This KB is related to replace a switch in your Juniper Mist™ network from the switch.

The symptoms of issues related to replacing a switch in a Juniper Mist™ network can include:

Port Issues:

• Devices connected to ports on the new switch may fail to communicate if the port configurations are not applied correctly, especially if there are mismatched port types (e.g., MGE vs. GE).

Slow Network Performance:

• After the switch replacement, users may experience slower than normal network speeds if configurations are incomplete or incorrect.

Intermittent Connectivity:

• Devices may connect and disconnect sporadically if there are issues with the new switch's configuration or compatibility.

Error Messages:

• Log files may contain error messages indicating problems with the switch replacement, such as failed configurations or port mismatches.

1. Click Switches on the left navigation pane of the Mist portal.
2. On the list tab, click the switch that needs to be replaced.
   The switch details page appears.
3. Select the Replace Switch option from the Utilities drop-down list on the details.
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4. From the MAC Address of the unassigned switch drop-down list, select the MAC address of the unassigned switch. This is the replacement switch—the switch you will use to replace the switch that you selected in Step 2. If the Mist network doesn't include any unassigned switches, the Mist portal doesn't display unassigned switches. In that case, this drop-down list doesn't show any MAC addresses.
    
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   By default, Mist copies the configuration of the existing switch to the new switch. To discard any specific configurations that you don't want to copy to the new switch, select the appropriate check boxes on the Replace Switch window.

   If the new switch has a different number of ports than the switch being replaced, Mist discards the port configuration automatically. If the current switch template on the site doesn't cover the configuration requirement of your new switch, we recommend that you assign a different template. Assign your site a template with a configuration that meets the requirements of the new switch. See Configure Switches Using Templates.

5. Click Replace.
   When Mist replaces the switch, the new switch takes the place of the old switch on the Mist portal. The status of the old switch changes to Unassigned. You can view the old switch on the Inventory page.