Administrator Guide

Configuring Power Management on the PE — Class and Static
Mode
By default, PoE or PoE+ are disabled.
To manage the inline power supplied to the port extender ports, use the power inline mode command in Configuration
mode. The mode configuration applies to all the ports on the port extender. To manage the inline power in a port extender, you
can configure Class or Static mode.
This command has the following parameters.
● class — When you configure Class mode, the maximum power for the particular class of device is allocated. Class mode
supports power allocation through Layer 2 classification and power negotiation by the LLDP 802.3at standard. If you are
configuring port priority, use Class mode. For information about port priority, see Managing Ports using Power Priority and
the Power Budget and Allocating PoE Power to Power Devices to a Connected PE Interface For information about classes
for powered devices, see Power over Ethernet (PoE).
NOTE: The power inline max_milliwatts command enables the inline power supplied to an interface. The
max_milliwatts option only works when you use Static Management mode. When you enable Class mode, the
max_milliwatts option has no effect on the interface. Instead, the maximum limit in Class mode applies to all the
ports on the port extender. For more information, see Allocating PoE Power to Power Devices from a PE Interface.
● static — When you configure Static mode, the inline power allocates based on the actual power consumption by the
powered device (PD). The power the PD requests is given and reduced from the available pool. Power negotiation through
LLDP (extended power via MDI TLVs or IEEE 802.3 at power-via-mdi TLVs) is not supported in static mode. Ports you
configure in Static mode reserve a fixed power allocation whether a device is connected or not. By default, 15.4 W is
allocated for PoE and 30.0 W for PoE+. No dynamic PoE/PoE+ class detection performs on Static ports. The default Power
Management mode is static.
● pe pe-id — Specify the port extender ID. The range is from 0 to 255.
● stack-unit unit-number — Specify the stack unit number of the port extender. The range is from 0 to 7.
● Enable PoE and configure Power Management mode on a port extender.
Configuration mode
power inline mode pe pe—id stack-unit unit-number{static | class}
Example: Configuring Power Management Static Mode on the Port Extender
The following example configures the power management to Static mode on the port extender 0 on stack unit 0.
Dell(conf)#power inline mode pe 0 stack-unit 0 static
Example: Displaying PoE Power Allocation on a Port Extender
The following example displays the PoE power allocation on a specified port extender, using the show power inline {pe
pe-id stack—unit unit number | interface interface } command in EXEC and EXEC Privilege mode.
Dell#show power inline pe 0 stack-unit 0
Global inline power Threshold : 99
Power Reserved for inline Power :841W
Total Inline Power Consumed: 0W
Remaining inline power Available :841W
Power Management Mode : Static
Interface Inline Power Inline Power Class Device PoE Port LLDP
Max / Alloc Consumed Type Priority Support
(Watts) (Watts)
---------- ----------- ----------- ------ ------ ------- ------
PeGi 0/0/0 30.00/0.00 0.00 NO_PD - low 0
Power over Ethernet (PoE)
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