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Zeroconf: Difference between revisions
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* Name translation via Multicast DNS (mDNS) (typically static, or managed via [[DNS]]) | * Name translation via Multicast DNS (mDNS) (typically static, or managed via [[DNS]]) | ||
* Service discovery via DNS Service Discovery (DNS-SD) (typically managed via a directory server) | * Service discovery via DNS Service Discovery (DNS-SD) (typically managed via a directory server) | ||
==Service Discovery== | |||
===Service Type Enumeration=== | |||
Service types can be enumerated by querying <tt>_services._dns-sd._udp.domain</tt> for a given domain. The reply is a set of PTR records. | |||
===Service Instance Enumeration=== | |||
Rather than using the [[SRV]] record, SD makes use of PTR. | |||
==See also== | |||
* "[http://tools.ietf.org/html/draft-cheshire-dnsext-dns-sd-10 DNS-based Service Discovery]" Stuart Chesire, 2011-02-27. | |||
* "[http://www.amazon.com/Zero-Configuration-Networking-Definitive-Guide/dp/0596101007 Zero-configuration Networking: The Definitive Guide]" from O'Reilly | |||
Revision as of 09:02, 18 November 2011
Courtesy of the IETF Zeroconf Working Group, by way of AppleTalk, NETBIOS, IPX and countless other nonstandardized protocols, Zero Configuration Networking attempts to simplify and automate local area networking (especially in the absence of suitable UIs). On UNIX, Avahi provides the mainstream Linux Zeroconf implementation; it is known as Bonjour on Apple products. Zeroconf's primary technologies include:
- Uni- and multicast address autoconfiguration via Link-Local Addressing (typically static, or managed via DHCP)
- Name translation via Multicast DNS (mDNS) (typically static, or managed via DNS)
- Service discovery via DNS Service Discovery (DNS-SD) (typically managed via a directory server)
Service Discovery
Service Type Enumeration
Service types can be enumerated by querying _services._dns-sd._udp.domain for a given domain. The reply is a set of PTR records.
Service Instance Enumeration
Rather than using the SRV record, SD makes use of PTR.
See also
- "DNS-based Service Discovery" Stuart Chesire, 2011-02-27.
- "Zero-configuration Networking: The Definitive Guide" from O'Reilly
