CN107547209B - Power distribution method and device - Google Patents
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Abstract
The disclosure relates to a power distribution method and a device, comprising determining an enabling Power Supply Equipment (PSE) in a Power Over Ethernet (POE) switch, wherein the enabling PSE represents a PSE for starting a POE function; determining the number of enabled ports of the enabling PSE as the number of reserved ports, wherein the enabled ports represent ports for starting POE functions; and determining the reserved power of the enabling PSE according to the number of the reserved ports and the maximum power of the enabling ports. Through reserving power for the enabled port of the enabling PSE, not reserving power for all ports of the enabling PSE, more refined POE power reservation can be realized according to the power distribution method and the power distribution device of the embodiment of the disclosure, so that the reservation of the POE power is more reasonable, the adjustment operation of the reserved power is reduced, and the power supply capacity of the PSE is improved.
Description
Technical Field
The present disclosure relates to the field of communications and power supply technologies, and in particular, to a power distribution method and apparatus.
Background
POE (Power Over Ethernet ) means that a Device remotely powers an external PD (Powered Device) through an Ethernet port by using a twisted pair. The POE system includes a POE Power source, a PSE (Power Sourcing Equipment), and a PD. The POE power supply is used for supplying power to the whole POE system, the PSE is equipment directly supplying power to the PD, and the PD is equipment receiving the power supplied by the PSE, such as an IP telephone, a wireless AP (Access Point), a portable equipment charger, a card swiping machine, a network camera and the like.
After the POE function of the PSE is started, the POE system can reserve power for the PSE and supply power for the PSE. If the reserved power of the PSE is large, the new PSE may overload the power of the POE system, resulting in powering down part of the PSE. At this point, the user may be required to manually configure the reserved power of the individual PSEs to be reduced in order to power up the PSEs all together. If the PSE reserved power is small, the PSE has a low ability to power the powered device, which may result in less powered devices or lower power accessible to the POE system.
Disclosure of Invention
In view of this, the present disclosure provides a power allocation method and apparatus, which can reasonably reserve POE power.
According to an aspect of the present disclosure, a power allocation method is provided, where the method is applied to a Power Over Ethernet (POE) switch, and the method includes: determining an enabling Power Supply Equipment (PSE) in the POE switch, wherein the enabling PSE represents a PSE for starting a POE function; determining the number of enabled ports of the enabling PSE as the number of reserved ports, wherein the enabled ports represent ports for starting POE functions; and determining the reserved power of the enabling PSE according to the number of the reserved ports and the maximum power of the enabling ports.
According to another aspect of the present disclosure, there is provided a power distribution apparatus applied to a POE switch, the apparatus including: an enabling device determining module, configured to determine an enabling PSE in the POE switch, where the enabling PSE indicates a PSE that turns on a POE function; a first number determining module, configured to determine the number of enabled ports of the enabling PSE as a reserved port number, where an enabled port indicates a port for starting a POE function; and the reserved power determining module is used for determining the reserved power of the enabling PSE according to the number of the reserved ports and the maximum power of the enabling ports.
The number of the enabled ports of the enabling PSE is determined as the number of reserved ports, the maximum power of the enabling ports is determined according to the number of the reserved ports and the maximum power of the enabling ports, the reserved power of the enabling PSE is determined, the power can be reserved for the enabling ports of the enabling PSE according to the power distribution method and the power distribution device of the aspects of the disclosure, the power is not reserved for all the ports of the enabling PSE, more refined POE power reservation can be achieved, the reservation of the POE power is more reasonable, the adjustment operation of the reserved power is reduced, and the power supply capacity of the PSE is improved.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure;
fig. 2 shows a schematic diagram of a POE system according to an embodiment of the present disclosure;
FIG. 3 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure;
FIG. 4 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure;
FIG. 5 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure;
FIG. 6 shows a block diagram of a power distribution apparatus according to an embodiment of the present disclosure;
fig. 7 shows a block diagram of a power distribution apparatus according to an embodiment of the present disclosure;
fig. 8 shows a block diagram of a power distribution apparatus according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
Fig. 1 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure. The method can be applied to a POE switch, as shown in fig. 1, and the method for power allocation includes:
step S11, determining an enabled PSE in the POE switch, the enabled PSE indicating a PSE that turns on the POE function.
