Power issues with Cisco access points Ensure adequate supply for stable operation
Power issues with Cisco access points Ensure adequate supply for stable operation
Hello! Your Cisco 2802I is showing red, green, and blue flashes indicating low power. Using an Aruba 2530-8G-PoE+ switch should provide sufficient power. Check the switch’s power settings or configuration to ensure it’s receiving adequate supply.
How long the cable stretches between the two devices is the main question, and what type of cable it is matters. It could be a standard CAT6 that works well, or perhaps a thinner version that doesn’t fit the usual setup. Regarding voltage, some PoE injectors deliver 48 volts while others push 56, which might mean the Cisco devices expect higher levels and HP sticks to 48 but keeps its quiet stance on specifics.
The cable measures just 5 meters and is a genuine CAT6 connection. There are some measurements available from the switch. (Observation made while the AP starts up)
Well, I’m running out of options too, except maybe HP has a feature that lets you turn on full PoE+ power delivery—though I’m skeptical about that.
PoE+ and PoE++ depend on LLDP communication between PSE and PD to inform the PD that it’s connected to a port delivering over 15W. On this AP model, LLDP is typically enabled by default. The switch should also support LLDP with the same setting. The relevant data is called LLDP-MED, and while the switch can have LLDP turned on or off, doing so intentionally isn’t recommended. For confirmation, run “show lldp config <interface>” and share the output here.