Hi @Somnus thanks for your reply! Isn't if there is a loop on the switch device, the log will appear regularly? but in this case, the notification pops up unexpectedly. Best regards, Agung

Hi support team, I have switch model T2500G-10TS 1.0, currently we have problem sometime switch port interface detected up and down. can u help me for fix this problem? please ignore for time cause...