I need to replace a failed Catalyst 3850 stack member and after reviewing this documentation https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/37e/consolidated_guide/b_37e_consolidated_3850_cg/b_37e_consolidated_3850_cg_chapter_01001110.html, I have multiple questions.
Just to summarize, the failed stack member is going to be replaced with an identical model 3850. I won't know the IOS version until I receive it, but the other members are currently running 03.07.05E
I don't need to make any changes to the Active and Standby Stack. The priorities on those switches are already configured so I am not concerned about any re-election process. I won't be renumbering any member switches.
I also don't want to reboot the stack. The failed switch will not be re-used and is going to be sent back for an RMA. This is just simple "one-for-one" swap.
If I am missing some steps, let me know.
The procedure as I understand it is as follows:
- Power on replacement switch
- Power cable should be independent of anything powering the stack.
- Only a console cable should be connected to the replacement switch
- Make sure it passes POST.
- Do I need to go thru Express Setup? https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/hardware/quick/guide/cat3850_gsg.html#55226
- Is Express Setup needed before I can run any show commands such as "show switch" or "show version"?
- Priority should be "1" and "install mode" is the default, correct?
- For offline configuration, on the replacement switch, do I need to run "(config)# switch 1 provision WS-3850-XXXXXX" if the model that I am replacing is the same and the priority number will be the same? Am I confused and this command needs to be run on the Active switch and not the replacement switch?
- Is anything else needed on the replacement switch before it's powered off such as "copy running-config startup-config"?
- Power off replacement switch
- Remove failed switch
- Power off the failed switch by removing AC power cord(s) and StackPower cables
- Remove StackWise cables
- From the Active switch, do I need to run "(config)# no switch 1 provision WS-3850-XXXXXX"? What does this command do? Would this be needed if I am going to install a replacement switch where I expect it to be exactly the same as the failed switch?
- Once the failed switch is completely removed, do I run "(config)# switch 1 provision WS-3850-XXXXXX" from the Active switch?
- Install replacement switch
- Rack the new replacement switch without any power cables attached
- Install StackWise cables first
- Install StackPower cables second
- Once powered on, if the IOS version is not the same as the rest of the stack, this should trigger auto-advise since auto upgrade is disabled. On the Active switch run "software auto-upgrade enable" Will this command work for upgrading or downgrading the IOS version? Once completed, do I need to run "no software auto-upgrade enable?"
- Do I need to run "copy running-config startup-config" after this?
- The configuration should transfer from the stack to the replacement switch, correct? I don't need to manually copy the running-config from the Active switch?
- Verification
- Various verification commands can be run such as "show switch" "show switch detail" "show switch stack-ports" "show switch stack-ring speed"