Hello, We would need more details to be able to determine the issue, such as topology/configuration, and if there are any other errors. What type of cables/sfp are you using to interconnect the switches?Has this worked before without issue, and if not when did it start? What is the current firmware version of the switches? Lastly, are you able to upload the logs here [URL] Thanks Marco
Hi All, I got 2 identical switches, I use putty to connect to them one of them from time to time displayed some unwanted information like below <165>1 2021-07-19T18:32:56.396463+00:00 OS10 dn_alm 679 - - Node.1-Unit.1: PRI [event], Dell EMC (OS10) %IFM_OSTATE_UP: Interface operational state is up .... the other is fine. How can I fix it? please Thanks in advance. Regards  
S4128 - putty displays some weird things