One of a switch in a stack is frozen

[Campbell541]

I have a stack of 3750 switches, which have 5 switches in it. One of the switches (switch 4) in the stack is frozen. The way I can tell is because all the lights on the switch are turned on, and I cannot toggle using the mode button in the switch. Also, when I used the command:

#sh switch detail
Switch#  Role   Mac Address     Priority Version  State
----------------------------------------------------------
*1       Master xxxx.xxxx.xxxx     15     0       Ready
 2       Member xxxx.xxxx.xxxx     14     0       Ready
 3       Member xxxx.xxxx.xxxx     1      0       Ready
 4       Member 0000.0000.0000     0      0       Provisioned
 5       Member xxxx.xxxx.xxxx     1      0       Ready

The switch that is frozen is saying provisioned. How can I fix this? Can I just go ahead and reload this switch in the stack using #slot 4 reload? Can doing so effect any configs in the master switch?

[00uv35592KJPaMPEN5d6]

One switch in the stack becomes the master that does all “management tasks” for the stack. All other switches are members. If the master fails, another member will become the new master.

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[balaji.bandi]

I do not see whole stack get effected to fix the issue.

2 Option -

Options 1

switch 4 remove the power and put it back and check if the switch 4 joined the stack.

Options 2 :

reload only stack member - reload slot stack-member-numbe  (reload slot 4 in your case)  - since you mentioned frozen may not work, but you can try.

[Kinyons]

Reloaded the switches yet some in the stack are not "ready" but are instead "provisioned". What gives? Have a tech going out on site now to physically reboot these switches but I'm curious as to why they're not booting properly.

PayGOnline

[Ernest23]

If you're concerned about future crashes then configure syslog to capture all of your logging output so it's not lost when the switches reboot.

FirstCallOnline

[Dyson_5]

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[Sterrett25]

Thanks

[krogerfeedback-help]

It seems like the switch in slot 4 of your 3750 stack is stuck in a provisioned state, indicating that it may not be properly participating in the stack. Here's how you can troubleshoot and potentially resolve the issue:

1. Check Physical Connections: Ensure that the switch in slot 4 is securely connected to the stack and that there are no loose cables or physical issues causing the problem. Sometimes, a poor connection can prevent a switch from joining the stack properly.

2. Power Cycle the Switch: Try power cycling the switch in slot 4 by unplugging its power cable, waiting for a few seconds, and then plugging it back in. This may help reset the switch and allow it to rejoin the stack properly.

3. Reload the Switch: If power cycling doesn't resolve the issue, you can try reloading the switch in slot 4 using the reload command. However, before doing so, make sure to save any important configurations or changes on the switch, as reloading it will cause it to reboot and potentially lose unsaved changes.

   arduinoCopy code

   switch 4 reload

   Reloading the switch should not affect configurations on the master switch or other members of the stack, as each switch in the stack maintains its own configuration independently.

4. Monitor Stack Status: After reloading the switch, monitor the output of the show switch detail command to verify that the switch in slot 4 rejoins the stack and transitions to a "Ready" state. If it continues to remain provisioned or encounters errors, further troubleshooting may be necessary.

If reloading the switch does not resolve the issue or if you encounter any errors during the process, it may be helpful to consult Cisco documentation or contact Cisco support for assistance with troubleshooting and resolving stack-related issues.

[Jusing]

It seems like the switch in slot 4 is indeed frozen and showing as "Provisioned" in the switch stack. This indicates that the switch is not functioning properly and may need a reload.

Yes, you can try to reload the switch in slot 4 using the `reload` command. However, before doing so, you might want to check if there are any specific configurations or services running on that switch that might be affected by the reload.

To check the configuration of the switch in slot 4, you can use the following command:

```
show run switch 4
```

This command will display the running configuration of the switch in slot 4. Make sure to review this configuration to see if there are any specific settings that you need to preserve or if there are any potential issues.

Once you've reviewed the configuration and ensured that it's safe to proceed with the reload, you can reload the switch using the following command:

```
reload slot 4
```

This command will reload the switch in slot 4. After the reload, monitor the switch to see if it comes back online properly and if the issue with it being frozen is resolved.

Keep in mind that reloading a switch can temporarily disrupt network connectivity, so it's best to perform this action during a maintenance window or during a time when network downtime can be tolerated. Additionally, it's always a good idea to have a backup of the switch configuration before performing any major changes or reloads.

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