Network system

Details Network system Network system

2005-05-10

2005-05-10

Ton, Dang (Department: 2666)

Multiplex communications

Fault recovery

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

C370S225000, C370S236000, C370S289000, C709S242000, C714S002000

Reexamination Certificate

active

06891793

ABSTRACT:
When an edge node whose order is lower than that of a primary switch detects a failure of the primary switch, the edge node requests a secondary switch that the secondary switch serves as a host of the edge node itself. At this time, the secondary switch establishes a connection between the secondary switch and the edge node, generates routing information and label information in a core network which does not comprise the primary switch to give the routing information and the label information to the edge node. The secondary switch performs communication between the edge node and the secondary switch by using the routing information and the label information which are received from the secondary switch.

REFERENCES:
patent: 6034961 (2000-03-01), Masuo et al.
patent: 6347073 (2002-02-01), Hiscock et al.
patent: 6411599 (2002-06-01), Blanc et al.

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