RFC 3258 (rfc3258) - Page 1 of 11
Distributing Authoritative Name Servers via Shared Unicast Addresses
Alternative Format: Original Text Document
Network Working Group T. Hardie Request for Comments: 3258 Nominum, Inc. Category: Informational April 2002 Distributing Authoritative Name Servers via Shared Unicast Addresses Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2002). All Rights Reserved. Abstract This memo describes a set of practices intended to enable an authoritative name server operator to provide access to a single named server in multiple locations. The primary motivation for the development and deployment of these practices is to increase the distribution of Domain Name System (DNS) servers to previously under-served areas of the network topology and to reduce the latency for DNS query responses in those areas. 1. Introduction This memo describes a set of practices intended to enable an authoritative name server operator to provide access to a single named server in multiple locations. The primary motivation for the development and deployment of these practices is to increase the distribution of DNS servers to previously under-served areas of the network topology and to reduce the latency for DNS query responses in those areas. This document presumes a one-to-one mapping between named authoritative servers and administrative entities (operators). This document contains no guidelines or recommendations for caching name servers. The shared unicast system described here is specific to IPv4; applicability to IPv6 is an area for further study. It should also be noted that the system described here is related to that described in [ANYCAST], but it does not require dedicated address space, routing changes, or the other elements of a full anycast infrastructure which that document describes. Hardie Informational
