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| Title | Size | Download |
|---|---|---|
| 04-PoE configuration | 169.92 KB |
Contents
Restrictions: Hardware compatibility with PoE
Restrictions and guidelines: PoE configuration
PoE configuration tasks at a glance
Prerequisites for configuring PoE
Enabling nonstandard PD detection
Configuring the maximum PI power
Configuring the PoE priority policy
Configuring the PI priority policy
Configuring PSE power monitoring
Enabling PoE overtemperature protection
Configuring a PI by using a PoE profile
Hardware and feature compatibility
Upgrading PSE firmware in service
Display and maintenance commands for PoE
Failure to set the priority of a PI to critical
Failure to apply a PoE profile to a PI
Configuring PoE
About PoE
Power over Ethernet (PoE) enables a network device to supply power to terminals over twisted pair cables.
PoE system
As shown in Figure 1, a PoE system includes the following elements:
· PoE power supply—A PoE power supply provides power for the entire PoE system.
· PSE—A power sourcing equipment (PSE) supplies power to PDs. PSE devices are classified into single-PSE devices and multiple-PSE devices.
¡ A single-PSE device has only one PSE firmware.
¡ A multiple-PSE device has multiple PSEs. A multiple-PSE device uses PSE IDs to identify different PSEs. To view the mapping between the ID and slot number of a PSE, execute the display poe device command.
· PI—A power interface (PI) is a PoE-capable Ethernet interface on a PSE.
· PD—A powered device (PD) receives power from a PSE. PDs include IP telephones, APs, portable chargers, POS terminals, and Web cameras. You can also connect a PD to a redundant power source for reliability.
Protocols and standards
· 802.3af-2003, IEEE Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications - Data Terminal Equipment (DTE) Power Via Media Dependent Interface (MDI)
· 802.3at-2009, IEEE Standard for Information technology-- Local and metropolitan area networks-- Specific requirements-- Part 3: CSMA/CD Access Method and Physical Layer Specifications Amendment 3: Data Terminal Equipment (DTE) Power via the Media Dependent Interface (MDI) Enhancements
Restrictions: Hardware compatibility with PoE
|
Hardware series |
Model |
Product code |
PoE compatibility |
|
WX1800H series |
WX1804H |
EWP-WX1804H-PWR-CN |
Yes |
|
WX2500H series |
WX2508H-PWR-LTE WX2510H WX2510H-F WX2540H WX2540H-F WX2560H |
EWP-WX2508H-PWR-LTE EWP-WX2510H-PWR EWP-WX2510H-F-PWR EWP-WX2540H EWP-WX2540H-F EWP-WX2560H |
Yes: · WX2508H-PWR-LTE · WX2510H · WX2510H-F No: · WX2540H · WX2540H-F · WX2560H |
|
WX3000H series |
WX3010H WX3010H-X WX3010H-L WX3024H WX3024H-L WX3024H-F |
EWP-WX3010H EWP-WX3010H-X-PWR EWP-WX3010H-L-PWR EWP-WX3024H EWP-WX3024H-L-PWR EWP-WX3024H-F |
Yes |
|
WX3500H series |
WX3508H WX3510H WX3520H WX3520H-F WX3540H |
EWP-WX3508H EWP-WX3510H EWP-WX3520H EWP-WX3520H-F EWP-WX3540H |
No |
|
WX5500E series |
WX5510E WX5540E |
EWP-WX5510E EWP-WX5540E |
No |
|
WX5500H series |
WX5540H WX5560H WX5580H |
EWP-WX5540H EWP-WX5560H EWP-WX5580H |
No |
|
Access controller modules |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
No |
|
Hardware series |
Model |
Product code |
PoE compatibility |
|
WX1800H series |
WX1804H WX1810H WX1820H WX1840H |
EWP-WX1804H-PWR EWP-WX1810H-PWR EWP-WX1820H EWP-WX1840H-GL |
Yes: · WX1804H · WX1810H No: · WX1820H · WX1840H |
|
WX3800H series |
WX3820H WX3840H |
EWP-WX3820H-GL EWP-WX3840H-GL |
No |
|
WX5800H series |
WX5860H |
EWP-WX5860H-GL |
No |
Restrictions and guidelines: PoE configuration
You can configure a PI through either of the following ways:
· Configure the settings directly on the PI.
