Wake-On-Link
First Claim
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1. A method comprising:
- monitoring, at a network switch that is in stand-by mode, a loss of signal terminal of the network switch;
identifying, at the network switch that is in stand-by mode, an inactive state of the loss of signal terminal; and
in response to identification of the inactive state of the loss of signal terminal, initiating, at the network switch, a wake-up procedure to put the network switch in an active mode.
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Abstract
A connectivity device, such as a switch may consume lesser power by transitioning into stand-by mode in response to a command from an upstream connectivity device, such as another switch. In the stand-by mode the switch may power down circuitry of the switch that handles incoming messages. The switch may be powered up from the stand-by mode by using a PHY or Layer-1 components of the switch.
34 Citations
20 Claims
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1. A method comprising:
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monitoring, at a network switch that is in stand-by mode, a loss of signal terminal of the network switch; identifying, at the network switch that is in stand-by mode, an inactive state of the loss of signal terminal; and in response to identification of the inactive state of the loss of signal terminal, initiating, at the network switch, a wake-up procedure to put the network switch in an active mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device comprising:
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a communication interface circuitry configured to send and receive data to and from an upstream network device; a terminal configured to indicate a state of communication with the upstream network device, wherein a first state of the terminal is indicative of a loss of signal from the upstream network device, and a second state of the terminal is indicative of a signal being received from the upstream network device; and a power management processor configured to monitor the terminal, and further configured to put the communication interface in sleep mode or active mode in response to a change of the state of the terminal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory computer readable storage medium comprising instructions executable by a processor, the computer readable storage medium comprising:
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instructions to configure a network switch in a sleep state, wherein, in the sleep state, a central processing unit (CPU) and a communication interface of the network switch are non-operational; instructions to detect an absence of signal over a communication link between the network switch and an upstream network device; and instructions to configure the network switch in an active state in response to identification of resumption of signal over the communication link, wherein, in the active state, the CPU and the communication interface of the network switch are operational. - View Dependent Claims (20)
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Specification