To configure the inline power administrative mode on an interface, use the power inline Interface Configuration mode command.

Syntax

power inline auto [time-range time-range-name]

power inline never

Parameters

• auto—Turns on the device discovery protocol and applies power to the device.

• never—Turns off the device discovery protocol and stops supplying power to the device.

• time-range-name—Specifies a time range. When the time range is not in effect the power is not supplied the attached device. If a time range is not specified, there is no time range bounded to the port. (Range: 1–32 characters)

Default Configuration

The default configuration is set to auto.

Command Mode

Interface (Ethernet) Configuration mode

User Guidelines

The never parameter cannot be used with a time range.

Example

The following example turns on the device discovery protocol on port 4.

switchxxxxxx(config)# interface gi1/0/4
switchxxxxxx(config-if)# power inline auto

To disable the inrush test (a hardware test that checks input surge current for PoE devices), use the power inline inrush test disable Global Configuration mode command. To enable the inrush test, use the no form of this command.

Syntax

power inline inrush test disable

no power inline inrush test disable

Default Configuration

Inrush test is enabled.

Command Mode

Global Configuration mode

Example

The following example disable inrush test.

switchxxxxxx(config)# power inline inrush test disable

To disable the legacy PDs support, use the power inline legacy support disable Global Configuration mode command. To enable the legacy support, use the no form of this command.

Syntax

power inline legacy support disable

no power inline legacy support disable

Default Configuration

Legacy support is enabled.

Command Mode

Global Configuration mode

Example

The following example disables legacy PDs support.

switchxxxxxx(config)# power legacy support disable

To add a description of the device type, use the power inline powered-device Interface Configuration mode command. To remove the description, use the no form of this command.

Syntax

power inline powered-device pd-type

no power inline powered-device

Parameters

pd-type—Enters a comment or a description to assist in recognizing the type of the device attached to this interface. (Length: 1–24 characters)

Default Configuration

There is no description.

Command Mode

Interface (Ethernet) Configuration mode

Example

The following example adds the description ‘ip phone’ to the device connected to port 4.

switchxxxxxx(config)# interface gi1/0/4
switchxxxxxx(config-if)# power inline powered-device ip_phone

To configure the interface inline power management priority, use the power inline priority Interface Configuration (Ethernet) mode command. To restore the default configuration, use the no form of this command.

Syntax

power inline priority {critical | high | low}

no power inline priority

Parameters

• critical—Specifies that the device operation is critical.

• high—Specifies that the device operation is high priority.

• low—Specifies that the device operation is low priority.

Default Configuration

The default configuration is set to low priority.

Command Mode

Interface (Ethernet) Configuration mode

Example

The following example sets the inline power management priority of port gi1/0/4 to High.

switchxxxxxx(config)# interface gi1/0/4
switchxxxxxx(config-if)# power inline priority high

To configure the threshold for initiating inline power usage alarms, use the power inline usage-threshold Global Configuration mode command. To restore the default configuration, use the no form of this command.

Syntax

power inline usage-threshold percent

no power inline usage-threshold

Parameters

percent—Specifies the threshold in percent to compare to the measured power. (Range: 1–99)

Default Configuration

The default threshold is 95 percent.

Command Mode

Global Configuration mode

Example

The following example configures the threshold for initiating inline power usage alarms to 90 percent.

switchxxxxxx(config)# power inline usage-threshold 90

To enable inline power traps, use the power inline traps enable Global Configuration mode command. To disable traps, use the no form of this command.

Syntax

power inline traps enable

no power inline traps enable

Default Configuration

Inline power traps are disabled.

Command Mode

Global Configuration mode

Example

The following example enables inline power traps.

switchxxxxxx(config)# power inline traps enable

To configure the power limit per port on an interface, use the power inline limit Interface Configuration mode command. To return to default, use the no form of the command.

Syntax

power inline limit power

no power inline limit

Parameters

power—States the port power consumption limit in Milliwatts, Range is 0-60000.

Default Configuration

The default value is 30W

Command Mode

Interface (Ethernet) Configuration mode

User Guidelines

The operational power limit is the minimum of the configured power limit value and the maximum power capability on port. For example, if the configured value is higher than 15.4W on a PoE port, the operational power limit is 15.4W.

