State information and routing table updates in large scale...

Details State information and routing table updates in large scale... State information and routing table updates in large scale...

2005-09-13

2005-09-13

Chin, Wellington (Department: 2664)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S220000

Reexamination Certificate

active

06944131

ABSTRACT:
In a communication network comprising nodes and links between the nodes, a controller node disseminates link state information. A nodal routing table exists at each node comprising routes between pairs of nodes. The nodal routing table is either populated by the given node based on network information received from the controlling node or populated at the controlling node and received by the given node. Each node receives heartbeat signals from its neighbouring nodes. An unexpected delay between heartbeat signals may be perceived as a failure of a link. The perceived failure of that link is reported by the perceiving node to the controlling node. Upon receiving link failure information from a node, the controlling node may determine a subset of nodes in the network influenced by the link failure and indicate the link failure to the determined subset of influenced nodes.

REFERENCES:
patent: 5138615 (1992-08-01), Lamport et al.
patent: 6098107 (2000-08-01), Narvaez-Guarnieri et al.
patent: 6163696 (2000-12-01), Bi et al.
patent: 6349091 (2002-02-01), Li
patent: 6377551 (2002-04-01), Luo et al.

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