· Configure a PoE profile and apply it to the PI. If you apply a PoE profile to multiple PIs, these PIs have the same PoE features. If you connect a PD to another PI, you can apply the PoE profile of the original PI to the new PI. This method relieves the task of configuring PoE on the new PI.
You can only use one way to configure a parameter for a PI. To use the other way to reconfigure a parameter, you must first remove the original configuration.
You must use the same configuration method for the poe max-power max-power and poe priority { critical | high | low } commands.
PoE configuration tasks at a glance
To configure PoE, perform the following tasks:
2. (Optional.) Enabling nonstandard PD detection
3. (Optional.) Configuring the maximum PI power
4. (Optional.) Configuring the PI priority policy
5. (Optional.) Configuring PoE monitoring
¡ Configuring PSE power monitoring
¡ Enabling PoE overtemperature protection
6. (Optional.) Upgrading PSE firmware in service
To use a PoE profile to enable PoE and configure the priority and maximum power for a PI, see "Configuring a PI by using a PoE profile."
Prerequisites for configuring PoE
Before you configure PoE, make sure the PoE power supply and PSEs are operating correctly.
Enabling PoE
Enabling PoE for a PI
About this task
After you enable PoE for a PI, the system reserves and supplies power to the PD connected to the PI.
Follow these guidelines to determine whether you can enable PoE for a PI:
· You can enable PoE for a PI if the PI will not result in PSE power overload. PSE overload occurs when the sum of the power consumption of all PIs exceeds the maximum power of the PSE.
· If the PI will result in PSE power overload, you can enable PoE for the PI only when the PoE priority policy is enabled on the PI. For more information about the PI priority policy, see "Configuring the PI priority policy."
Power can be transmitted over a twisted pair cable in either of the following modes:
· Signal pair mode—Signal pairs 1, 2, 3, and 6 of the twisted pair cable are used for power transmission.
· Spare pair mode—Spare pairs 4, 5, 7, and 8 of the twisted pair cable are used for power transmission.
Restrictions and guidelines
Only the WX2508H-PWR-LTE supports power transmission over spare pairs.
A PI can supply power to a PD only when the PI and PD use the same power transmission mode. If the PI and PD use different power transmission modes, a reconnection is required.
Procedure
1. Enter system view.
system-view
2. Enter PI view.
interface interface-type interface-number
3. Enable PoE for the PI.
poe enable
By default, PoE is disabled on a PI.
4. (Optional.) Configure a description for the PD connected to the PI.
poe pd-description text
By default, no description is configured for the PD connected to the PI.
Configuring PD detection
Enabling nonstandard PD detection
About this task
PDs are classified into standard PDs and nonstandard PDs. Standard PDs are compliant with IEEE 802.3af and IEEE 802.3at. A PSE supplies power to a nonstandard PD only after nonstandard PD detection is enabled.
Procedure
1. Enter system view.
system-view
2. Enable nonstandard PD detection.
poe legacy enable
By default, nonstandard PD detection is disabled for a PSE.
Configuring the PoE power
Configuring the maximum PI power
About this task
The maximum PI power is the maximum power that a PI can provide to the connected PD. If the PD requires more power than the maximum PI power, the PI does not supply power to the PD.
