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Status:

INFORMATIONAL

Authors:

J. Abley
T. Manderson

Stream:

INDEPENDENT

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DOI:  https://doi.org/10.17487/RFC7108

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Abstract

Anycast is a deployment technique commonly employed forauthoritative-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 anycastinfrastructure externally, i.e., without reference to insideknowledge about where and how such infrastructure has been deployed.Motivations for performing such measurement exercises includeoperational troubleshooting and infrastructure risk assessment. Inthe specific case of L-Root, the ability to measure and map anycastinfrastructure using the techniques mentioned in this document isprovided for reasons of operational transparency.

This document describes all facilities deployed at L-Root tofacilitate mapping of its infrastructure and serves as documentationfor L-Root as a measurable service.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.