Domain Names - Concepts and Facilities-英文文献.pdfVIP

Network Working Group P. Mockapetris Request for Comments: 882 ISI November 1983 DOMAIN NAMES - CONCEPTS and FACILITIES ++ | | | This RFC introduces domain style names, their use | | for ARPA Internet mail and host address support, | | and the protocols and servers used to implement | | domain name facilities. | | | | This memo describes the conceptual framework of the | | domain system and some uses, but it omits many | | uses, fields, and implementation details. A | | complete specification of formats, timeouts, etc. | | is presented in RFC 883, Domain Names - | | Implementation and Specification. That RFC | | assumes that the reader is familiar with the | | concepts discussed in this memo. | | | ++ INTRODUCTION The need for domain names As applications grow to span multiple hosts, then networks, and finally internets, these applications must also span multiple administrative boundaries and related methods of operation (protocols, data formats, etc). The number of resources (for example mailboxes), the number of locations for resources, and the diversity of such an environment cause formidable problems when we wish to create consistent methods for referencing particular resources that are similar but scattered throughout the environment.