Hardware and feature compatibility
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H |
EWP-WX1804H-PWR-CN |
No |
|
WX2500H series |
WX2508H-PWR-LTE WX2510H WX2510H-F WX2540H WX2540H-F WX2560H |
EWP-WX2508H-PWR-LTE EWP-WX2510H-PWR EWP-WX2510H-F-PWR EWP-WX2540H EWP-WX2540H-F EWP-WX2560H |
Yes: · WX2508H-PWR-LTE · WX2510H · WX2510H-F No: · WX2540H · WX2540H-F · WX2560H |
|
WX3000H series |
WX3010H WX3010H-X WX3010H-L WX3024H WX3024H-L WX3024H-F |
EWP-WX3010H EWP-WX3010H-X-PWR EWP-WX3010H-L-PWR EWP-WX3024H EWP-WX3024H-L-PWR EWP-WX3024H-F |
Yes |
|
WX3500H series |
WX3508H WX3510H WX3520H WX3520H-F WX3540H |
EWP-WX3508H EWP-WX3510H EWP-WX3520H EWP-WX3520H-F EWP-WX3540H |
No |
|
WX5500E series |
WX5510E WX5540E |
EWP-WX5510E EWP-WX5540E |
No |
|
WX5500H series |
WX5540H WX5560H WX5580H |
EWP-WX5540H EWP-WX5560H EWP-WX5580H |
No |
|
Access controller modules |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
No |
|
Hardware series |
Model |
Product code |
PoE compatibility |
|
WX1800H series |
WX1804H WX1810H WX1820H WX1840H |
EWP-WX1804H-PWR EWP-WX1810H-PWR EWP-WX1820H EWP-WX1840H-GL |
Yes: WX1810H No: · WX1804H · WX1820H · WX1840H |
|
WX3800H series |
WX3820H WX3840H |
EWP-WX3820H-GL EWP-WX3840H-GL |
No |
|
WX5800H series |
WX5860H |
EWP-WX5860H-GL |
No |
Procedure
1. Enter system view.
system-view
2. Enter PI view.
interface interface-type interface-number
3. Configure the maximum power for the PI.
poe max-power max-power
The default setting depends on the device model. For more information, see the command reference for the device.
Configuring the PoE priority policy
Configuring the PI priority policy
About this task
The PI priority policy enables the PSE to perform priority-based power allocation to PIs when PSE power overload occurs. The priority levels for PIs are critical, high, and low in descending order.
When PSE power overload occurs, the PSE supplies power to PDs as follows:
· If the PI priority policy is disabled, the PSE does not supply power to a newly-added or existing PD that causes PSE power overload.
· If the PI priority policy is enabled, the PSE supplies power to PDs as follows:
¡ If a PD being powered causes PSE power overload, the PSE stops supplying power to the PD.
¡ If a newly-added PD causes PSE power overload, the PSE supplies power to PDs in priority descending order of the PIs to which they are connected.
¡ If the newly-added PD and a PD being powered have the same priority, the PD being powered takes precedence.
¡ If multiple PIs being powered have the same priority, the PIs with smaller IDs takes precedence.
Hardware and feature compatibility
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H |
EWP-WX1804H-PWR-CN |
No |
|
WX2500H series |
WX2508H-PWR-LTE WX2510H WX2510H-F WX2540H WX2540H-F WX2560H |
EWP-WX2508H-PWR-LTE EWP-WX2510H-PWR EWP-WX2510H-F-PWR EWP-WX2540H EWP-WX2540H-F EWP-WX2560H |
No |
|
WX3000H series |
WX3010H WX3010H-X WX3010H-L WX3024H WX3024H-L WX3024H-F |
EWP-WX3010H EWP-WX3010H-X-PWR EWP-WX3010H-L-PWR EWP-WX3024H EWP-WX3024H-L-PWR EWP-WX3024H-F |
Yes |
|
WX3500H series |
WX3508H WX3510H WX3520H WX3520H-F WX3540H |
EWP-WX3508H EWP-WX3510H EWP-WX3520H EWP-WX3520H-F EWP-WX3540H |
No |
|
WX5500E series |
WX5510E WX5540E |
EWP-WX5510E EWP-WX5540E |
No |
|
WX5500H series |
WX5540H WX5560H WX5580H |
EWP-WX5540H EWP-WX5560H EWP-WX5580H |
No |
|
Access controller modules |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
No |
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H WX1810H WX1820H WX1840H |
EWP-WX1804H-PWR EWP-WX1810H-PWR EWP-WX1820H EWP-WX1840H-GL |
Yes: WX1810H No: · WX1804H · WX1820H · WX1840H |
|
WX3800H series |
WX3820H WX3840H |
EWP-WX3820H-GL EWP-WX3840H-GL |
No |
|
WX5800H series |
WX5860H |
EWP-WX5860H-GL |
No |
Restrictions and guidelines
Before you configure a PI with critical priority, make sure the remaining power from the maximum PSE power minus the maximum powers of the existing PIs with critical priority is greater than maximum power of the PI.
