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PoE Configuration Procedure

The following procedure describes how to configure PoE. Unspecified parameters use their default values.

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PoE Configuration

Step Task Command(s)
1 Configure PoE parameters on ports to which PDs are attached.
  • admin — Enables (auto) or disables (off) PoE on a port. The default setting is auto.
  • priority — Sets which ports continue to receive power in a low power situation. If all ports have the same priority and the system has to cut power to the PDs, the PDs attached to the lowest numbered ports have the highest priority for receiving power. The default setting is low.
  • type — Associates an alias with a PD, such as “siemens phone.”
  • powerlimit — Sets the maximum power, in milliwatts, allowed on a port. Valid values are 0–15400 for 802.3af and 0–34000 for 802.3at. How this parameter is set can affect the class of PD that can be attached to the port.
  • capability — Sets the PoE mode for the port to 8023af (15.4W maximum power) or 8023at (34.0W maximum power).
 set port inlinepower port-string {[admin {off | auto}] [priority {critical | high | low}] [type type] [powerlimit powerlimit] [capability capability]}
2 Use the clear command to set the port‘s PoE parameters back to the default settings.
  • admin — auto
  • priority — low
  • type — null
  • powerlimit — 15400
  • capability — 8023af
 clear port inlinepower port-string {[admin] [priority] [type] [powerlimit] [capability]}
3 (Optional) Enable an SNMP trap message to be sent when the status of the chassis PoE power supplies or the PoE system redundancy changes. set inlinepower powertrap {disable | enable}
4 Use the clear command to reset chassis power trap messaging back to the default state of disabled. clear inlinepower powertrap
5 (Optional) Enable an SNMP trap message to be sent whenever the status of a module‘s ports changes, or whenever the module‘s PoE usage threshold is crossed. set inlinepower psetrap {disable | enable} module-number
6 Use the clear command to reset PoE trap messaging for a module back to default state of disabled. clear inlinepower psetrap module-number
7 (Optional) Set the PoE usage threshold on a module. Valid values are 1–99 percent. If your S- K- and 7100-Series device is a Standalone, specify 1 as the module-number. set inlinepower threshold usage-threshold module-number
8 Use the clear command to reset the PoE usage threshold on a specified module to the default value of 75 percent. clear inlinepower threshold module-number
9 (Optional) Set the percentage of total power available that a chassis can withdraw from the total power detected. set inlinepower available max-percentage
10 Use the clear command to reset the percentage of the total power available to a chassis to the default value of 100. clear inlinepower available
11 (Optional) Set the PoE management mode on a specified module.
  • realtime — Manages power based on the actual power consumption of the ports.
  • class — Manages power based on the IEEE 802.3af definition of the class upper limit for each attached PD. In this mode, the maximum amount of power required by a PD in the advertised class is reserved for the port, regardless of the actual amount of power being used by the device.

    If your S- K- and 7100-Series device is an Standalone, specify 1 as the module-number.

 set inlinepower management {realtime | class} module-number
12 Use the clear command to reset the PoE management mode on a specified module back to the default setting of realtime. clear inlinepower management module-number
13 (Optional) Configure the allocation mode for system power available for PoE.
  • auto — Available power is distributed evenly to PoE modules based on PoE port count. Any change in available power, due to a change in power supply status or redundancy mode or to the addition or removal of modules, triggers an automatic redistribution of power to the PoE controller on each PoE module.
  • manual —The power budget for each PoE module is configured manually, using the set inlinepower assigned command.

    The configured wattage assignments are used to calculate each module‘s percentage of total available power. If the total available PoE power changes, a redistribution of available power occurs, applying the calculated percentages.

 set inlinepower mode {auto | manual}
14 Use this command to reset chassis power allocation to the default mode of auto. clear inlinepower mode
15 (Only if the set inlinepower mode command is set to manual) Assign specific wattage to a PoE module.

If the set inlinepower mode command is set to manual, you must assign power to each PoE module; otherwise, the module ports will not receive power.

If the value set with this command is greater than the maximum power percentage specified with the set inlinepower available command, a warning will display in the show inlinepower output. If you execute these parameters, a ratio of assigned power is applied to each module.

If your S- K- and 7100-Series device is a Standalone, specify 1 as the slot-number.

 set inlinepower assigned power-value slot-number
16 Use the clear command to clear the power value manually assigned to one or more modules. clear inlinepower assigned [slot-number]

Refer to the S-, K-, and 7100 Series CLI Reference Guide for more information about each command.

Published May 2016prev | next

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