Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2008-05-20
2008-05-20
Marcelo, Melvin (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C370S221000
Reexamination Certificate
active
07376078
ABSTRACT:
A router synchronizes state information between a plurality of control units. The router includes a primary control unit and a standby control unit. To ensure proper operation of the router, the primary control unit maintains router resources by receiving state information from the router resources and maintaining the state information for consumers. The primary control unit performs this maintenance process by transmitting update operation messages to consumers and the standby control unit. The consumers respond with an acknowledgement message to both the primary control unit and the standby control unit. The control units use the sequence of these messages to keep all components within the router in sync. Upon assuming control, the standby control unit resumes updating the consumers with state information without having to “relearn” state information, e.g., by way of power cycling the router resources to a known state.
REFERENCES:
patent: 6327243 (2001-12-01), Gregorat
patent: 6421741 (2002-07-01), Minyard
patent: 6628649 (2003-09-01), Raj et al.
patent: 6968401 (2005-11-01), McBrearty et al.
patent: 6999411 (2006-02-01), Brewer et al.
patent: 7234001 (2007-06-01), Simpson et al.
patent: 2002/0067704 (2002-06-01), Ton
patent: 2002/0169794 (2002-11-01), Jones et al.
patent: 2003/0046604 (2003-03-01), Lau et al.
patent: 2004/0078619 (2004-04-01), Vasavada
patent: 2004/0078625 (2004-04-01), Rampuria et al.
patent: 2004/0083403 (2004-04-01), Khosravi
patent: 2005/0021844 (2005-01-01), Puon et al.
patent: 2005/0060427 (2005-03-01), Phillips et al.
patent: 2005/0193229 (2005-09-01), Garg et al.
patent: 2005/0281191 (2005-12-01), McGee et al.
patent: 2005/0283529 (2005-12-01), Hsu et al.
patent: 2006/0092940 (2006-05-01), Ansari et al.
patent: 2006/0256767 (2006-11-01), Suzuki et al.
U.S. Patent Application entitled “Routing Protocol Failover Between Control Units Within a Network Router,” U.S. Appl. No. 11/029,271, filed Jan. 5, 2005.
Amiocangioli Anthony D.
France Robert M.
Juniper Networks, Inc.
Marcelo Melvin
Riyami Abdullah
Shumaker & Sieffert P.A.
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