Replacing Dead Switch in Switch Stack

[levi-from-downtown]

I have a switch that is toast and needs to be replaced. It is module 4 out of 6. When I run a show switch I can only see 5 active switches and the one for number 4 says "provisioned"

My question is if I slide the broken unit out and replace with an identical model, do I need to do any additional switch configs or will the stack recognize the replacement as blade 4 and install the config? 

[levi-from-downtown]

Sorry, I forgot to include that it is a C9300-48UXM being replaced. 

[Reza Sharifi · Accepted solution]

Hi,

1-Upgrade the new switch to whatever version is running on the stack

2-Make sure the new switch has the same license level as the stack

3-Provision the switch and configure it with the same priority as the bad one

4-Unplug the stack cable and power cord from the bad switch 

5-Add the new switch to the stack, connect the stack cables, and finally turn on the switch.

Ensure you do this in a maintenance window, just in case.

HTH

[levi-from-downtown]

Beautiful. This was very helpful. Thank you Reza! 

[levi-from-downtown]

Coming back to update that your steps worked flawlessly and I was able to swap the device in a live environment. The stack didn't go down and the replacement switch was accepted / kept config. 

Thank you again! 

[Reza Sharifi]

Thanks for the update

I am glad to know the steps worked as expected.

Good luck!

[bhowvghq]

I was in somewhat same situation and luckily this solution worked for me as well. Now I have no such problem and I can easily access my site. Otherwise it was headache.