Power over Ethernet (PoE) uses 10Base-T, 100Base-TX, and 1000Base-T twisted pairs to supply power to the remote powered devices (PD) in the network and implement power supply and data transmission simultaneously.

I. Advantages of PoE

l Reliability: The centralized power supply provides backup convenience, unified management, and safety.

l Easy connection: Network terminals only require an Ethernet cable, but no external power supply.

l Standard: PoE conforms to the 802.3af standard and uses a globally uniform power interfaces;

l Bright application prospect: PoE can be applied to IP phones, wireless access points (APs), chargers for portable devices, card readers, cameras, and data collection.

II. PoE components

l Power sourcing equipment (PSE): PSE is comprised of the power and the PSE functional module. It can implement PD detection, PD power information collection, PoE, power supply monitoring, and power-off for devices.

l Powered device (PD): PDs receive power from the PSE. PDs include standard PDs and nonstandard PDs. Standard PDs conform to the 802.3af standard, including IP phones, WLAN APs, network cameras and so on.

l Power interface (PI): PIs are RJ45 interfaces which connect PSE/PDs to network cables.

1.1.2 PoE Features Supported by S3600

PoE-enabled S3600 series Ethernet switches include:

l S3600-28P-PWR-SI

l S3600-28P-PWR-EI

l S3600-52P-PWR-EI

l S3600-52P-PWR-SI

A PoE-enabled S3600 switch has the following features:

l As the PSE, it supports the IEEE802.3af standard. It can also supply power to some PDs that do not support the 802.3af standard.

l It can deliver data and current simultaneously through data wires (1, 3, 2, and 6) of category-3/5 twisted pairs.

l Through the fixed 24/48 Ethernet electrical ports, it can supply power to up to 24/48 remote Ethernet switches with a maximum distance of 100 m (328 feet).

l Each Ethernet port can supply at most a power of 15,400 mW to a PD.

l When AC power input is adopted for the switch, the maximum total power that can be provided is 300 W. It can determine whether to supply power to the next remote PD it detects depending on its available power.

l When DC power input is adopted for the switch: it is capable of supplying full power to all of the 24/48 ports, that is, 15,400 mW for each port, and the total power is 369.6/739.2 W.

l The PSE processing software on the switch can be upgraded online.

l The switch provides statistics about power supplying on each port and the whole equipment, which you can query through the display command.

l The switch provides two modes (auto and manual) to manage the power feeding to ports in the case of PSE power overload.

l The switch provides over-temperature protection mechanism. Using this mechanism, the switch disables the PoE feature on all ports when its internal temperature exceeds 65 ⁰C (149 ⁰F) for self-protection, and restores the PoE feature on all its ports when the temperature drops below 60 ⁰C (140 ⁰F).

l The switch supports the PoE profile feature, that is, different PoE policies can be set for different user groups. These PoE policies are each saved in the corresponding PoE profile and applied to ports of the user groups.

& Note:

l When using the PoE-enabled S3600 switch to supply power, the PDs need not have any external power supply.

l If a remote PD has an external power supply, the PoE-enabled S3600 switch and the external power supply will be redundant with each other for the PD.

l Only the electrical ports of the PoE-enabled S3600 switch support the PoE feature.

1.2 PoE Configuration Tasks

Table 1-1 PoE configuration tasks

Operation	Description	Related section
Enable the PoE feature on a port	Required	Section 1.3 “Enabling the PoE Feature on a Port”
Set the maximum output power on a port	Optional	Section 1.4 “Setting the Maximum Output Power on a Port”
Set PoE management mode and PoE priority of a port	Optional	Section 1.5 “Setting PoE Management Mode and PoE Priority of a Port”
Set the PoE mode on a port	Optional	Section 1.6 “Setting the PoE Mode on a Port“
Configure the PD compatibility detection feature	Optional	Section 1.7 “Configuring the PD Compatibility Detection Feature”
Configure PoE over-temperature protection on the switch	Optional	Section 1.8 “Configuring PoE Over-Temperature Protection on the Switch”
Upgrade the PSE processing software online	Optional	Section 1.9 “Upgrading the PSE Processing Software Online”

1.3 Enabling the PoE Feature on a Port

Table 1-2 Enable the PoE feature on a port

Operation	Command	Description
Enter system view	system-view	—
Enter Ethernet port view	interface interface-type interface-number	—
Enable the PoE feature on the port	poe enable	Required By default, the PoE function on a port is enabled by the default configuration file when the device is delivered

Caution:

By default, the PoE function on a port is enabled by the default configuration file when the device is delivered.

