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Locating the Serial Number on an EX4200 Switch or Component

If you are returning a switch or hardware component to Juniper Networks for repair or replacement, you must locate the serial number of the switch or component. You must provide the serial number to the Juniper Networks Technical Assistance Center (JTAC) when you contact them to obtain Return Materials Authorization (RMA).

If the switch is operational and you can access the CLI, you can list serial numbers for the switch and for some components with a CLI command. If you do not have access to the CLI or if the serial number for the component does not appear in the command output, you can locate the serial number ID label on the physical switch or component (see Figure 1).


If you want to find the serial number on the physical switch component, you will need to remove the component from the switch chassis, for which you must have the required parts and tools available.

Listing the Switch and Components Details with the CLI

To list the switch and switch components and their serial numbers, enter the following CLI command:

For information about the show chassis hardware command, see show chassis hardware.

Locating the Chassis Serial Number ID Label on an EX4200 Switch

EX4200 switches have serial number ID labels located on the rear panel of the chassis (see Figure 1).

Figure 1: Location of the Serial Number ID Label on an EX4200 SwitchLocation of the Serial Number ID Label on an EX4200 Switch

Locating the Serial Number ID Labels on FRUs in an EX4200 Switch

The power supplies, fan trays, and uplink modules installed in EX Series switches are field-replaceable units (FRUs).

For each of these FRUs, you must remove the FRU from the switch chassis to see the FRU’s serial number ID label.