I have a DELL m1000e chassis with four DELL m6348 switches and since two days ago I see on the logs the following error:
ISDP: isdp_txrx.c(169) 459307 %%Foreign pdu on interface Po5 ...
The switch is still working fine and the port-channel. I do not see anything wrong with the STP no issues with the performance but the notification is still showing up. I cannot find anything on the internet about this error.
Does anyone know where these errors come from or what they mean?