If you delete the default configuration file without specifying another one, the PoE function on a port will be disabled after you restart the device..

1.4 Setting the Maximum Output Power on a Port

The maximum power that can be supplied by a PoE-enabled S3600 switch to its PD is 15,400 mW. In practice, you can set the maximum power on a port depending on the actual power of the PD, in the range of 1,000 to 15,400 mW and in the granularity of 100 mW.

Table 1-3 Set the maximum output power on a port

Operation	Command	Description
Enter system view	system-view	—
Enter Ethernet port view	interface interface-type interface-number	—
Set the maximum output power on the port	poe max-power max-power	Required By default, the maximum output power on a port is 15,400 mW

1.5 Setting PoE Management Mode and PoE Priority of a Port

The power supply management mode and the port priority settings will work together to control the power feeding of the switch when the switch PoE is close to its full power load.

When AC power input is adopted for the switch, the maximum total power that can be supplied by the PoE-enabled S3600 switch is 300 W. By default, when the switch PoE reaches its full load in supplying power, it will manage the power supply to its ports in auto mode.

l auto mode: When the switch is close to its full load in supplying power, it will first supply power to the PDs that are connected to the ports with critical priority, and then supply power to the PDs that are connected to the ports with high priority. For example: Port A has the priority of critical. When the switch PoE is close to its full load and a new PD is now added to port A, the switch will power down the PD connected to the port with the lowest priority and turn to supply power to this new PD. IF more than one port has the same lowest priority, the switch will power down the PD connected to the port with larger logical port number.

l manual mode: When the switch is close to its full load in supplying power, it will not make change to its original power supply status based on its priority when a new PD is added. For example: Port A has the priority critical. When the switch PoE is close to its full load and a new PD is now added to port A, the switch just gives a prompt that a new PD is added and will not supply power to this new PD.

After the PoE feature is enabled on the port, perform the following configuration to set the PoE management mode and PoE priority of a port.

Table 1-4 Set the PoE management mode and PoE priority of a port

Operation	Command	Description
Enter system view	system-view	—
Set the PoE management mode for the switch	poe power-management { auto \| manual }	Required By default, the PoE management mode is auto
Enter Ethernet port view	interface interface-type interface-number	—
Se the PoE priority of a port	poe priority { critical \| high \| low }	Required By default, the PoE priority of a port is low

1.6 Setting the PoE Mode on a Port

After the PoE feature is enabled on the port, perform the following configuration to set the PoE mode on a port.

Table 1-5 Set the PoE mode on a port

Operation	Command	Description
Enter system view	system-view	—
Enter Ethernet port view	interface interface-type interface-number	—
Set the PoE mode on the port	poe mode { signal \| spare }	Required S3600 series Ethernet switches do not support PoE in the spare mode currently

1.7 Configuring the PD Compatibility Detection Feature

After the PD compatibility detection feature is enabled, the switch can supply power to the detected PDs that do not conform to the 802.3af standard.

After the PoE feature is enabled, perform the following configuration to enable the PD compatibility detection feature.

Table 1-6 Configure the PD compatibility detection feature

Operation	Command	Description
Enter system view	system-view	—
Enable the PD compatibility detection function	poe legacy enable	Required By default, the PD compatibility detection feature is disabled

Operation

Command

Description

Enter system view

system-view

—

Enable the PD compatibility detection function

poe legacy enable

Required

By default, the PD compatibility detection feature is disabled

1.8 Configuring PoE Over-Temperature Protection on the Switch

If this function is enabled, the switch disables the PoE feature on all ports when its internal temperature exceeds 65 ⁰C (149 ⁰F) for self-protection, and restores the PoE feature settings on all its ports when the temperature drops below 60 ⁰C (140 ⁰F).

