Multiplex communications – Pathfinding or routing – Through a circuit switch
Reexamination Certificate
2011-05-17
2011-05-17
Sheikh, Ayaz R (Department: 2476)
Multiplex communications
Pathfinding or routing
Through a circuit switch
C370S216000
Reexamination Certificate
active
07944913
ABSTRACT:
The present invention provides a node capable of preventing the problems caused by switching between traffic communication paths when a link failure occurs. According to an embodiment of the invention, among ports of a node10, ports P1and P2connected to a link between the node10and a node20are registered in a virtual port VP1, and ports P3and P4connected to a link between the node10and the node30are registered in a virtual port VP2. The virtual ports VP1and VP2are registered in a virtual port VP3allocated to a virtual LAG group. When one link between the node10and the node20is disconnected, the node10transmits frames, which have been transmitted from a physical port connected to the link, from the virtual port including the physical port, among the virtual ports belonging to the virtual port VP3allocated to the virtual LAG group.
REFERENCES:
patent: 6298061 (2001-10-01), Chin et al.
patent: 2002-232427 (2002-08-01), None
“IEEE Std 802.3ad Amendment to Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications”, “43.Link Aggregation”, IEEE (Institute of Electrical and Electronics Engineers Inc), 2000, pp. 95-173.
NEC Corporation
Scully , Scott, Murphy & Presser, P.C.
Sheikh Ayaz R
Wong Blanche
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