Method and system for PHY loop detection
AssigneeCisco Technology, Inc.
InventorsSaravan Arunachalam, Hugh Barrass
Life of this patent
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Abstract
A method, system and apparatus are provided for detecting a loop-back in a physical layer on an Ethernet link. In the physical layer, a device sends a base page on the Ethernet link. The base page has at least one next page capability bit set. Subsequently, the device receives a received base page. Thereafter, for detecting the loop-back, the next page capability bit is set in the received base page is determined.
Claims17
A method comprising:
- sending in a physical layer, by a device on an ethernet link, a base page with an indicator that indicates that a loop-back in the physical layer exists;
- receiving in the physical layer, by the device on the ethernet link, a received base page;
- and
- examining the indicator in the received base page for detecting a loop-back in the physical layer.
A system comprising:
- means for sending in a physical layer a base page with an indicator that indicates that a loop-back in the physical layer exists;
- means for receiving in the physical layer a received base page;
- and
- means for examining the indicator in the received base page for detecting a loop-back in the physical layer.
A machine-readable non-transitory medium for detecting loop-back in a physical layer on an Ethernet link including instructions executable by the machine-readable non-transitory medium comprising:
- one or more instructions for sending in a physical layer a base page with an indicator that indicates that a loop-back in the physical layer exists;
- one or more instructions for receiving in the physical layer a received base page;
- and
- one or more instructions for examining the indicator in the received base page for detecting a loop-back in the physical layer.
Dependencies are inferred from the claim text.