ICX7450 PoE fails with some Dell Optiplex NIC models patched in

[LVBrocade]

We were seeing issues where it appeared that our ICX7450-48p units would have the POE modules fail at random in the field but on recovery would seem fine. After a lot of troubleshooting we found that certain model Dell Optiplex with Intel(R) Ethernet Connection (17) I219-LM cards will cause the switch POE to fault when plugged into the network. We have seen this with multiple switches at multiple locations and they all recovery following a reboot if the Dell is disconnected.

The switches all had the same POE hardware...

Show inline power detail: V1R2

V2R2 and V1R3 modules never had this issue. Below are model specifics on one of the specific Dells that triggered this issue...

Optiplex 7010

Manufacturer  Product  SerialNumber              Version                       

Dell Inc.     0YGWFV   /CNFCW002B300MB/  A00

Intel(R) Ethernet Connection (17) I219-LM

The product there denotes the motherboard model. This specific Dell eventually had a board issue and an RMA. Afterward the model changed to rev A01 and that unit no longer caused this issue....

We have seen this issue with certain Dell models purchased as recently as a month ago.

[Mayank]

Hi LVBrocade ,

Thank you for posting you query !!!

I understand that ICX7450 PoE fails with some Dell Optiplex NIC models patched in

I have a question for you here :

Have you tried any troubleshooting steps? For example, enable-disable the PoE,  perform a software upgrade.

Did you have a power outage?

The switch was connected to a UPS?

Did you test it on several ports? What was the result?

Could you please share  the below logs

sh inline power
sh inline power detail
sh inter ether x/x/x -interfaces affected by the PoE

show inline power emesg

show chassis

Moving Forward If this issue is not resolved , Please log a ticket with the below link so that we will help you further

https://support.ruckuswireless.com/contact-us

I hope this information helps you

Please feel free to leave us a message if any concerns

Note: Please feel free to mark the post as ACCEPTED SOLUTIONS if its addressed your query.

Thanks

[LVBrocade]

We're not using any optics or SFP in these scenarios. This is happening when a specific model of Dell Optiplex with the Intel ethernet card is plugged in using cat5/cat6 to an ICX7450 with the listed POE hardware module. The POE faults until the Dell PC has the Rj45 unplugged.

We've had roughly 2 dozen Optiplex's exhibit this behavior with a dozen ICX7450s in deployment. At this point we're not really looking for a resolution because we know there likely won't be one as this seems to be a hardware compat problem between vendors, but want people to know this happens and why if they encounter a mysterious POE outage after buying a Dell PC.