Cisco Catalyst 6840 Series - Finding the Serial Number

Finding the Serial Number
If you contact Cisco Technical Assistance, you need to know the switch serial number. The figure shows
where the serial number is located. You can also use the show version privileged EXEC command to see the
serial number.
Figure 41: Serial Number on the Chassis
Catalyst 6840-X Switch Series Hardware Installation Guide
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Troubleshooting
Finding the Serial Number