Configuration for a PI whose power is preempted remains unchanged.
Procedure
1. Enter system view.
system-view
2. Enable the PI priority policy.
poe pd-policy priority
By default, the PI priority policy is disabled.
3. Enter PI view.
interface interface-type interface-number
4. (Optional.) Configure a priority for the PI.
poe priority { critical | high | low }
By default, the priority for a PI is low.
Configuring PoE monitoring
Configuring PSE power monitoring
About this task
The system monitors PSE power utilization and sends notification messages when PSE power utilization exceeds or drops below the threshold. If PSE power utilization crosses the threshold multiple times in succession, the system sends notification messages only for the first crossing. For more information about the notification message, see "Configuring SNMP."
Procedure
1. Enter system view.
system-view
2. Configure a power alarm threshold for a PSE.
poe utilization-threshold value
By default, the power alarm threshold for a PSE is 80%.
Enabling PoE overtemperature protection
About this task
The PoE overtemperature protection enables the system to monitor the chassis internal temperature in real time. When the temperature exceeds the upper limit, the system disables PoE for all PIs. When the temperature drops below the lower limit, the system re-enables PoE on all PIs. The upper and lower temperature limits depend on hardware specifications and are not configurable at the CLI.
When a PSE starts or stops supplying power to a PD, the system generates and sends a notification to the SNMP module. For more information about the notification, see "Configuring SNMP."
Hardware and feature compatibility
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H |
EWP-WX1804H-PWR-CN |
No |
|
WX2500H series |
WX2508H-PWR-LTE WX2510H WX2510H-F WX2540H WX2540H-F WX2560H |
EWP-WX2508H-PWR-LTE EWP-WX2510H-PWR EWP-WX2510H-F-PWR EWP-WX2540H EWP-WX2540H-F EWP-WX2560H |
No |
|
WX3000H series |
WX3010H WX3010H-X WX3010H-L WX3024H WX3024H-L WX3024H-F |
EWP-WX3010H EWP-WX3010H-X-PWR EWP-WX3010H-L-PWR EWP-WX3024H EWP-WX3024H-L-PWR EWP-WX3024H-F |
Yes |
|
WX3500H series |
WX3508H WX3510H WX3520H WX3520H-F WX3540H |
EWP-WX3508H EWP-WX3510H EWP-WX3520H EWP-WX3520H-F EWP-WX3540H |
No |
|
WX5500E series |
WX5510E WX5540E |
EWP-WX5510E EWP-WX5540E |
No |
|
WX5500H series |
WX5540H WX5560H WX5580H |
EWP-WX5540H EWP-WX5560H EWP-WX5580H |
No |
|
Access controller modules |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
No |
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H WX1810H WX1820H WX1840H |
EWP-WX1804H-PWR EWP-WX1810H-PWR EWP-WX1820H EWP-WX1840H-GL |
No |
|
WX3800H series |
WX3820H WX3840H |
EWP-WX3820H-GL EWP-WX3840H-GL |
No |
|
WX5800H series |
WX5860H |
EWP-WX5860H-GL |
No |
Procedure
1. Enter system view.
system-view
2. Enable PoE overtemperature protection.
poe temperature-protection enable
By default, PoE over-temperature protection is enabled.
