Managing power allocation to Ethernet ports in the absence of mutually exclusive detection and powering cycles in hardware
First Claim
1. A method of allocating power among one or more ports in a switch, comprising:
- pre-allocating a first configuration power to a selected port, wherein the first configuration power is representative of a power drawn from the selected port by a non-system powered device coupled to the selected port;
determining whether a device coupled to the selected port draws more power than the first configuration power; and
allocating a second configuration power representative of a power limit of the device to the selected port if the selected port draws more power than the first configuration power.
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Abstract
A method of allocating power to ports in an Ethernet switch, including: (1) assigning a configuration power to a selected port, wherein the assigned configuration power is less than a power supplied by the selected port to a powered, (2) enabling and powering the selected port in a single indivisible step, (3) determining the power limit of a device coupled to the selected port, (4) comparing the power supplied by the selected port to the device with the configuration power assigned to the selected port, and (5) if the power supplied by the selected port to the device is greater than the configuration power assigned to the selected port, then increasing the configuration power of the selected port to correspond with the power limit of the device.
57 Citations
20 Claims
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1. A method of allocating power among one or more ports in a switch, comprising:
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pre-allocating a first configuration power to a selected port, wherein the first configuration power is representative of a power drawn from the selected port by a non-system powered device coupled to the selected port; determining whether a device coupled to the selected port draws more power than the first configuration power; and allocating a second configuration power representative of a power limit of the device to the selected port if the selected port draws more power than the first configuration power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of allocating power among one or more ports in a switch, comprising:
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assigning a first configuration power to a selected port, wherein the first configuration power is less than any power drawn from the selected port by a device powered by the selected port; determining that a device coupled to the selected port draws more power than the first configuration power, and in response, increasing the configuration power assigned to the selected port to a second configuration power that corresponds with a power limit of the device. - View Dependent Claims (13, 14, 15, 16)
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17. A switch comprising:
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a port; a processor that pre-allocates a first configuration power to the port, wherein the first configuration power is less than any power drawn from the port by a device powered by the port; and port control circuitry that determines whether a device coupled to the port draws more power than the first configuration power, and re-allocates a second configuration power representative of a power limit of the device to the port if the port draws more power than the first configuration power. - View Dependent Claims (18, 19, 20)
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Specification