How can I check, if the Power Supply inside a MS130-24X Switch is working or not

[Holli69]

We have a problem with one MS130-24X Switch. On 5 Ports, we have connected 5 x CW9162I-MR Access Points with PoE enabled. They are working well for a while, but since 3 days, they are off, the switch itself is not.

On device health, the switch shows:

Power supplies

This switch does not have a removable power supply.

PoE Usage

PoE is disabled. All non-PoE power supplies must be removed or replaced with PoE power supplies.

So I think I have to go Onsite and must have a look what happens with the AP's and the Switch or is there another possibility to see what happens ?

[rwiesmann]

Do you you have any Event log entries on that day for the switch...there you maid see what happened.

And can you see that the ports where the AP are connected still providing PoE?

Bevor going onsite I would for sure, first cycle the ports and if this did not help reboot the switch.

For me it looks like the switch has some problems with providing PoE.

[alemabrahao]

I would try restarting the switch or performing a firmware update first.

[AlexL1]

Hi Holli69,

I agree with both comments above and I would like to add the following:

The MS130-24X switch should be able to provide enough PoE for 5 APs even more as per documentation - MS130 Datasheet. It's with PoE Switch Budget - 370W.

(1) Power cycle the switchport

(2) Disable / Enable the switchport

(3) Upgrade the switch to the latest firmware version --> This will also reboot the switch.

(4) Upgrade all APs to the latest stable firmware version.

(5) Check if there is any policy overriding the switchports configurations - Access Policy Types

• Access Policy: Apply a restriction policy to this port

(6) Does Organization --> Change log shows any changes around that time when they stopped working?

(7) The Power Supply is Fixed Internal, so you can't replace it, therefore if the issue still persist, try connecting the switch to entirely different power socket circuit --> This will rule out the power circuit as an issue.

(8) Check for any Alert under Organization --> Alert's page

(9) Check the Event log for the specific switchports.

(10) Start taking switchport packet capture, prior the start of the reboot process on one of the AP - Investigate the PCAP - Troubleshooting PoE on MS switches

Additional info: 

• Root Cause Analysis (RCA) - Alert Based Workflows
• CW916x Family Frequently Asked Questions

If you have any further questions, please don't hesitate to contact us.