Table 1-7 Configure PoE over-temperature protection on the switch

Operation	Command	Description
Enter system view	system-view	—
Enable the PoE over-temperature protection feature on the switch	poe temperature-protection enable	Required By default, the PoE over-temperature protection feature is enabled on the switch

Operation

Command

Description

Enter system view

system-view

—

Enable the PoE over-temperature protection feature on the switch

poe temperature-protection enable

Required

By default, the PoE over-temperature protection feature is enabled on the switch

& Note:

l When the internal temperature of the switch decreases to 65⁰C (149⁰F) below, but 60⁰C (140⁰F) above, the switch still disables the PoE feature on all the ports.

l When the internal temperature of the switch increases to 60 ⁰C (140 ⁰F) above, but 65⁰C (149⁰F) below, the switch still enables the PoE feature on all the ports.

1.9 Upgrading the PSE Processing Software Online

The online upgrading of PSE processing software can update the processing software or repair the software if it is damaged. After downloading the PSE processing software to the Flash of the switch, you can perform the following configuration. Refer to “File System Management” for how to download the PSE processing software.

Table 1-8 Upgrade PSE processing software online

Operation	Command	Description
Enter system view	system-view	—
Upgrade the PSE processing software online	poe update { refresh \| full } filename	Required

& Note:

l The refresh update mode is to upgrade the valid software in the PSE through refreshing the software, while the full update mode is to delete the invalid software in PSE completely and then reload the software.

l Generally, the refresh update mode is used to upgrade the PSE processing software.

l When the PSE processing software is damaged (that is, all the PoE commands cannot be successfully executed), you can use the full update mode to upgrade and restore the software.

l When the online upgrading procedure is interrupted for some unexpected reason (for example, the device restarts due to some errors), if the upgrade in full mode fails after restart, you must upgrade in full mode after power-off and restart of the device, and then restart the device manually. In this way, the former PoE configuration is restored.

1.10 Displaying PoE Configuration

After the above configuration, execute the display command in any view to see the operation of the PoE feature and verify the effect of the configuration.

Table 1-9 Display PoE information

Operation	Command	Description
Display the PoE status of a specific port or all ports of the switch	display poe interface [ interface-type interface-number ]	You can execute the display command in any view
Display the PoE power information of a specific port or all ports of the switch	display poe interface power [ interface-type interface-number ]
Display the PSE parameters	display poe powersupply
Display the enabled/disabled status of the PoE over-temperature protection feature on the switch	display poe temperature-protection

1.11 PoE Configuration Example

I. Networking requirements

l The Ethernet 1/0/1 and Ethernet 1/0/2 ports of the S3600-28P-PWR-EI switch are connected to an S2016C switch and an AP respectively; the Ethernet 1/0/24 port is intended to be connected with an important AP.

l The PSE processing software of the S3600-28P-PWR-EI switch is first upgraded online. The remotely accessed PDs are powered by the S3600-28P-PWR-EI switch.

l The power consumption of the accessed AP is 2,500 mW, and the power consumption of the S2016C switch is 12,000 mW.

l It is required to guarantee the power feeding to the PDs connected to the Ethernet1/0/24 port even when the S3600-28P-PWR-EI switch is under full load.