In a POE system, a power supply device that supplies power is called a PSE, and the PSE has a POE function. Fig. 2 shows a schematic diagram of a POE system. As shown in fig. 2, the POE system includes a POE power source, a PSE, a PD, and the like. Wherein, POE power can be for whole POE system power supply, and PSE can be for the PD power supply, and the PD can be driven by the electric power that PSE provided. In the case that the PSE turns on the POE function, the POE power source may reserve power for the PSE and supply power to the PSE. After the PSE with the POE function is powered on by the POE Power source, Power of the POE Power source is injected into the twisted pair through a Power Interface (PI) to Power the PD.
The POE switch may mean an ethernet switch having a POE function. The POE switch can transmit direct current on a line used for transmitting data, a special line for independent power transmission can be omitted, and system wiring is simplified. A POE switch can include a plurality of POE capable PSEs. The POE switch may turn on part or all of the POE functions of the PSE. Enabling the PSE may be used to indicate turning on the POE function.
In one possible implementation, the POE switch may turn on the POE function of the PSE through the command line. The POE switch may also open the POE function of the PSE in other manners, which is not limited in this disclosure.
In an example, the PSE may be an interface board with a POE function, the POE switch may carry one or more interface boards with a POE function, and the interface boards may be identified according to the PSE ID. The interface board with the POE function can be a POE line card.
Step S12, determining the number of enabled ports of the enabling PSE as the number of reserved ports, where an enabled port represents a port for turning on the POE function.
A PSE in a POE switch may have some ports POE functionality and some ports not POE functionality. The port with the POE function may be referred to as an enabled port after the POE function is turned on.
In a possible implementation manner, the POE switch may determine which ports of the PSE need to be enabled according to networking requirements, so as to determine the number of enabled ports, and thus the number of reserved ports.
Step S13, determining the reserved power of the enabling PSE according to the number of reserved ports and the maximum power of the enabling ports.
The maximum power of the enabled port may represent an upper limit of the power that the port can provide to the PD. In one possible implementation, the user may configure the maximum power of the enable port by way of a command line or the like. In the case that the user does not configure the maximum power of the enabled port, the POE switch may reserve a default value as the maximum power of the enabled port.
In one example, the POE switch has 8 POE line cards (i.e. 8 enabling PSEs), each line card has the same model, and supports 48-port POE function (i.e. 48 enabling ports), each port reserves 30 watts of maximum power supply by default, 1440 watts of maximum power supply of each line card, and the total power supply of the POE switch cannot exceed 10000 watts.
In step S11, 8 POE line cards in the POE switch are determined.
In step S12, each POE line card has 20 ports to start the POE function, and the number of reserved ports of each POE line card is 20.
In step S13, the number of reserved ports of each POE line card is 20, the maximum power of the enabled port is 30 watts, and the reserved power of each POE line card is 600 watts — 20 × 30 watts.
Thus, the total reserved power of the entire POE switch is 8 × 600 — 4800 watts, which is smaller than the maximum total power supply power of the POE switch. On one hand, the POE line cards in the POE exchanger can be completely powered on, and the work of adjusting the reserved power of the POE line cards is omitted. On the other hand, the enabling ports of the POE line cards can obtain larger reserved power, and the power supply capacity of the PSE can be improved.
It should be noted that the number of POE line cards, the number of enabled ports per POE line card, and the maximum power per enabled port in the above example are only one example of the disclosure, and do not limit the disclosure in any way. For example, the number of the POE line cards may be selected according to actual requirements, the number of the enabled ports of each POE line card may be the same or different, and the maximum power of each enabled port may be the same or different.
