We recently bought and setup 4 x EX4100-48MP switches, with almost the same configuration (main differences is number of ports assigned to each VLAN). 3 of the switches are working fine without incident, the 4th though is misreading the PoE Class requests from attached WAP devices and is coming up with crazy statistics such as consumed power six and a half kilowatts per PoE port! The same Ubiquiti WAPs work fine on the other 3 switches.
{master:0}[edit]
root@TSVCC-SW-G1-GLA2# run show poe interface
Interface Admin Oper Pair/Mode Max Priority Power Class
status status status power consumption
mge-0/0/0 Enabled ON SS/BT 30.0W Low 6553.5W* 4/-
mge-0/0/1 Enabled ON SS/BT 30.0W Low 6553.5W* 4/-
mge-0/0/2 Enabled ON SS/BT 30.0W Low 6553.5W* 4/-
mge-0/0/3 Enabled ON SS/BT 30.0W Low 6553.5W* 4/-
mge-0/0/4 Enabled ON SS/BT 30.0W Low 6553.5W* 4/-
mge-0/0/5 Enabled OFF SS/BT 15.4W Low 0.0W not-applicable
compared to one of the 3 behaving switches...
{master:0}
root@TSVCC-SW-G0-Pantry> show poe interface
Interface Admin Oper Pair/Mode Max Priority Power Class
status status status power consumption
mge-0/0/0 Enabled OFF SS/BT 15.4W Low 0.0W not-applicable
mge-0/0/1 Enabled ON SS/BT 45.0W Low 12.2W 5/-
mge-0/0/2 Enabled OFF SS/BT 15.4W Low 0.0W not-applicable
mge-0/0/3 Enabled ON SS/BT 45.0W Low 11.9W 5/-
mge-0/0/4 Enabled ON SS/BT 45.0W Low 14.8W 5/-
mge-0/0/5 Enabled ON SS/BT 45.0W Low 12.7W 5/-
mge-0/0/6 Enabled OFF SS/BT 15.4W Low 0.0W not-applicable
noting different ports have different Max. Power settings with all the WAP ports showing as Class 5 / 45.0Watts, however on the misbehaving switch, they show as Class 4 .
I have tried a global
poe {
interface all;
}
as well as targetting individual ports through
poe {
interface mge-0/0/2 {
maximum-power 45.0;
}
}
but the switch ignores the config PoE setting.
Even funkier is if you look at the "Power over Ethernet (PoE) Configuration" page in J-Web portal, it shows conflicting PoE information on the same page!
I have tried various 23.x and 24.x versions of firmware, I have tried zeroising it, tried EZSetUp and setting up from scratch from USB media, always with the same result. If I swap 2 switches, the "weird stuff" follows the one switch. I swapped the power supply between 2 units, no change in outcome.
So does anyone have idea what the hell is going on? Is it that the new switch is just faulty or is there some sorcery involved that I have encountered before? Any ideas most welcome. Thanks.
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STEPHEN MCBRIDE
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