II. Networking diagram

Figure 1-1 Network diagram for PoE

III. Configuration procedure

# Upgrade the PSE processing software online.

<H3C> system-view

[H3C] poe update refresh 0290_021.s19

# Enable the PoE feature on Ethernet 1/0/1, Ethernet 1/0/2, and Ethernet 1/0/24.

[H3C] interface Ethernet 1/0/1

[H3C-Ethernet1/0/1] poe enable

[H3C-Ethernet1/0/1] quit

[H3C]interface Ethernet 1/0/2

[H3C-Ethernet1/0/2] poe enable

[H3C-Ethernet1/0/2] quit

[H3C] interface Ethernet 1/0/24

[H3C-Ethernet1/0/24] poe enable

[H3C-Ethernet1/0/24] quit

# Set the maximum output power of Ethernet 1/0/1 and Ethernet 1/0/2 to 12,000 mW and 2,500 mW respectively.

[H3C] interface Ethernet 1/0/1

[H3C-Ethernet1/0/1] poe max-power 12000

[H3C-Ethernet1/0/1] interface Ethernet 1/0/2

[H3C-Ethernet1/0/2] poe max-power 2500

[H3C-Ethernet1/0/2] quit

# Set the PoE priority of Ethernet 1/0/24 to critical to guarantee the power feeding to the AP to which this port connects.

[H3C] interface Ethernet 1/0/24

[H3C-Ethernet1/0/24] poe priority critical

[H3C-Ethernet1/0/24] quit

# Set the power supply management mode on the switch to auto (it is the default mode, so this step can be ignored).

[H3C] poe power-management auto

# Enable the PD compatibility detect of the switch to allow the switch to supply power to part of the devices noncompliant with the 802.3af standard.

[H3C] poe legacy enable

Chapter 2 PoE Profile Configuration

2.1 Introduction to PoE Profile

On a large-sized network or a network with mobile users, to help network administrators to monitor the PoE features of the switch, S3600 series Ethernet switches provide the PoE profile features.

Features of PoE profile:

l Various PoE profiles can be created. PoE policy configurations applicable to different user groups are stored in the corresponding PoE profiles. These PoE profiles can be applied to the ports used by the corresponding user groups.

l When users connect a PD to a PoE-profile-enabled port, the PoE configurations in the PoE profile will be enabled on the port.

2.2 PoE Profile Configuration Tasks

Table 2-1 Configure PoE profile

Operation			Command	Description
Enter system view			system-view	—
Create a PoE profile			poe-profile profilename	Required Enter PoE profile view while creating the PoE profile
Configure the relevant features in PoE profile	Enable the PoE feature on a port		poe enable	Required The PoE feature on a port is disabled by default
	Configure PoE mode for Ethernet ports		poe mode { signal \| spare }	Optional By default, PoE mode is set to be signal
	Configure the PoE priority for Ethernet ports		poe priority { critical \| high \| low }	Optional By default, PoE priority is set to low
	Configure the maximum power for Ethernet ports		poe max-power max-power	Optional By default, maximum power is set to be 15,400 mW
Quit system view			quit	—
Apply the existing PoE profile to the specified Ethernet port	In system view		apply poe-profile profile-name interface interface-type interface-number [ to interface-type interface-number ]	Required Users can decide whether to configure the settings in system view or port view
	In Ethernet port view	Enter Ethernet port view	interface interface-type interface-number
	In Ethernet port view	Apply the existing PoE profile to the port	apply poe-profile profile-name

& Note:

A PoE profile is a group of PoE configurations. Multiple PoE features can be set in a PoE profile. When the apply poe-profile command is used to apply a PoE profile to a port, some PoE features can be applied successfully while some PoE configurations in it cannot. PoE profiles are applied to S3600 series Ethernet switches according to the following rules:

l When the apply poe-profile command is used to apply a PoE profile to a port, the PoE profile is applied successfully only if one PoE feature in the PoE profile is applied properly. When the display current-configuration command is used for query, it is displayed that the PoE profile is applied properly to the port.

l If one or more features in the PoE profile are not applied properly on a port, the switch will prompt explicitly which PoE features in the PoE profile are not applied properly on which ports.

l The display current-configuration command can be used to query which PoE profiles are applied to a port. However, the command cannot be used to query which PoE features in a PoE profiles are applied successfully.

Caution:

l PoE profile configuration is a global configuration, and applies synchronously in the intelligent resilient framework (IRF) system.

l Combination of Unit creates a new Fabric. In the newly created Fabric, the PoE profile configuration of the Unit with the smallest Unit ID number will become the PoE profile configuration for the Fabric currently in use.

l Split of Fabric results in many new Fabrics. In each newly created Fabric, the PoE profile configuration of each Unit remains the same as it was before the split.

