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.