Allows you to set the amount of power held in reserve for redundancy.
no
Means that all available power can be allocated to PDs.Default: No PoE redundancy
enforced.
n+1
One of the power supplies is held in reserve for redundancy. If a single power supply
fails, no powered devices are shut down.If power supplies with different ratings are
used, the highest-rated power supply is held in reserve to ensure full redundancy.
full
Half of the available power supply is held in reserve for redundancy. If power supplies
with different ratings are used, the highest-rated power supply is held in reserve to
ensure full redundancy.
For more information about PoE redundancy and power supplies, see the PoE/PoE+ planning and
implementation guide, available on the website at
number for your switch, For example, “Aruba switch 2930”, then select the device from the list, and click on
Product manuals
. Click on the “Setup and install — general” link under
Manuals
.
Changing the threshold for generating a power notice
You can configure one of the following thresholds:
• A global power threshold that applies to all ports on the switch. This setting acts as a trigger for sending a
notice when the PoE power consumption on any PoE port installed in the switch crosses the configured global
threshold level. (Crossing the threshold level in either direction—PoE power usage either increasing or
decreasing— triggers the notice.) The default setting is 80%.
• A per-slot power threshold that applies to an individual PoE module installed in the designated slot. This
setting acts as a trigger for sending a notice when the module in the specified slot exceeds or goes below a
specific level of PoE power consumption.
NOTE:
Some switches covered by this manual provide a single fixed slot.
Syntax:
power-over-ethernet [slot <
slot-id-range
>] threshold <1-99>
This command specifies the PoE usage level (as a percentage of the PoE power available on a module) at which
the switch generates a power usage notice. This notice appears as an SNMP trap and a corresponding Event Log
message and occurs when a PoE module's power consumption crosses the configured threshold value. That is,
the switch generates a notice whenever the power consumption on a module either exceeds or drops below the
specified percentage of the total PoE power available on the module.
This command configures the notification threshold for PoE power usage on either a global or per-module (slot)
basis.
Without the
[slot PoE
<slot-id-range>
]
option, the switch applies one power threshold setting on all PoE
modules installed in the switch.
Example:
Suppose slots A, B, and C each have a PoE module installed. In this case, executing the following command sets
the global notification threshold to 70% of available PoE power:
switch(config)# power-over-ethernet threshold 70
Chapter 4 Power Over Ethernet (PoE/PoE+) Operation
113