The number of the enabling ports of the enabling PSE is determined as the number of the reserved ports, the maximum power of the enabling ports is determined according to the number of the reserved ports and the maximum power of the enabling ports, the reserved power of the enabling PSE is determined, the power can be reserved for the enabling ports of the enabling PSE according to the power distribution method disclosed by the invention, the power is not reserved for all the ports of the enabling PSE, more refined POE power reservation can be realized, the reservation of the POE power is more reasonable, the adjustment operation of the reserved power is reduced, and the power supply capacity of the PSE is improved.
Fig. 3 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure. As shown in fig. 3, the method further comprises:
step S14, determining the number of active enabled ports of the enabling PSE as the number of reserved ports, where the active enabled ports represent enabled ports with both management state and physical state open.
The states of the ports may include an UP state (active state) and a DOWN state (inactive state). The UP state may indicate that the management state and the physical state of the port are both open, and the DOWN state may indicate that the management state of the port is open, but the physical state is closed. The physical state of the port may be shut down due to lack of physical wiring or a line failure.
When determining the number of reserved ports, the POE switch may determine the number of active enabled ports as the number of reserved ports. It can be understood that an enabled port with both the management state and the physical state being on may provide power to the powered device, and an enabled port with the management state being on but the physical state not being on may not provide power to the powered device. Therefore, the POE switch can reserve power for the active-state enabled port, and does not reserve power for the inactive-state enabled port. Therefore, the normal power supply to the PD is not influenced, and the power of the POE power supply can be saved
Through the management state and the physical state at the enabling port all open the condition, reserve power for this enabling port, according to this disclosed power distribution method for PSE reserve power's mode more meticulous, the management state opens but the power that the enabling port that the physical state closed corresponds can continue to distribute to other enabling PSE's port and use to under the condition of guaranteeing this PSE power supply ability, improve other PSE's in the POE switch power supply ability.
Fig. 4 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure. As shown in fig. 4, the power allocation method includes:
step S15, determining a first reserved total power of the POE switch according to the reserved powers of all enabled PSEs in the POE switch.
Wherein the first reserved total power may represent a reserved total power of all PSEs in the POE switch. In one possible implementation, the sum of the reserved powers of all enabled PSEs in the POE switch may be determined as the first reserved total power of the POE switch.
In one possible implementation, the PSE may be divided into an enabled PSE and a non-enabled PSE according to whether the PSE turns on the POE function. Wherein, enabling the PSE may represent the PSE with the POE function turned on, and disabling the PSE may represent the PSE with the POE function not turned on.
The enabling port of the enabling PSE may supply power to the powered device, and the enabling port of the disabling PSE may not supply power to the powered device. Thus, the first reserved total power of the POE switches is determined by the reserved powers of all enabled PSEs in the POE switches.
Step S16, when the first reserved total power of the POE switch is not greater than the maximum power supply of the POE switch, power is supplied to all enabled ports of the enabling PSE in the POE switch.
The maximum power supply of the POE switch may refer to the maximum power supply available to all PSEs in the POE switch. The maximum power supply of the POE switch can be determined according to the specifications of the POE power supply and protection parameters configured by a user. For example, the maximum power supply of the POE may be a smaller value of the specification of the POE power source and the protection parameter configured by the user. The specification of the POE power source may refer to a fixed maximum output power of the POE power source. The user-configured protection parameter may be power configured to avoid POE power source self-protection. The POE power source has a self-protection mechanism, and if the POE power source is overloaded, the POE power source can adopt self-hardware protection (for example, stopping power supply to all PSEs). Therefore, the protection parameter configured by the user may be smaller than the fixed maximum output power of the POE power source. The above manner of determining the maximum power supply of the POE switch is merely an example, and the present disclosure is not limited in any way, and those skilled in the art may determine the maximum power supply of the POE switch according to other manners.
Under the condition that the first reserved total power of the POE switch is not larger than the maximum power supply power of the POE switch, even if all the enabling ports of the PSE of the POE switch are powered on at the same time, the POE power supply is not overloaded. Thus, all enabled ports of the enabled PSE in the POE switch can be powered.
In a possible implementation manner, the number of reserved ports may be the number of active-state enabled ports of the enabling PSE, and in a case that the first reserved total power of the POE switch is not greater than the maximum power supply of the POE switch, all the active-state enabled ports of the enabling PSE in the POE switch may be powered.
