Configuring Power Management On The Pe - Class And Static Mode - Dell C9000 Series Networking Configuration Manual

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
Allocating PoE Power to Power Devices to a Connected PE Interface
powered devices, see
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
• 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
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
Managing Ports using Power Priority and the Power Budget
Power over Ethernet (PoE).
stack-unit unit-number{static | class}
For information about classes for
Interface.
Power over Ethernet (PoE)
and
876