System for internetwork communication between local areas networ

Details System for internetwork communication between local areas networ System for internetwork communication between local areas networ

1992-03-04

1992-12-01

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 855, H04J 302

Patent

active

051684969

ABSTRACT:
An internetwork communication system provides communication from a first local area network to a second, ring-type, local area network via a bridge. The bridge receives a frame from the first local area network and transmits a dummy frame followed by a transfer frame to the second local area network. The transfer frame defines a node of the second local area network as a distant apparatus (receiver) and a node of the first local area network as a self apparatus (sender). The bridge later receives the dummy frame from the second local area network, after transmission of the dummy frame around the ring, and deletes the dummy frame and the transfer frame received following the dummy frame so that the communication in the second local area network does not circulate indefinitely around the ring. As an alternative to using a dummy frame, the bridge can receive the transfer frame, after circulation around the second local area network, and compare the distant apparatus of the received internetwork transfer frame with a stored distant apparatus address. When the received distant apparatus address matches the stored distant apparatus address, the bridge deletes the transfer frame from the second local area network.

REFERENCES:
patent: 3890471 (1975-06-01), Hachenburg
patent: 4287592 (1981-09-01), Paulish
patent: 4680756 (1987-07-01), Sugimoto et al.
patent: 4683563 (1987-07-01), Rouse
patent: 4922503 (1990-05-01), Leone
patent: 4947390 (1990-08-01), Sheehy
Daniel T. W. Sze, "A Metropolitan Area Network", IEEE Journal on Selected Areas in Communications, vol. SAC-3, No. 6, pp. 815-824, N.Y., U.S.A.
ANSI/IEEE Std. 802.5-1985 ISO/DP 8802/5, American National Standard Local Area Networks 8025, ANSI/IEEE Standard ISO Draft Proposal, Token Ring Access Method (Mar. 1985).
X3T9/85-X3T9.5/84-49 REV-4.0, FDDI Station Management (SMT), Draft Proposed American National Standard (Aug. 1, 1988).
"Token Ring Access Method and Physical Layer Specification", ANSI/IEEE Std. 802.5-1985, IEEE (Apr. 1985).
M. Lee: "FDDI-II, Working Paper", ANSI X3T9 (May 1986).
ANSI/IEEE Std. 802.5-1989, IEEE Standards for Local Area Networks, Token Ring Access Method and Physical Layer Specifications (Sep. 29, 1989).
ISO 9314-2:1989, International Standard, Information Processing Systems--Fibre Distributed Data Interface (FDDI)--Part 2: Token Ring Media Access Control (MAC).
ASC Technical Committee, X3Y9.5, Jun. 16, 1987, FDDI-II Working Paper.
"SUPERNET for Fiber Distributed Data Interface", Advanced Micro Devices, Feb. 1988.

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