Step S17, when the first reserved total power of the POE switch is greater than the maximum power supply power of the POE switch, power is supplied to an enabling port of the POE switch, where the PSE is enabled, according to the PSE priority.
For example, in a case that the first reserved total power of the POE switch is greater than the maximum power supply power of the POE switch, if all enabled ports of the POE switch enabling the PSE are powered on simultaneously, the POE power supply may be overloaded. Therefore, power can be supplied to the partially enabled ports in the POE switch to reduce the possibility of overloading the POE power supply.
In one possible implementation, the enabling PSE in the POE switch may be powered according to PSE priority. The PSE priority may indicate that the power supply priority is set according to the priority of the PSE, and the enabled port of the PSE with the higher priority is preferentially powered.
In a possible implementation manner, the number of reserved ports may be the number of active-state enabled ports of the enabling PSE, and in a case that the first reserved total power of the POE switch is greater than the maximum power supply of the POE switch, the active-state enabled ports of the enabling PSE in the POE switch may also be powered according to the PSE priority.
Therefore, the power distribution method can provide a reasonable power distribution scheme, dynamically distribute and adjust the reserved power of the PSE, supply power to more enabled ports and reduce the possibility of POE power overload.
Fig. 5 shows a flow diagram of a power allocation method according to an embodiment of the present disclosure. As shown in fig. 5, the power allocation method includes:
step S18, when the enabling PSE is added to the POE switch, determining a second reserved total power of the POE switch.
Wherein the second reserved total power of the POE switch can be used to indicate the reserved total power of the POE switch after the enabling PSE is increased.
In a possible implementation manner, the enabling PSE may be added by starting the original POE function of the PSE in the POE switch, or by newly adding the PSE in the POE switch and starting the POE function of the newly added PSE. The present disclosure does not limit the manner in which the enabling PSE is added.
In step S18, the process of determining the second reserved total power of the POE switch is the same as step S12, step S13, and step S15 in fig. 4, or the same as step S14 in fig. 3 and step S13 and step S15 in fig. 4, and is not described herein again.
And step S19, supplying power to the increased enabled port of the enabled PSE under the condition that the second reserved total power of the POE switch is not more than the maximum power supply power of the POE switch.
For example, when the POE function of the PSE is turned on, if the addition of the PSE does not result in that the second reserved total power of the POE switch is greater than the maximum power supply of the POE switch, the POE function of the PSE may be turned on and power may be supplied to the enabled port of the enabled PSE.
Therefore, when the second reserved total power of the POE switch does not exceed the maximum power supply power of the POE switch, plug and play can be achieved.
Step S20, determining whether to supply power to the enabled port of the increased enabled PSE according to the PSE priority, when the second reserved total power of the POE switch is greater than the maximum power supply of the POE switch.
For example, when the POE function of the PSE is turned on, if the addition of the PSE would cause the second reserved total power of the POE switch to be greater than the maximum power supply of the POE switch, it may be determined whether the PSE turns on the PSE priority policy. The PSE's POE function may not be turned on if the PSE does not turn on the PSE priority policy. If the PSE turns on a PSE priority policy, it may be determined whether to power an enabled port of the enabled PSE based on the PSE priority.
In a possible implementation manner, the third reserved total power of the POE switch may be determined according to the reserved power of the increased enabled PSE in the POE switch, where the priority is greater than the increased enabled PSE, and the third reserved total power of the POE switch may be determined.
Wherein the third reserved total power may represent that all priorities in the POE switch are greater than the reserved total power of the increased enabled PSE of the enabled PSE. The third reserved total power is the same as the second reserved total power in implementation manner, and is not described herein again.
In one possible implementation, in a case that the third reserved total power of the POE switch is not greater than the maximum power supply of the POE switch, the enabled port of the increased enabled PSE may be powered. Not supplying power to the enabled port of the added enabled PSE in case the third reserved total power of the POE switch is greater than the maximum power supply of the POE switch.
Therefore, when the second reserved total power of the POE switch exceeds the maximum power supply power of the POE switch, power can be powered off according to the priority, and the possibility of overload of the POE power supply is reduced.