2.3 Displaying PoE Profile Configuration

After the above configuration, execute the display command in any view to see the running status of the PoE profile and verify the effect of the configuration by checking the displayed information.

Table 2-2 Display the PoE profile configuration

Operation	Command	Description
Display the detailed information about the PoE profiles created on the switch	display poe-profile { all-profile \| interface interface-type interface-number \| name profile-name }	You can execute the display command in any view

2.4 PoE Profile Configuration Example

I. Network requirements

Ethernent1/0/1 through Ethernet1/0/10 of the S3600-28P-PWR-EI switch are used by users of group A, who have the following requirements:

l The PoE function can be enabled on all ports in use.

l Signal cables are used to supply power.

l The PoE priority for Ethernet1/0/1 through Ethernet1/0/5 is Critical, whereas the PoE priority for Ethernet1/0/6 through Ethernet1/0/10 is High.

l The maximum power for Ethernet1/0/1 through Ethernet1/0/5 ports is 3,000 mW, whereas the maximum power for Ethernet1/0/6 through Ethernet1/0/10 is 15,400 mW.

Based on the above requirements, two PoE profiles are made for users of group A.

l Apply PoE profile 1 for Ethernet1/0/1 through Ethernet 1/0/5;

l Apply PoE profile 2 for Ethernet1/0/6 through Ethernet 1/0/10.

Figure 2-1 PoE profile application

II. Configuration procedure

# Create Profile1, and enter PoE profile view.

<H3C> system-view

[H3C] poe-profile Profile1

# In Profile1, add the PoE policy configuration applicable to Ethernet1/0/1 through Ethernet1/0/5 ports for users of group A.

[H3C-poe-profile-Profile1] poe enable

[H3C-poe-profile-Profile1] poe mode signal

[H3C-poe-profile-Profile1] poe priority critical

[H3C-poe-profile-Profile1] poe max-power 3000

[H3C-poe-profile-Profile1] quit

# Display detailed configuration information for Profile1.

[H3C] display poe-profile name Profile1

# Create Profile2, and enter poe-profile view.

[H3C] poe-profile Profile2

# In Profile2, add the PoE policy configuration applicable to Ethernet1/0/6 through Ethernet1/0/10 ports for users of group A.

[H3C-poe-profile-Profile2] poe enable

[H3C-poe-profile-Profile2] poe mode signal

[H3C-poe-profile-Profile2] poe priority high

[H3C-poe-profile-Profile2] poe max-power 15400

[H3C-poe-profile-Profile2] quit

# Display detailed configuration information for Profile2.

[H3C] display poe-profile name Profile2

# Apply the configured Profile1 to Ethernet1/0/1 through Ethernet1/0/5 ports.

[H3C] apply poe-profile Profile1 interface Ethernet1/0/1 to Ethernet1/0/5

# Apply the configured Profile2 to Ethernet1/0/6 through Ethernet1/0/10 ports.

[H3C] apply poe-profile Profile2 interface Ethernet1/0/6 to Ethernet1/0/10

H3C S3600 Series Ethernet Switches Operation Manual-Release 1510(V1.04)

I. Advantages of PoE

II. PoE components

1.1.2 PoE Features Supported by S3600

1.2 PoE Configuration Tasks

1.5 Setting PoE Management Mode and PoE Priority of a Port

1.8 Configuring PoE Over-Temperature Protection on the Switch

1.9 Upgrading the PSE Processing Software Online

1.11 PoE Configuration Example

I. Networking requirements

II. Networking diagram

III. Configuration procedure

2.1 Introduction to PoE Profile

2.2 PoE Profile Configuration Tasks

2.3 Displaying PoE Profile Configuration

I. Network requirements

II. Configuration procedure

Intelligent Terminal Products

Product Support Services

Technical Service Solutions

Resource Center

Policy

Online Help

Become a Partner

Partner Policy & Program

Global Learning

Partner Sales Resources

Service Business

News & Events

Contact Us