Users Guide

• Priority — Used for priority calculation.
• PD requested power value — Used for power allocation.
• PSE allocated power value — Used to check whether the PD is in sync with the PSE.
NOTE: For more information about the advertise med power-via-mdi and advertise dot3-tlv
power-via-mdi commands, refer to the Dell Command Line Reference Guide.
Manage Inline Power
By default, PoE/PoE+ is disabled.
To manage the inline power supplied to the ports, use the power inline mode command in Configuration
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. You can use this mode to configure port priority.
• static — When you configure static mode, the inline power is allocated based on the actual power
consumed by the powered device. The power the PD requests is allocated and is 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.
NOTE: The power inline max_milliwatts command enables the inline power supplied to an
interface. The max_milliwatts option works only when you use Static 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 the ports.
• stack-unit unit-number — Specify the stack unit number. The range is from 1 to 12.
Set the Threshold Limit for the PoE Power
Budget
To set the global threshold limit of the total power available for PoE on the port use the power budget
global-threshold stack-unit unit—number threshold-value command in Configuration mode.
This command has the following parameters.
• stack unit unit-number — Enter the keywords stack unit and specify the stack unit number. The
range is from 1 to 12.
• threshold-value — Enter the power threshold limit value in percentage. Range is from 10 to 99.
Default value is 99.
Example of Setting the Global Threshold Limit
The following example sets the global threshold limit for the PoE power budget to 10 percent on stack unit 1.
Dell(conf)#power budget global-threshold stack-unit 1 10
Dell(conf)#exit
Power over Ethernet (PoE) 698