Fig. 6 shows a block diagram of a power distribution apparatus 30 according to an embodiment of the present disclosure. The apparatus 30 is applied to a POE switch, as shown in fig. 6, the apparatus 30 includes: an enabled device determining module 31, a first number determining module 32 and a reserved power determining module 33.
An enabling device determining module 31, configured to determine an enabling PSE in the POE switch, where the enabling PSE represents a PSE that turns on a POE function.
A first number determining module 32, configured to determine the number of enabled ports of the enabled PSE as the number of reserved ports, where an enabled port represents a port for turning on a POE function.
A reserved power determining module 33, configured to determine the reserved power of the enabled PSE according to the number of reserved ports and the maximum power of the enabled port.
Fig. 7 shows a block diagram of a power distribution apparatus 30 according to an embodiment of the present disclosure. As shown in fig. 7, in one possible implementation, the apparatus 30 further includes a second quantity determining module 34.
A second quantity determining module 34, configured to determine the number of active enabled ports of the enabling PSE as the number of reserved ports, where the active enabled ports represent enabled ports with both management states and physical states being open.
In one possible implementation, the apparatus 30 further includes:
a total reserved power determining module 35, configured to determine a first total reserved power of the POE switch according to reserved powers of all enabled PSEs in the POE switch.
A first power supply module 36, configured to supply power to enabled ports of all enabled PSEs in the POE switch, when the first reserved total power of the POE switch is not greater than the maximum power supply of the POE switch.
A second power supply module 37, configured to supply power to an enabled port of an enabled PSE in the POE switch according to PSE priority when the first reserved total power of the POE switch is greater than the maximum power supply of the POE switch.
In a possible implementation manner, the reserved total power determining module 33 is further configured to determine a second reserved total power of the POE switch when an enabling PSE is added to the POE switch;
the first power supply module 36 is further configured to supply power to an enabled port of an increased enabled PSE when the second reserved total power of the POE switch is not greater than the maximum power supply of the POE switch;
the second power supply module 37 is further configured to determine whether to supply power to the enabled port of the increased enabled PSE according to the PSE priority, when the second reserved total power of the POE switch is greater than the maximum power supply of the POE switch.
In a possible implementation, the second power supply module 37 includes:
a reserved total power determining unit 371, configured to determine a third reserved total power of the POE switch according to a reserved power of the increased enabled PSE in the POE switch, where the priority is greater than the increased enabled PSE;
a power supply unit 372, configured to supply power to an enabled port of the increased enabled PSE if the third reserved total power of the POE switch is not greater than the maximum power supply of the POE switch.
Fig. 8 is a block diagram illustrating a power distribution apparatus 900 according to an example embodiment. Referring to fig. 8, the apparatus 900 may include a processor 901, a machine-readable storage medium 902 having stored thereon machine-executable instructions. The processor 901 and the machine-readable storage medium 902 may communicate via a system bus 903. Also, the processor 901 performs the power allocation method described above by reading machine executable instructions in the machine readable storage medium 902 corresponding to the power allocation processing logic.
The machine-readable storage medium 902 referred to herein may be any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: a RAM (random Access Memory), a volatile Memory, a non-volatile Memory, a flash Memory, a storage drive (e.g., a hard drive), a solid state drive, any type of storage disk (e.g., an optical disk, a dvd, etc.), or similar storage medium, or a combination thereof.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (8)
1. A power distribution method is applied to a Power Over Ethernet (POE) switch, and comprises the following steps:
determining an enabling Power Supply Equipment (PSE) in the POE switch, wherein the enabling PSE represents a PSE for starting a POE function;
determining the number of the working state enabling ports of the enabling PSE as the number of reserved ports, wherein the working state enabling ports represent enabling ports with both a management state and a physical state being opened, and the enabling ports represent ports with a POE function being opened;
and determining the reserved power of the enabling PSE according to the number of the reserved ports and the maximum power of the enabling ports.
