Switching hub and LAN system

Multiplex communications – Pathfinding or routing – Switching a message which includes an address header

Reexamination Certificate

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C370S395530, C370S401000

Reexamination Certificate

active

07920567

ABSTRACT:
A switching hub is provided with a control unit for setting, for a port, a VLAN-ID comprising a subgroup ID of a subgroup constituting a VLAN, and a sub-ID of a group contained in the subgroup ID, and a switching processing unit for relaying a frame, which contains the VLAN-ID, via the port, which matches the VLAN-ID.

REFERENCES:
patent: 6633567 (2003-10-01), Brown
patent: 2005/0138149 (2005-06-01), Bhatia
patent: 2005/0220105 (2005-10-01), Yen et al.
patent: 2007/0097968 (2007-05-01), Du
patent: 2007/0140277 (2007-06-01), Chen et al.
patent: 2007/0147393 (2007-06-01), Wu et al.
patent: 2008/0002720 (2008-01-01), Chao et al.
patent: 1852240 (2006-10-01), None
patent: 2003-60675 (2003-02-01), None
patent: 2003-318937 (2003-11-01), None
patent: WO 2004/066563 (2004-08-01), None
Shimizu, “Ring Network with VLAN Tag”, IEEJ Trans, EIS, Oct. 1, 2005, pp. 1602-1607, vol. 125, No. 10.
Chinese Official Action dated Mar. 31, 2010 together with an English language translation.

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