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- **********************************************************************
- DDN MGT Bulletin 22 NETWORK INFO CENTER for
- 16 Mar 1984 DCA DDN Program Mgmt Office
- (415) 859-3695 NIC@SRI-NIC
-
-
- Defense Data Network
-
- MANAGEMENT BULLETIN
-
- The DDN MANAGEMENT BULLETIN is published by the Network Information
- Center under DCA contract as a means of communicating official policy,
- procedures and other information of concern to management personnel at
- DDN facilities. Back issues may be obtained by FTP from the directory
- <DDN-NEWS> at SRI-NIC [26.0.0.73 and 10.0.0.51].
- **********************************************************************
-
-
- DOMAIN NAMES TRANSITION
-
- This memo is intended to remind all host personnel that at 0800 EST on
- March 21, 1984 every host on the MILNET/ARPANET will acquire a new
- official host name in accordance with RFC 897, the "Domain Name System
- Implementation Schedule". Briefly, all existing official names will
- become nicknames, and the new official name will be formed by adding
- the domain name ".ARPA" to the old official name. Special attention
- should be paid to the possible problems that your site software may
- encounter with the new names.
-
- For example, the old entry for USC-ISIF is:
-
- HOST : 10.2.0.52 : USC-ISIF,ISIF : DEC-1090T : TOPS20 :
- TCP/TELNET,TCP/SMTP,TCP/FTP,TCP/FINGER,UDP/TFTP :
-
- The new entry will be:
-
- HOST : 10.2.0.52 : USC-ISIF.ARPA,USC-ISIF,ISIF : DEC-1090T : TOPS20
- : TCP/TELNET,TCP/SMTP,TCP/FTP,TCP/FINGER,UDP/TFTP :
-
- For some hosts and programs this will cause no disruptions, but for
- others some problems may arise. For example, with over five hundred
- entries in the table, the addition of 500 names could exceed the space
- allocated to store the table in some programs. Another possible
- problem is that period (or dot, ".") is not now a legal character in
- host names, and some programs may not be able to parse these new
- names.
-
- An experimental domain-style name table has been available in parallel
- with the regular table for several months on the SRI-NIC machine, as
- <NETINFO>DHOSTS.TXT. No new domains are being introduced during the
- changeover. There will be only one top-level domain to begin with,
- and that is ".ARPA". Other top-level domain names such as ".DDN",
- will be announced at a later date. The revised table simply appends a
- domain name to each of the official host names included in the ARPA
- domain. Thus, programs can be constructed to deal with domain style
- names in a general way, without requiring any special programming to
- add or delete the string ".ARPA" to or from host names.
-
- The introduction of new domains is tied to the provision of domain
- servers by those domains. As new domains meet the requirements and
- are authorized, the domain names will also be included in the NIC host
- table.
-
- Eventually, the Internet will become too complex and will change too
- rapidly to keep a master table of all the hosts. The future plan is
- to simplify the master table by reducing it to entries for the domain
- names only. By the time this happens, all normal translation of host
- names into addresses across domains should take place by consulting
- the appropriate domain servers.
-
- DDN subscribers (including MILNET subscribers) are not required to
- implement Domain Name servers or protocols until a DDN Domain Names
- schedule is published, which will not be prior to Oct 1984. MILNET
- subscribers who choose to participate in the DARPA Internet on a
- voluntary basis are free to do so, and may implement Domain Names
- according to the Internet Schedule. The NIC will continue to maintain
- a complete host table of DDN subscribers until the (as yet
- unscheduled) complete transition of DDN subscribers to the Domain
- Names approach takes place.
-
- Please see RFC 881 [2] and RFC 897 [3] for further discussion of the
- Internet schedule, and RFC 882 [4] and RFC 883 [5] for information on
- the design and implementation of the domain style name service.
-
- References:
-
- [1] Harrenstien, K., V. White, and E. Feinler, "Hostnames Server"
- RFC 811, Network Information Center, SRI International, March
- 1982.
-
- [2] Postel, J., "The Domain Names Plan and Schedule", RFC 881, USC
- Information Sciences Institute, November 1983.
-
- [3] Postel, J., "Domain Name System Implementation Schedule", RFC 897,
- USC Information Sciences Institute, February 1984.
-
- [4] Mockapetris, P., "Domain Names - Concepts and Facilities",
- RFC 882, USC Information Sciences Institute, November 1983.
-
- [5] Mockapetris, P., "Domain Names - Implementation and
- Specification", RFC 883, USC Information Sciences Institute,
- November 1983.
-
-