Example

The following example sets inline power on a port.

switchxxxxxx(config)# interface gi1/0/1
switchxxxxxx(config-if)# power inline limit 2222

To set the power limit mode of the system, use the power inline limit-mode Global Configuration mode command. To return to default, use the no form of this command.

Syntax

power inline limit-mode {class | port}

no power inline limit-mode

Parameters

• class—The power limit of a port is based on the class of the PD (Power Device) as detected during the classification process

• port—The power limit of a port is fixed regardless of the class of the discovered PD.

Default Configuration

The default value is class

Command Mode

Global Configuration mode

User Guidelines

Changing the PoE limit mode of the system will turn the power OFF and ON for all PoE ports.

Example

The following example sets the power limit to class.

switchxxxxxx(config)# power inline limit-mode class
"Changing the PoE limit mode of the system will turn the power OFF and ON for all PoE ports. Are you sure? [y/n]"

To configure the inline power to enabled the spare pair, use the power inline four-wire forced Interface Configuration mode command.

Syntax

power inline four-pair forced

no power inline four-pair forced

Parameters

Default Configuration

The default configuration is set to no four-pair forced.

Command Mode

Interface (Ethernet) Configuration mode

User Guidelines

This command should only be used for ports that are connected to devices that do not support the CDP/LLDP protocol or the new 4-wire power via MDI TLV (like UPOE splitter).

The command is used to force the spare pair to supply power, this allows the usage of 60 Watts PoE.

CDP/LLDP will reflect power allocated of 60W regardless of power requested.

This force command overrides any port mode or port limit configuration.

Example

The following example force the spare pair in port 4.

switchxxxxxx(config)# interface gi1/0/4
switchxxxxxx(config-if)# power inline four-pair forced

The power inline negotiation Interface Configuration mode command is used to select which negotiation types are allowed on an interface. To return an interface to the default supported negotiation types, use the no form of this command.

Syntax

power inline negotiation {none | all}

no power inline negotiation

Parameters

none—indicates that no negotiation is allowed on the port.

all—indicates that all supported negotiation methods are allowed on the port.

Default Configuration

All supported negotiation methods are allowed on the port.

Command Mode

Interface (Ethernet) Configuration mode

User Guidelines

If the none option is selected, all negotiation packets will be ignored.

To display information about the inline power for all interfaces or for a specific interface, use the show power inline privileged EXEC mode command.

Syntax

show power inline [interface-id | module unit-id]

Parameters

• interface-id—Specifies an interface ID. The interface ID must be an Ethernet port.

• module unit-id—Specifies the unit ID of the stack member.

  Note	Relevant for stackable systems only.

Default Configuration

Show information for all ports.

Command Mode

Privileged EXEC mode

User Guidelines

In a stack, only devices which support PoE are displayed.

Port status: Port is on - Valid PD resistor signature detected
Port standard: 802.3AT
Admin power limit: 30.0 watts
Time range:
Link partner standard: 802.3AF
Operational power limit: 30 watts
Negiotiated power: 18 watts (LLDP)

#EDITOR: Power negotiation is done via CDP/LLDP . In case there was no power negotiation with PD, the display of protocol type will be (none). In case there was power negotiation, but it did not end in allocation of power by PSE, display will be "0 watts (LLDP)" (power could still be allocated by Hardware). In case negotiation has expired, the word "Expired" will be added, with the latest value that was negotiated (e.g. "20Watts (LLDP - Expired)").

