The Sigma network

ABSTRACT

The Sigma network is one of the most important element of the Sigma system which is designed to improve productivity of a software. The Sigma network has been developed in order to establish a infrastructure which acts as development environment provided by logically integrated Sigma workstations spread over various companies and inside the companies which approve the concept of the Sigma system. It is also included in the scope of its development to enrich application programs mainly for message communication required by network community. The network supports IEEE802.3, digital packet exchange (X.25) and serial line under the TCP/IP layer and realizes end-to-end immediate communication. Sigma network is a name oriented virtual network defined by hierarchical name space (domain) and named objects placed under the domains. Its key feature lies in the network management mechanism, i.e. Name Server.

REFERENCES

• 1: IPA, Sigma System Network Plan (in Japanese), lxdormation. technology Promotion Agency, Japan, March 1986.
• 2: IPA, Sigma System Construction Basic Plan (in Japanese), Information-technology Promotion Agency, Japan, December 1985.
• 3: IPA, Sigma Operating System Function Specifications (in Japanese), Information-technology Promotion Agency, Japan, July 1986.
• 4: Jun Murai, "Study on Network Software in Operating Systems for Distributed Environment," Ph.D Dissertation, Keio University, Japan, March 1987.
• 5: IPA, Survey Report on Method for Realizing Sigma System Name Server (in Japanese), Information-technology Promotion Agency, Japan, February 1986.
• 6: K.Harrensfien, M. Stahl, E.Feinler, "RFC952 DoD Internet Host Table Specification," DDN Protocol Handbook, vol. Three, pp. 249-254, DDN Network Information Center, SRI International, CA, October 1985.
• 7: I.Winston, "RFC948 Transmission of IP Datagrams over IEEE802.3 Networks," DDN Protocol Handbook, vol. Three, pp. 601-605, DDN Network Information Center, SRI International, CA, lune 1985.
• 8: C.I-Iornig, "RFC894 Transmission of IP Datagrams over Eaternet Networks," DDN Protocol Handbook, vol. Three, pp. 607-609, DDN Network Information Center, SKI International, CA, April 1984.
• 9: J.Korb, "RFC877 Internct Protocol on X.25 Networks," DDN Protocol Handbook, vol. Three, pp. 573-574, DDN Network Information Center, SRI International, CA, September 1983.
• 10: IPA, Specifications of Sigma Name Server and Various Information Inquiry Functions (in Japanese), Irffoxmation-technology Promotion Agency, Japan, February 1987.
• 11: EPA, Sigma Network Application Function Specifwations (in Japanese), Information-technology Promotion Agency, Japan, March 1987.
• 12: Derek C. Oppen , Yogen K. Dalal, The clearinghouse: a decentralized agent for locating named objects in a distributed environment, ACM Transactions on Information Systems (TOIS), v.1 n.3, p.230-253, July 1983 [doi>10.1145/357436.357439]
• 13: Michael D. Schroeder , Andrew D. Birrell , Roger M. Needham, Experience with Grapevine (Summary): the growth of a distributed system, Proceedings of the ninth ACM symposium on Operating systems principles, p.141-142, October 10-13, 1983, Bretton Woods, New Hampshire, United States
• 14: Andrew D. Birrell , Roy Levin , Michael D. Schroeder , Roger M. Needham, Grapevine: an exercise in distributed computing, Communications of the ACM, v.25 n.4, p.260-274, April 1982 [doi>10.1145/358468.358487]
• 15: L.Landweber, M.Litzkow, D.Neuhengen, M.Solomon, Architecture of The CSNET Name Server, ACM, 1983.
• 16: J.Postel, "Internet Name Server," IEN 116, Informatin Sciences Institute, August 1979.
• 17: Douglas B Terry , Mark Painter , David W. Riggle , Songnian Zhou, The Berkeley Internet Name Domain Server, University of California at Berkeley, Berkeley, CA, 1984
• 18: P.Mockapetris, J'.Postel, P.Kirton, Name Server Design for Distributed System, 1984.
• 19: $.Postel, "RFC821 Simple Mail Transfer Protocol," DDIV Protocol Handbook, vol. Two, pp. 809-880, DDN Network Informarion Center, SRI international, CA, August 1982.
• 20: J. Postel, $.Reynolds, "RFG854 Telnet Protocol Specification,'' DDN Protocol Handbook, vol. Two, pp. 575-589, DDN Network Information Center, SRI International, CA, May 1983.
• 21: $.Postel, J.Reynolds, "RFC959 File Transfer Protocol (FTP)," DDN Protocol Handbook, vol. Two, pp. 739-807, DDN Network Information Center, SKI International, CA, October 1985.
• 22: J. Murai , A. Kato, Researches in network development of JUNET, Proceedings of the ACM workshop on Frontiers in computer communications technology, p.68-77, August 11-13, 1987, Stowe, Vermont, United States
• 23: EPA, Site Information Table Specifications for Sigma Network (in Japanese), Information-technology Promotion Agency, Japan, September 1986.

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.0 General
          Subjects: Data communications

Additional Classification:
  C. Computer Systems Organization

General Terms:
Design