Symptoms

Summary When a switch is added to a stack, or is being replaced with a different model in a stack, this can result in "Cfg mismatch" under Switch Status in #show switch. Products Affected N1500N2000/N2100N3000/N3100/N3000E-ONN4000 series

Cause

This occurs when the actual switch model and the designated switch model do not match.

Resolution

Solution Confirm that all units are on the same firmware version. Save a copy of the running configuration for the stack to your local personal computer. These steps WILL ERASE the configuration for the unit number being removed and readded. If the con fig is not backed up, the ports on that switch it must be manually reconfigured. Power off the unit in question Run the following commands: CommandsDescriptionshow supported switchtypeThis shows all models that could be in the stack- identify the number corresponding to the correct modelconfConfiguration modestackStack configuration modeno memberRemoves all configuration of that unit number from the stackmemberAdd the unit back to the stack with the correct model number from the first commandendExit con fig modeshow switchVerify resolution- "Cfg mismatch" should be replaced with "Ok"writeSave changes Reapply the configuration for that unit This can be done from the command line with copy paste or from switch UI where you upload the backup configuration file from step 2. Power on the switch member Verify resolution and save changes

Support Cases