Allocated power: 16 watts
Current (mA): 81
Voltage(V): 50.8
Overload Counter: 5
Denied Counter: 2
Absent Counter: 0
Invalid Signature Counter: 0

The following table describes the fields shown in the display:

Following is a list of port status values:
Port is on - Valid capacitor/resistor detected.
Port is on - Valid resistor/capacitor detected.
Port is on - 4 pairs.
Port is on - Forced 4 pairs.
Port is off - Main supply voltage is high.
Port is off - Main supply voltage is low.
Port is off - Hardware pin disables all ports.
Port is off - Non-existing port number.
Port is yet undefined.
Port is off - Internal hardware fault.
Port is off - User setting.
Port is off - Detection is in process.
Port is off - Non-802 - 3af powered device.
Port is off - Overload & Underload states.
Port is off - Underload state.
Port is off - Overload state.
Port is off - Power budget exceeded.
Port is off - Internal hardware fault.
Port is off - Voltage injection into the port.
Port is off - Improper Capacitor Detection results.
Port is off - Discharged load.
Port is on - Detection regardless (Force On).
Undefined error during Force On.
Supply voltage higher than settings.
Supply voltage lower than settings.
Disable_PDU flag raised during Force On.
Port is forced on, then disabled.
Port is off - Forced power error due to Overload.
Port is off - Out of power budget while in Force On.
Communication error with PoE devices after Force On.
Port is off - Short condition.
Port is off - Over temperature at the port.
Port is off - Device is too hot.
Unknown device port status.
ForcePowerErrorShortCircuit.
ForcePowerErrorChannelOverTemperature.
ForcePowerErrorChipOverTemperature .
PowerManagment - Static Calculated power is bigger than power limit.
PowerManagment - Static OVL PD class report (user predefined power value).
Static Calculated power (power limit during Force On).
Static OVL PD class report (user predefined power value during Force On).
High power port is ON - High power device was detected.
Chip Over Power - Sum of square currents exceeded SumPowerLimit.
Force Power Error Chip Over Power, during Force On.
Port is off - Class Error - Illegal class.

To display information about the device inline power saving, use the show power inline savings privileged EXEC mode command.

Syntax

show power inline savings

Command Mode

Privileged EXEC mode

User Guidelines

Use the show power inline savings command to display the total power saved by using the PoE time range feature which shuts down PoE to ports in specific times.

To clear power inline interface counters, use the clear power inline counters Privileged EXEC mode command.

Syntax

clear power inline counters [interface-id]

Parameters

interface-id—(Optional) Specifies an interface ID. The interface ID must be an Ethernet port type. If interface ID is not specified - counters for all interfaces are cleared.

Default Configuration

All interface counters are cleared.

Command Mode

Privileged EXEC mode

User Guidelines

The clear power inline counters command is used to reset power inline interface counters: Overload, Short, Denied, Absent and Invalid Signature .

To clear power inline consumption monitor info on all or on a specific interface or interface list, use the clear power inline monitor consumption Privileged EXEC mode command.

Syntax

clear power inline monitor consumption [interface-id-list]

Parameters

interface-id-list—(Optional) Specifies a list of interface ID. The interface ID must be an Ethernet port type. If interface ID is not specified - consumption information for all interfaces is cleared.

Default Configuration

All monitored interface info are cleared.

Command Mode

Privileged EXEC mode

Example

The following example clears the monitored statistics for gi1/0/1.

switchxxxxxx#  clear power inline monitor consumption gi1/0/1

To display the average monitored power consumption info, use the show power inline monitor consumption Privileged EXEC mode command

Syntax

show power inline monitor consumption {interface interface-id | Unit unit-id} {minutes|hours | days |weeks}

Parameters

• interface interface-id— Specifies an interface ID. The interface ID must be an Ethernet port.

• Unit unit-id—Total PoE consumption info for specified unit ID will be displayed

• minutes —Average minute consumption. Displays the last 60 samples, sampled every 60 seconds (every round minute according to system time)

• hours —Average hour consumption. Displays the last 24 samples, sampled every 60 minutes (every round hour according to system time).

  Note	Relevant for stackable systems only.

• days —Average daily consumption. Displays the last 7 samples, sampled every 24 hours (midnight to midnight according to system time).

• weeks —Average Weekly Consumption. Displays the last 52 samples, sampled every 7 days (midnight Saturday to midnight Saturday according to system time).

Default Configuration

This command has no default settings.

Command Mode

Privileged EXEC mode

User Guidelines

The show power inline monitor is used to show average power consumption for specified time frame.

Note: only days and weeks samples are persisted after reload.

 unit 1

(~) Not all samples are available.

* time stamp represents end of sampling period