Data communication apparatus, method for its network...

Details Data communication apparatus, method for its network... Data communication apparatus, method for its network...

2009-02-06

2010-12-07

Ahmed, Salman (Department: 2476)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S255000, C370S397000, C370S409000, C707S966000, C707S967000

Reexamination Certificate

active

07848339

ABSTRACT:
A transmission apparatus for participating in a virtual network constructed on a physical IP network, said transmission apparatus including: a node link monitoring unit configured to search an in-subnetwork node, which is a virtual network node existing within a first IP subnetwork that the transmission apparatus belongs to; a gatenode link monitoring unit configured to search an in-subnetwork gatenode, which is a virtual network gatenode existing within the IP subnetwork, wherein the in-subnetwork gatenode is linked to an out-subnetwork node that exists within a second IP subnetwork different from the first IP subnetwork; a detecting unit configured to detect a number of in-subnetwork gatenodes that exist within the first IP subnetwork; and a node link processing unit configured to determine whether a node linked to the transmission apparatus is an out-subnetwork gatenode based on the number of in-subnetwork gatenodes existing within the first IP subnetwork.

REFERENCES:
patent: 2008/0301214 (2008-12-01), Li et al.
patent: 2004-040688 (2004-02-01), None
patent: 2005-252596 (2005-09-01), None

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