Dell Networking OS6 N Series Switch Stack - Resolve "Cfg mismatch" Switch Status 

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

• N1500
• N2000/N2100
• N3000/N3100/N3000E-ON
• N4000 series

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

Solution

1. Confirm that all units are on the same firmware version.

2. 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.

3. Power off the unit in question

4. Run the following commands:

   Commands	Description
   show supported switchtype	This shows all models that could be in the stack- identify the number corresponding to the correct model
   conf	Configuration mode
   stack	Stack configuration mode
   no member	Removes all configuration of that unit number from the stack
   member	Add the unit back to the stack with the correct model number from the first command
   end	Exit con fig mode
   show switch	Verify resolution- "Cfg mismatch" should be replaced with "Ok"
   write	Save changes

5. 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.

6. Power on the switch member

7. Verify resolution and save changes