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US 7,889,757 B2Granted
Method and apparatus of preventing physical layer from establishing unsupported links
AssigneeCisco Technology, Inc.
InventorsJason R. Visneski, Chris Desiniotis
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for preventing unsupported links between a host device and a link partner over a network is disclosed. In one embodiment, a link control signal is employed to release the reset of the candidate PHY, place a candidate PHY of the host device in a boot state, determining whether the candidate PHY is fully functional, and release the candidate PHY to establish link with the link partner over the network.
Claims27
A method, comprising:
- detecting a reset of a physical layer device (PHY) of a device;
- placing the PHY in a programming state in response to detecting the reset of the PHY of the device;
- determining whether the PHY is fully functional;
- and
- releasing the PHY to establish a link with a link partner over a network in accordance with the determination of whether the PHY is fully functional, thereby ensuring that the PHY is not released to establish a link with a link partner until the PHY is no longer in the programming state.
2 more elements
An apparatus, comprising:
- a processor;
- and
- a memory, at least one of the processor or the memory being adapted for:
- detecting a reset of a physical layer device (PHY);
- placing the PHY in a programming state in response to detecting the reset of the PHY of the device;
- determining whether the PHY is fully functional;
- and
- releasing the PHY to establish a link with a link partner over a network in accordance with the determination of whether the PHY is fully functional, thereby ensuring that the PHY is not released to establish a link with a link partner until the PHY is no longer in the programming state.
5 more elements
An apparatus, comprising:
- means for detecting a reset of a physical layer device (PHY) of a device;
- means for placing the PHY in a programming state in response to detecting the reset of the PHY of the device;
- means for determining whether the PHY is fully functional;
- and
- means for releasing the PHY to establish a link with a link partner over a network in accordance with the determination of whether the PHY is fully functional, thereby ensuring that the PHY is not released to establish a link with a link partner until the PHY is no longer in the programming state.
2 more elements
A method, comprising:
- detecting a reset of a physical layer device (PHY) of a device;
- placing the PHY in a programming state in response to detecting the reset of the PHY of the device;
- determining whether the PHY is fully functional;
- and
- releasing the PHY to establish a link with a link partner over a network in accordance with the determination of whether the PHY is fully functional, thereby ensuring that the PHY is not released to establish a link with a link partner until the PHY is no longer in the programming state, wherein a control internal to the PHY is configured to indicate when the PHY is fully functional.
2 more elements
Dependencies are inferred from the claim text.