Configuring a PI by using a PoE profile
Hardware and feature compatibility
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H |
EWP-WX1804H-PWR-CN |
No |
|
WX2500H series |
WX2508H-PWR-LTE WX2510H WX2510H-F WX2540H WX2540H-F WX2560H |
EWP-WX2508H-PWR-LTE EWP-WX2510H-PWR EWP-WX2510H-F-PWR EWP-WX2540H EWP-WX2540H-F EWP-WX2560H |
Yes: · WX2508H-PWR-LTE · WX2510H · WX2510H-F No: · WX2540H · WX2540H-F · WX2560H |
|
WX3000H series |
WX3010H WX3010H-X WX3010H-L WX3024H WX3024H-L WX3024H-F |
EWP-WX3010H EWP-WX3010H-X-PWR EWP-WX3010H-L-PWR EWP-WX3024H EWP-WX3024H-L-PWR EWP-WX3024H-F |
Yes |
|
WX3500H series |
WX3508H WX3510H WX3520H WX3520H-F WX3540H |
EWP-WX3508H EWP-WX3510H EWP-WX3520H EWP-WX3520H-F EWP-WX3540H |
No |
|
WX5500E series |
WX5510E WX5540E |
EWP-WX5510E EWP-WX5540E |
No |
|
WX5500H series |
WX5540H WX5560H WX5580H |
EWP-WX5540H EWP-WX5560H EWP-WX5580H |
No |
|
Access controller modules |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
No |
|
Hardware series |
Model |
Prodcut code |
PoE compatibility |
|
WX1800H series |
WX1804H WX1810H WX1820H WX1840H |
EWP-WX1804H-PWR EWP-WX1810H-PWR EWP-WX1820H EWP-WX1840H-GL |
Yes: WX1810H No: · WX1804H · WX1820H · WX1840H |
|
WX3800H series |
WX3820H WX3840H |
EWP-WX3820H-GL EWP-WX3840H-GL |
No |
|
WX5800H series |
WX5860H |
EWP-WX5860H-GL |
No |
Restrictions and guidelines
To modify a PoE profile applied on a PI, first remove the PoE profile from the PI.
You can configure a PI either on the PI or by using a PoE profile. The poe max-power max-power and poe priority { critical | high | low } commands must be configured using the same method.
Configuring a PoE profile
1. Enter system view.
system-view
2. Create a PoE profile and enter its view.
poe-profile profile-name [ index ]
By default, no PoE profiles exist.
3. Enable PoE.
poe enable
By default, PoE is disabled.
4. (Optional.) Configure the maximum PI power.
poe max-power max-power
The default setting depends on the device model. For more information, see the command reference for the device.
5. (Optional.) Configure a PI priority.
poe priority { critical | high | low }
The default priority is low.
This command takes effect only after the PI priority policy is enabled.
Support for this command depends on the device model. For more information, see the command reference for the device.
Applying a PoE profile
Restrictions and guidelines
You can apply a PoE profile to multiple PIs in system view or a single PI in PI view. If you perform the operation in both views for the same PI, the most recent operation takes effect.
You can apply only one PoE profile to a PI.
Applying a PoE profile in system view
1. Enter system view.
system-view
2. Apply a PoE profile to PIs.
apply poe-profile { index index | name profile-name } interface interface-range
By default, a PoE profile is not applied to a PI.
Applying a PoE profile in PI view
1. Enter system view.
system-view
2. Enter PI view.
interface interface-type interface-number
3. Apply the PoE profile to the interface.
apply poe-profile { index index | name profile-name }
By default, a PoE profile is not applied to a PI.
Upgrading PSE firmware in service
About this task
You can upgrade the PSE firmware in service in the following modes:
· Refresh mode—Updates the PSE firmware without deleting it. You can use the refresh mode in most cases.
· Full mode—Deletes the current PSE firmware and reloads a new one. Use the full mode if the PSE firmware is damaged and you cannot execute any PoE commands.
