topic Re: Ports denied power in ExtremeSwitching (Other)

Ports denied power

HeyHelpDeskGuy — Thu, 26 Aug 2021 07:24:52 GMT

Hey all,

We had a power outage and when everything came back on, my Extreme Switch boots, and reads uplink (port 10) but ports 1 & 7 where items were plugged in, no longer work. I ran SH Tech, and it says that Ports 1 & 7 are being denied power.

What should I do fi fix this switch? I checked the outlet with an outlet tester and power is fine.

Thank you!

Re: Ports denied power

StephanH — Thu, 26 Aug 2021 15:05:33 GMT

Hello,

maybe your power budget for PoE is exceeded.
Check how many devices are supplied with PoE on the switch.
In the datasheet of your switch you can see how much power budget you have.

Re: Ports denied power

HeyHelpDeskGuy — Thu, 26 Aug 2021 18:27:44 GMT

Hi StephanH,

Right, it’s odd. There’s only two devices plugged in. Device one in port 1, and device two in port 7. Everything was working fine before the power outage.

The switch is a X430 8 port and according to the manual total Power = 84.2Watt

Re: Ports denied power

StephanH — Thu, 26 Aug 2021 19:28:50 GMT

Have you tried turning PoE off and on again?
With disable/enable inline-power port x?
What is in the log after executing these commands?

Re: Ports denied power

HeyHelpDeskGuy — Thu, 26 Aug 2021 19:30:45 GMT

I have not tried that.

So I can connect to the switch and then the command is simply, disable inline-power port 1? And then reenable, enable inline-power port 1 ?

Re: Ports denied power

StephanH — Thu, 26 Aug 2021 20:59:01 GMT

Hello,

Yes with that command you can enable/disable poe for a specific port.

Re: Ports denied power

HeyHelpDeskGuy — Thu, 26 Aug 2021 22:48:16 GMT

StephanH,

I’ll try that right now. I took the switch home with me so I don't have anything to plug in but I think if I run the commands from above you gave me, and then retested with SH TECH, that should be enough?

Re: Ports denied power

StephanH — Fri, 27 Aug 2021 00:21:44 GMT

As first step you can check logs. But if there is no PoE client you will not see an log entry.

Re: Ports denied power

HeyHelpDeskGuy — Fri, 03 Sep 2021 08:36:12 GMT

Hey @StephanH ,

Tomorrow I’m going back to the location with the Extreme Switch to try all of this.

First I’ll reconnect everything and try each device one by one to see if one device is bad. I know the door controller was fried by lightning previously so that could be part of the problem.
If the problem continues I’ll try to turn POE off then on by the command disable inline-power port 1 then use command enable inline-power port 1, and retry.
If problems persist I’ll report back here (again THANK YOU) for your help with all of this.
At worst I’ll see about sending the switch back to Extreme

Re: Ports denied power

StephanH — Fri, 03 Sep 2021 12:47:29 GMT

Hello,

if you are onside you can use the following show commands to see the current status:

show inline-powershow inline-power configuration portsshow inline-power info detail portsshow inline-power stats ports

I am curious what you hersusfinden tomorrow.

Re: Ports denied power

HeyHelpDeskGuy — Fri, 03 Sep 2021 21:09:49 GMT

Hi @StephanH,

So I disabled then enabled POE on port 1.

Then I checked the status again and got this:

The AP in Port 1 is still not receiving POE.

Re: Ports denied power

HeyHelpDeskGuy — Fri, 03 Sep 2021 23:26:32 GMT

Also to add @StephanH - I tried a few other things and still nothing. I’m going to contact Extreme and file and RMA. Thank you.

Re: Ports denied power

StephanH — Sat, 04 Sep 2021 00:48:28 GMT

That's the correct decision.