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HP ProCurve 5400zl Switch Series - Power on Ethernet (PoE) LED Explained
The 5400ZL management module has a PoE LED which is used to summarize all PoE status.
The PoE status LED is a cumulative LED for all the ports/slots. It allows the user to see the PoE state of the switch at a glance without putting all the LEDs into PoE mode. The LED displays the highest level of failure/alert of all the slots/ports. So, if one of the ports is denied power and the port LED is flashing an alert in PoE mode, then the PoE status LED is also flashing an alert. If one of the ports is faulted because of an internal hardware problem, then the PoE status is flashing a fault (i.e., slow-flash amber). Interpret the LED as follows:
NOTE: If there are multiple indications that need to be displayed, they are shown in the following order: slow-flash amber, fast-flash amber, on, off.
When the LEDs are in PoE mode, the Port Link LED is no longer an indication of port link. It is used in conjunction with the mode LED to fully indicate the port’s PoE status.