Dual receive, dual transmit fault tolerant network arrangement a

Details Dual receive, dual transmit fault tolerant network arrangement a Dual receive, dual transmit fault tolerant network arrangement a

1997-12-12

2000-03-21

Olms, Douglas W.

Multiplex communications

Fault recovery

Bypass an inoperative station

370228, H04J 116, H04J 314, H04L 100, H04L 1226

Patent

active

060410361

ABSTRACT:
A fault tolerant network using a dual cross path for real-time switching and packet handling method are disclosed. In DRDT-II, one of two packets received from two input ports is selected, the other is discarded, and two duplicated packets are transmitted through two output ports. That is, one link bypasses one node. In DRDT-III, the other link bypasses two nodes. Even when fault occurs in neighboring nodes at the same time, only these nodes are abandoned, and remaining nodes can be communicated with one another, improving the reliability of the network.

REFERENCES:
patent: 5680389 (1997-10-01), Douglas et al.
patent: 5848055 (1998-12-01), Fedyk et al.
patent: 5936938 (1999-08-01), Weldon et al.
patent: 5949754 (1999-09-01), Takahashi
DRDT: Highly Survivable Network Architectures; Youngsik Baek, Sangman Lee, Hun Kang; Apr. 1997; pp. 999-1003.

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