2. The method of power allocation according to claim 1, said method comprising:
determining first reserved total power of the POE switch according to the reserved power of all enabled PSEs in the POE switch;
under the condition that the first reserved total power of the POE switch is not larger than the maximum power supply power of the POE switch, supplying power to all enabled ports of an enabled PSE in the POE switch;
and under the condition that the first reserved total power of the POE switch is greater than the maximum power supply power of the POE switch, supplying power to an enabling port of an enabling PSE in the POE switch according to the priority of the PSE.
3. The method of power allocation according to claim 2, wherein said method comprises:
when an enabling PSE is added in the POE switch, determining a second reserved total power of the POE switch;
supplying power to an enabled port of an added enabled PSE in the case that a second reserved total power of the POE switch is not greater than a maximum power supply power of the POE switch;
and determining whether to supply power to the increased enabled port of the enabled PSE according to the PSE priority under the condition that the second reserved total power of the POE switch is greater than the maximum power supply power of the POE switch.
4. The method of claim 3, wherein determining whether to power an enabled port of the increased enabled PSE based on the PSE priority comprises:
determining a third reserved total power of the POE switch according to the reserved power of the enhanced enabled PSE of the enabled PSE in the POE switch, wherein the priority of the enhanced enabled PSE is higher than the priority of the enhanced enabled PSE;
supplying power to an enabling port of the added enabling PSE in case the third reserved total power of the POE switch is not greater than the maximum power supply of the POE switch.
5. A power distribution apparatus, wherein the apparatus is applied to a POE switch, and the apparatus comprises:
an enabling device determining module, configured to determine an enabling PSE in the POE switch, where the enabling PSE indicates a PSE that turns on a POE function;
a second quantity determining module, configured to determine the number of working state enabled ports of the enabling PSE as the number of reserved ports, where the working state enabled ports represent enabled ports with both an open management state and a open physical state, and the enabled ports represent ports with a POE function open;
and the reserved power determining module is used for determining the reserved power of the enabling PSE according to the number of the reserved ports and the maximum power of the enabling ports.
6. The power distribution apparatus of claim 5, wherein the apparatus comprises:
a reserved total power determining module, configured to determine a first reserved total power of the POE switch according to reserved powers of all enabled PSEs in the POE switch;
the first power supply module is used for supplying power to all enabled ports of an enabled PSE (power sourcing equipment) in the POE switch under the condition that the first reserved total power of the POE switch is not greater than the maximum power supply power of the POE switch;
and the second power supply module is used for supplying power to an enabling port of an enabling PSE in the POE switch according to the priority of the enabling PSE under the condition that the first reserved total power of the POE switch is greater than the maximum power supply power of the POE switch.
7. The power distribution apparatus of claim 6, wherein the reserved total power determining module is further configured to determine a second reserved total power of the POE switch when an enabling PSE is added to the POE switch;
the first power supply module is further configured to supply power to an increased enabled port of the enabling PSE when a second reserved total power of the POE switch is not greater than a maximum power supply power of the POE switch;
the second power supply module is further configured to determine whether to supply power to the increased enabled port of the enabling PSE according to the PSE priority when the second reserved total power of the POE switch is greater than the maximum power supply power of the POE switch.
8. The power distribution apparatus of claim 7, wherein the second power supply module comprises:
a reserved total power determining unit, configured to determine a third reserved total power of the POE switch according to a reserved power of the increased enabled PSE of the enabled PSE in the POE switch, where the priority is greater than the increased enabled PSE;
and the power supply unit is used for supplying power to the increased enabled port of the enabled PSE under the condition that the third reserved total power of the POE switch is not greater than the maximum power supply power of the POE switch.
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| CN108494568B (en) * | 2018-04-02 | 2022-02-11 | 新华三技术有限公司 | Power distribution method and device and POE switch |
| CN110957696A (en) * | 2019-12-12 | 2020-04-03 | 太仓市同维电子有限公司 | Method for recovering power supply after power supply overload and power failure of POE (Power over Ethernet) equipment |
| WO2022051921A1 (en) * | 2020-09-09 | 2022-03-17 | 华为技术有限公司 | Network power sourcing system |
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