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Wicket123

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Can't run all ports in 802.3at mode - not enough power (even though there really is)

I have 10 HP/Arruba Procurve 2530 POE+ switches.  We purchased new Ruckus r610 access points that run on 802.3at instead of 802.3af.  They pull about 23 watts at startup, then even out between 5 and 8 watts.  If all ports on the switch are running at 5-8 watts, there is enough power for all of the devices.  But because they do use over 23 watts at startup, the switch won't provide power to all of the ports because it goes over the maximum available power.  They do some calculation of current power and max power and figure out how much they can provide that is more than the running 5-8 watts, but less than the startup 23-25 watts.  Arruba says they can't do anything, as it's POE standard.

I can turn off lldp on the switch, so all ports basically run in 802.3af mode.  The APs all power on and run fine, except they turn off the USB and second ethernet port.  Apparently that is not a setting that I can change on the Ruckus APs.

I really want that second port turned on, but want to avoid purchasing more switches or ac adapters.

Anyone have any ideas on how to do this?

Tried and didn't work:
Manual CLI command for AP to run in 802.3at mode

Turn lldp back on, but limit max power to switch ports to 10W, with and without manual AP command
Avatar of David Johnson, CD
David Johnson, CD
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buy some power injectors for the problematic ap's
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Wicket123

ASKER

Sure.  I could by POE+ power injectors, but each one creates a new possible point of failure.  Also, then I can't remotely restarts those APs as I can when they get POE from the switch.


I could also buy more switches.  I could buy AC adapters.  Each increases complexity and adds points of failure (plus cost).

What I'm looking for is a way to make this setup work, as there is sufficient power available in the switches to run all of the APs.  Just not according to the way the POE wattage requirements are calculated by HP.
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