Multiplex communications – Fault recovery – Bypass an inoperative channel
Reexamination Certificate
2006-08-08
2006-08-08
Nguyen, Chau (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative channel
C370S241100, C370S245000, C370S256000, C714S025000
Reexamination Certificate
active
07088674
ABSTRACT:
A virtual LAN (VLAN) has a number of segments connected by connections in a connection-oriented network. The topology of the VLAN is defined by a spanning tree. Cell sources on the connections send continuity checking cells in a direction toward the spanning tree root to corresponding cell sinks. The cell sinks can trigger a change in the topology of the VLAN if the reception of continuity checking cells is interrupted. The connection-oriented network may be an ATM network. The continuity checking cells may be OAM cells.
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Cooper Gregory S.
MacKiewich Blair T.
Wen Yuming
Alcatel Canada Inc.
Dyke Kerri M.
Nguyen Chau
Oyen Wiggs Green & Mutala LLP
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