Ring node apparatus

Details Ring node apparatus Ring node apparatus

2011-02-08

2011-02-08

Rao, Seema S (Department: 2462)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S221000, C370S225000, C709S239000

Reexamination Certificate

active

07885181

ABSTRACT:
According to an aspect of an embodiment, a node apparatus used in at least part of nodes in a network formed by a plurality of nodes coupled in the shape of a ring, comprising: a working node function performing unit for performing functions as a working apparatus that selectively drops a frame destined for a terminal hosted by the node itself among frames transmitted on the ring and adds a frame from the terminal hosted by the node itself to frames transmitted on the ring; a back-up function performing unit for performing functions as a back-up apparatus that lets a frame destined for a terminal hosted by the node itself pass through to an adjacent node and discards a frame from the terminal hosted by the node itself; and a function selection unit for selectively enabling one of the working node function performing unit and the back-up function performing unit.

REFERENCES:
patent: 7345991 (2008-03-01), Shabtay et al.
patent: 2006/0007854 (2006-01-01), Yu
patent: 11-041282 (1999-02-01), None

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