Multiplex communications – Diagnostic testing – Fault detection
Reexamination Certificate
2009-07-17
2011-10-25
Harper, Kevin C (Department: 2462)
Multiplex communications
Diagnostic testing
Fault detection
Reexamination Certificate
active
08045477
ABSTRACT:
Techniques are provided for detecting at a controller associated with a physical layer of a network an occurrence of a failure within the physical layer of the network. In response to detecting the failure, the controller sends messages to at least first and second nodes in a transport layer of the network, where the messages are configured to indicate normal operations in the physical layer so as to prevent execution of transport layer protection processes for a period of time.
REFERENCES:
patent: 5781535 (1998-07-01), Russ et al.
patent: 7082467 (2006-07-01), Border et al.
patent: 7266715 (2007-09-01), Bazzinotti et al.
patent: 2005/0265346 (2005-12-01), Ho et al.
Bianchi David
Galimberti Gabriele Maria
Gazzola Maurizio
Martinelli Giovanni
Cisco Technology Inc.
Edell Shapiro & Finnan LLC
Harper Kevin C
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