache this information

  14. AUTOMATIC MULTICAST ADDRESS ALLOCATION • Allows a host to obtain an address allocation for a multicast group for the host’s own purposes • Still in development stage, but there is one protocol which will support this • Zeroconf Multicast allocation protocol (ZMAAP)

  15. Working of ZMAAP • Multicast Address Allocation Server (MAAS): A node providing multicast address allocation services to network clients. • Mini-MAAS: A service providing multicast address allocation services to applications running on the same host. Mini-MAASs cooperate to provide network-wide services in small networks without MAASs.It is local to a host. • Mini-MAAS contacts other Mini-MAAS for address allocation

  16. Translation to secure operations • Future work • Feasible inside the computers or in emergency shelters • Scale to internet • Owners & operations cannot know the presence of a network

  17. CONCLUSION

  18. REFERENCE • draft-cheshire-dnsext-multicastdns-05.txt: Stuart Cheshire, Marc Krochmal, 7th June 2005 • draft-ietf-zeroconf-zmaap-02.txt: Octavian Catrina, Dave Thaler, Bernard Aboba, Erik Guttman.org/ • http://Zeroconf Zero Configuration networking.htm  • IPv6 Stateless Address Autoconfiguration: S. Thomson, Bellcore, T.Narten  • Zero Configuration Networking: Erik GUTTMAN  •  http://zeroconf.org/ • http://www.multicastdns.org/ • http://en.wikipedia.org/wiki/zeroconf • http://en.wikipedia.org/wiki/service_location_protocol

  19. THANK YOU

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