This chapter contains the following sections:
power inline
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 gi1/0/4switchxxxxxx(config-if)# power inline auto
power inline inrush test disable
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
power inline legacy support 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
power inline powered-device
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 gi1/0/4switchxxxxxx(config-if)# power inline powered-device ip_phone
power inline priority
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 gi1/0/4switchxxxxxx(config-if)# power inline priority high
power inline usage-threshold
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
power inline traps enable
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
power inline limit
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 gi1/0/1switchxxxxxx(config-if)# power inline limit 2222
power inline limit-mode
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]"
power inline negotiation
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.
Examples
The following example disabled negotiation on a port.
switchxxxxxx(config)# interface gi1/0/4
switchxxxxxx(config-if)# power inline negotiation none
show power inline
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.
Examples
Example 1—The following example displays information about the inline power for all ports (port power based).
switchxxxxxx(config)# show power inlinePort limit mode: EnabledUsage threshold: 95%Trap: EnabledLegacy Mode: DisabledInrush test: EnabledClass Error Detection: Enabled'
Unit | Module | Nominal Power (w) | Allocated Power (w) | Temp (c) | SW Version | PSE chipset HW Revision |
---|---|---|---|---|---|---|
------ | ----------- | ------------- | --------------- | ----------- | ------------- | --------------------- |
1 | 48P | 320 | 120 (37.5%) | 30 | 1.222.3 | PD69208 - 0x4BC2 PD69204 - 0x4AC2 |
2 | 24P | 240 | 0 (0%) | 50 | 1.222.3 | PD69208* - 0x4AC2 |
3 | 24P | 120 | 0 (0%) | 50 | 4.0.10.0 | TPS3288 - 0x40c4 |
Interface | Admin | Oper | Power | Class | Device | Priority |
---|---|---|---|---|---|---|
-------- | ---------- | ------------- | --------- | ------- | ------------------- | ----------- |
gi1/0/1 | Auto | On | 15.4(30) | 3 | IP Phone Model A | Critical |
gi1/0/2 | Auto | Searching | High | |||
gi1/0/3 | Never | Off | Low |
Examples
Example 2—The following example displays information about the inline power for a specific port.
switchxxxxxx(config)# show power inline gi1/0/1
Interface | Admin | Oper | Power | Class | Device | Priority |
---|---|---|---|---|---|---|
-------- | ---------- | ------------- | --------- | ------- | ------------------- | ----------- |
gi1/0/1 | Auto | On | 3 | IP Phone Model A | Critical |
Port status: Port is on - Valid PD resistor signature detectedPort standard: 802.3ATAdmin power limit: 30.0 wattsTime range:Link partner standard: 802.3AFOperational power limit: 30 wattsNegiotiated 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 wattsCurrent (mA): 81Voltage(V): 50.8Overload Counter: 5Denied Counter: 2Absent Counter: 0Invalid Signature Counter: 0
The following table describes the fields shown in the display:
Field | Description |
---|---|
Power | Inline power sourcing equipment operational status. |
Nominal Power | Inline power sourcing equipment nominal power in Watts. |
Allocated Power | The current total power allocation in Watts. |
Usage Threshold | Usage threshold expressed in percent for comparing the measured power and initiating an alarm if threshold is exceeded. |
Traps | Indicates if inline power traps are enabled. |
Port | Ethernet port number. |
device | Description of the device type. |
State | Indicates if the port is enabled to provide power. The possible values are Auto or Never. |
Priority | Port inline power management priority. The possible values are Critical, High or Low. |
Status | Power operational state. The possible values are On, Off, Test-Fail, Testing, Searching or Fault. |
Class | Power consumption classification of the device. |
Overload Counter | Counts the number of overload conditions detected. |
Short Counter | Counts the number of short conditions detected. |
Denied Counter | Counts the number of times power was denied. |
Absent Counter | Counts the number of times power was removed because device dropout was detected. |
Invalid Signature Counter | Counts the number of times an invalid signature of a device was detected. |
Inrush Test | Displays whether the inrush test is enabled or disabled. |
Field | Description |
---|---|
Port limit mode | Enabled for port limit and Disable for class limit. |
Legacy Mode | Enabled of Disabled legacy device support. |
Inrush Test | Displays whether the inrush test is enabled or disabled. |
SW version | The POE firmware version. |
HW Version | The POE hardware version |
Usage Threshold | Usage threshold expressed in percent for comparing the measured power and initiating an alarm if threshold is exceeded. |
Traps | Indicates if inline power traps are enabled. |
Module | The module name. |
Available Power | Inline power sourcing equipment nominal power in Watts. |
Allocated Power | The current total power allocation in Watts. |
Temp | Show the POE device temperature. |
Interface | Ethernet port number. |
Admin | Indicates if the port is enabled to provide power. The possible values are Auto or Never. |
Oper | Power operational state. The possible values are On, Off, Test-Fail, Testing, Searching or Fault. |
Power | Power consumed in watts, any allocated Power will appear in parens (). |
Class | Power consumption classification of the device (0-4). |
Device | Description of the device type set by the user. |
Priority | Port inline power management priority. The possible values are Critical, High or Low. |
Port status | The port status on/off with detailed reason (see bellow for details). |
Port standard | 802.3AF /802.3AT. |
Admin power limit | Port limit in watts used when the Port limit mode is Enabled. |
Time Range | The name of the time range associated with the interface. |
Link partner standard | 802.3AF/802.3AT. |
Operational Power Limit | Port actual power limit in watts. |
Current (mA) | Port current in Milli-Ampere. |
Voltage (V) | Port voltage in volts. |
Overload Counter | Counts the number of overload conditions detected. |
Short Counter | Counts the number of short conditions detected. |
Denied Counter | Counts the number of times power was denied. |
Absent Counter | Counts the number of times power was removed because device dropout was detected. |
Invalid Signature Counter | Counts the number of times an invalid signature of a device was detected. |
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.
show power inline savings
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.
Examples
Example 1—The following example displays PoE power saving on device.
switchxxxxxx(config)# show power inline savingsCurrent Power Savings: 45WCumulative Energy Saved: 180 [Watt*Hour]* Estimated Annual Power saving: 1800 [Watt*Hour]* Annual estimate is based on the saving during the previous weekNA – information for previous week is not available
clear power inline counters
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 .
Examples
The following example clears the power inline counters for gi1/0/2.
switchxxxxxx# clear power inline counters gi1/0/2
clear power inline monitor consumption
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
show power inline monitor consumption
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.
Examples
Example 1:
The following example displays the average hourly power consumption for the past day gathered for interface gi1/0/1.
switchxxxxxx# show power inline monitor consumption gi1/0/1 hours
|
|
(~) Not all samples are available.
* time stamp represents end of sampling period
Example 2:
The following example displays the average weekly power consumption for the past 52 weeks gathered for unit 1 .
switchxxxxxx# show power inline monitor consumption unit 1 weeks
|
|
unit 1
(~) Not all samples are available.
* time stamp represents end of sampling period