Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2007-06-05
2007-06-05
Kim, Kevin (Department: 2611)
Pulse or digital communications
Transceivers
Modems
C370S245000, C370S450000, C725S111000
Reexamination Certificate
active
10422613
ABSTRACT:
Methods, apparatus, and computer-readable media are disclosed for performing diagnostic tests of a communication link between a headend and a cable modem without having to assign an IP address to the cable modem. The diagnostic tests are performed at the MAC layer and test the state of the hardware between and including the cable modem termination system (CMTS) and a selected cable modem. By doing so, a network operator is able to more easily focus in on a potential problem in cable RF/MAC connectivity between the two components by first eliminating (or identifying) a problem with hardware before focusing on problem-solving at the software level, typically at the Network layer, at which point the cable modem is assigned an IP address.
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Chen Wei-Sing
Khaunte Sunil
Millet Mark E.
Roeck Guenter E.
Beyer & Weaver, LLP
Cisco Technology Inc.
Kim Kevin
LandOfFree
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