Hardware and feature compatibility
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H |
EWP-WX1804H-PWR-CN |
No |
|
WX2500H series |
WX2508H-PWR-LTE WX2510H WX2510H-F WX2540H WX2540H-F WX2560H |
EWP-WX2508H-PWR-LTE EWP-WX2510H-PWR EWP-WX2510H-F-PWR EWP-WX2540H EWP-WX2540H-F EWP-WX2560H |
No |
|
WX3000H series |
WX3010H WX3010H-X WX3010H-L WX3024H WX3024H-L WX3024H-F |
EWP-WX3010H EWP-WX3010H-X-PWR EWP-WX3010H-L-PWR EWP-WX3024H EWP-WX3024H-L-PWR EWP-WX3024H-F |
Yes |
|
WX3500H series |
WX3508H WX3510H WX3520H WX3520H-F WX3540H |
EWP-WX3508H EWP-WX3510H EWP-WX3520H EWP-WX3520H-F EWP-WX3540H |
No |
|
WX5500E series |
WX5510E WX5540E |
EWP-WX5510E EWP-WX5540E |
No |
|
WX5500H series |
WX5540H WX5560H WX5580H |
EWP-WX5540H EWP-WX5560H EWP-WX5580H |
No |
|
Access controller modules |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
No |
|
Hardware series |
Model |
Product code |
Feature compatibility |
|
WX1800H series |
WX1804H WX1810H WX1820H WX1840H |
EWP-WX1804H-PWR EWP-WX1810H-PWR EWP-WX1820H EWP-WX1840H-GL |
No |
|
WX3800H series |
WX3820H WX3840H |
EWP-WX3820H-GL EWP-WX3840H-GL |
No |
|
WX5800H series |
WX5860H |
EWP-WX5860H-GL |
No |
Restrictions and guidelines
If the PSE firmware upgrade fails because of interruption such as a device reboot, you can restart the device and upgrade it in full mode again. After the upgrade, restart the device manually for the new PSE firmware to take effect.
Procedure
1. Enter system view.
system-view
2. Upgrade the PSE firmware in service.
poe update { full | refresh } filename
Display and maintenance commands for PoE
Execute display commands in any view.
|
Task |
Command |
|
Display general PSE information. |
display poe device |
|
Display the power supplying information for the specified PI. |
display poe interface [ interface-type interface-number ] |
|
Display power information for PIs. |
display poe interface power [ interface-type interface-number ] |
|
Display detailed PSE information. |
display poe pse |
|
Display all information about the PoE profile. |
display poe-profile [ index index | name profile-name ] |
|
Display all information about the PoE profile applied to the specified PI. |
display poe-profile interface interface-type interface-number |
PoE configuration examples
Example: Configuring PoE
Network configuration
As shown in Figure 2, the AC acts as a PSE.
· Enable the AC to supply PoE power to the IP phone and APs.
· Enable the AC to supply PoE power to the IP phone first when overload occurs.
Configuration procedure
# Enable PoE on GigabitEthernet 1/0/1, GigabitEthernet 1/0/2, GigabitEthernet 1/0/3, and GigabitEthernet 1/0/4. Set the power supply priority to critical for GigabitEthernet 1/0/1. Set the maximum PI power to 9000 milliwatts on GigabitEthernet 1/0/4.
<PSE> system-view
[PSE] interface gigabitethernet 1/0/1
[PSE-GigabitEthernet1/0/1] poe enable
[PSE-GigabitEthernet1/0/1] poe priority critical
[PSE-GigabitEthernet1/0/1] quit
[PSE] interface gigabitethernet 1/0/2
[PSE-GigabitEthernet1/0/2] poe enable
[PSE-GigabitEthernet1/0/2] quit
[PSE] interface gigabitethernet 1/0/3
[PSE-GigabitEthernet1/0/3] poe enable
[PSE-GigabitEthernet1/0/3] quit
[PSE] interface gigabitethernet 1/0/4
[PSE-GigabitEthernet1/0/4] poe enable
[PSE-GigabitEthernet1/0/4] poe max-power 9000
[PSE-GigabitEthernet1/0/4] quit
Verifying the configuration
# Verify that the IP telephone and APs obtain PoE power and operate correctly.
Troubleshooting PoE
Failure to set the priority of a PI to critical
Symptom
Power supply priority configuration for a PI failed.
Solution
To resolve the issue:
1. Identify whether the remaining guaranteed power of the PSE is lower than the maximum power of the PI. If it is, reduce the maximum power of the PI.
2. Identify whether the priority has been configured through other methods. If the priority has been configured, remove the configuration.
3. If the issue persists, contact H3C Support.
Failure to apply a PoE profile to a PI
Symptom
PoE profile application for a PI failed.
Solution
To resolve the issue:
1. Identify whether some settings in the PoE profile have been configured. If they have been configured, remove the configuration.
2. Identify whether the settings in the PoE profile meet the requirements of the PI. If they do not, modify the settings in the PoE profile.
3. Identify whether another PoE profile is already applied to the PI. If it is, remove the application.
4. If the issue persists, contact H3C Support.
