A Summary of Various Mechanisms Deployed at L-Root for the Identification of Anycast Nodes (RFC7108)
Original Publication Date: 2014-Jan-01
Included in the Prior Art Database: 2014-Jan-16
Internet Society Requests For Comment (RFCs)
J. Abley: AUTHOR [+2]
The Domain Name System (DNS) is described in [RFC1034] and [RFC1035]. L-Root, one of the thirteen root servers, is deployed using anycast [RFC4786]; its service addresses, published in the A and AAAA Resource Record (RR) Sets for "L.ROOT-SERVERS.NET", are made available from a substantial number of semi-autonomous servers deployed throughout the Internet. A list of locations served by L-Root can be found at [ROOT-SERVERS].
Independent Submission J. Abley Request for Comments: 7108 Dyn, Inc. Category: Informational T. Manderson ISSN: 2070-1721 ICANN January 2014
A Summary of Various Mechanisms Deployed at L-Root for the Identification of Anycast Nodes
Anycast is a deployment technique commonly employed for authoritative-only servers in the Domain Name System (DNS). L-Root, one of the thirteen root servers, is deployed in this fashion.
Various techniques have been used to map deployed anycast infrastructure externally, i.e., without reference to inside knowledge about where and how such infrastructure has been deployed. Motivations for performing such measurement exercises include operational troubleshooting and infrastructure risk assessment. In the specific case of L-Root, the ability to measure and map anycast infrastructure using the techniques mentioned in this document is provided for reasons of operational transparency.
This document describes all facilities deployed at L-Root to facilitate mapping of its infrastructure and serves as documentation for L-Root as a measurable service.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
This is a contribution to the RFC Series, independently of any other RFC stream. The RFC Editor has chosen to publish this document at its discretion and makes no statement about its value for implementation or deployment. Documents approved for publication by the RFC Editor are not a candidate for any level of Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7108.
Manderson Informational [Page 1]
RFC 7108 L-Root Anycast Node Identification January 2014
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