Configuring the Switch to Detect Legacy PDs

The PoE (Power over Ethernet) device can detect non-standard, legacy PDs, which do not conform to the IEEE 802.3af standard, using a capacitance measurement. However, you must specifically enable the switch to detect these non-standard PDs; the default value for this detection method is disabled.

This configuration applies to the entire switch; you cannot configure the detection method per slot.

The switch detects PDs through capacitance only if both of the following conditions are met:

The legacy detection method is enabled.
The switch unsuccessfully attempted to discover the PD using the standard resistance measurement method.

To configure a switch to detect legacy, non-standard PDs for a specified slot, use the following command:

configure inline-power detection [802.3af-only | legacy-and-802.3af] slot slotnum
To configure the switch to detect legacy PDs on a switch, use the following command:

configure inline-power detection [802.3af-only | legacy-and-802.3af | bypass] ports port_list
To reset the switch to the default value which does not detect legacy PDs, on a specified slot use the following command:

unconfigure inline-power legacy slot slot
To reset the switch to the default value which does not detect legacy PDs, use the following command:

unconfigure inline-power legacy
To display the status of legacy detection, use the following command:

show inline-power

Published March 2020prev | next

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