Multiplex communications – Fault recovery – Bypass an inoperative channel
Reexamination Certificate
2011-08-02
2011-08-02
Juntima, Nittaya (Department: 2462)
Multiplex communications
Fault recovery
Bypass an inoperative channel
C370S242000, C714S002000, C714S025000, C714S047300
Reexamination Certificate
active
07990852
ABSTRACT:
An apparatus and method of a network system between a host and a group of routers using virtual router redundancy protocol (“VRRP”) messages and bidirectional forwarding detection (“BFD”) sessions are disclosed. The network system is capable of facilitating a first communication between a host and a master router of multiple VRRP routers and establishing a BFD session between the host and the master router. When the BFD session fails, the priority of the master router is subsequently lowered and a backup router is activated. In one embodiment, the backup router capable of performing functions of the master router becomes a new master until the BFD session resumes.
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Cirkovic Sasha
Karuppiah Anuradha
Rajagopalan Balaji
Shah Chirayu A.
Juntima Nittaya
Jw Law Group
Tellabs San Jose, Inc.
Wu James M.
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