Multiplex communications – Communication over free space – Message addressed to multiple destinations
Reexamination Certificate
2006-06-20
2006-06-20
Hsu, Alpus H. (Department: 2668)
Multiplex communications
Communication over free space
Message addressed to multiple destinations
C370S338000, C370S346000, C370S349000, C370S397000, C370S400000, C370S432000, C455S432100, C455S455000, C709S220000, C709S242000
Reexamination Certificate
active
07065059
ABSTRACT:
A technique restores adjacencies between a non-stop forwarding (NSF) router and its neighboring routers during reload of routing protocol software on the NSF router within a computer network. When a new instance of the routing protocol software is re-loaded, each interface of the NSF router is placed in a special state that enables it to receive incoming Hello packets from its neighboring routers. When placed in the special state, the interface passively “listens” for incoming Hello packets from the neighbors to determine which neighbors send the packets. The router thereafter promptly creates and sends a unicast Hello packet to each neighbor from whom it has received an incoming Hello packet and creates associated neighbor data structures.
REFERENCES:
patent: 5473599 (1995-12-01), Li et al.
patent: 5519704 (1996-05-01), Farinacci et al.
patent: 5926463 (1999-07-01), Ahearn et al.
patent: 6157649 (2000-12-01), Peirce et al.
patent: 6195705 (2001-02-01), Leung
patent: 6418139 (2002-07-01), Akhtar
patent: 6449279 (2002-09-01), Belser et al.
patent: 6487605 (2002-11-01), Leung
patent: 6507562 (2003-01-01), Kadansky et al.
patent: 6580715 (2003-06-01), Bare
patent: 6614757 (2003-09-01), Rochberger et al.
patent: 6631420 (2003-10-01), Li et al.
patent: 6701361 (2004-03-01), Meier
patent: 6711171 (2004-03-01), Dobbins et al.
patent: 6728214 (2004-04-01), Hao et al.
patent: 6820120 (2004-11-01), Keats et al.
patent: 6850486 (2005-02-01), Saleh et al.
patent: 6865160 (2005-03-01), Bare
patent: 6885677 (2005-04-01), Klevans
patent: 6950427 (2005-09-01), Zinin
patent: 6985959 (2006-01-01), Lee
patent: 2002/0150094 (2002-10-01), Cheng et al.
patent: 2003/0016624 (2003-01-01), Bare
patent: 2003/0056138 (2003-03-01), Ren
patent: 2005/0135234 (2005-06-01), Saleh et al.
Zinin, Alexey Dimitrievich, Technique for Resynchronizing LSDB in OSPF after a Software Reload in a Non-Stop Forwarding Intermediate Node of a Computer Network, U.S. Appl. No. 09/925,800.
Moy, J., OSPF Version 2, Request For Comments 2328, Network Working Group, Internet Engineering Task Force, 1998, pp. 1-244.
Cesari and McKenna LLP
Cisco Technology Inc.
Hsu Alpus H.
Jones Prenell
LandOfFree
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