Extreme Networks ExtremeWare XOS 11.1, Руководство пользователя

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Power Delivery
ExtremeWare XOS 11.1 Concepts Guide
107
Port Power Reset
You can set ports to experience a power-down, discover, power-up cycle without returning the power to
the slot’s reserved power budget. This function allows you to reset PDs without losing their claim to the
reserved power budget.
The following command power cycles the specified ports:
reset inline-power ports <port_list>
Ports are immediately depowered and repowered, maintaining current power allocations.
PoE Usage Threshold
The system generates an SNMP event when any slot has consumed a specified percentage of that slot’s
reserved power budget. The default value is 70%; you can configure this threshold to generate events
from 1% to 99% consumption of the reserved power budget. This threshold percentage is set to be the
same for each PoE slot; you cannot configure it differently for each PoE module. You can also configure
the system to log an Event Management System (EMS) message when the usage threshold is crossed
(refer to
Chapter 7 for more information on EMS).
Although the threshold percentage of measured to budgeted power applies to all PoE modules, the
threshold measurement applies only to the percentage
per slot of measured power to budgeted power
use; it does not apply to the amount of power used switchwide.
To configure the threshold percentage of budgeted power used on a slot that causes the system to
generate an SNMP event and EMS message, use the following command:
configure inline-power usage-threshold <threshold>
To reset the threshold that causes the system to generate an SNMP event and EMS message per slot to
70% for measured power compared to budgeted power, use the following command:
unconfigure inline-power usage-threshold
Legacy Devices
ExtremeWare XOS software allows the use of non-standard PDs with the switch. These are PDs that do
not comply with the IEEE 802.3af standard.
The system detects non-standard PDs using a capacitance measurement. You must enable the switch to
detect legacy devices; the default value is disabled. You configure the detection of legacy PoE devices
per slot.
Detecting a PD through capacitance is used only if the following two conditions are both met:
●
Legacy PD detection is enabled.
●
The system unsuccessfully attempted to discover the PD using the standard resistance measurement
method.
To enable the switch to use legacy PDs, use the following command:
enable inline-power legacy slot