ASA-X serial number

Typically for a device we use show version to view the serial number. However, for some strange reason, in the ASA-X the number that is listed in the show version is not actually the serial number. If you try and open a TAC case that serial does not show up in TAC’s database. There is a parent serial number which you must provide. That number can be found with a show inventory.

ASA-CX#show version
Intercompany Media Engine         : Disabled       perpetual
IPS Module                        : Disabled       perpetual
Cluster                           : Disabled       perpetual

This platform has an ASA5525 VPN Premium license.

Serial Number: FCH1710****

ASA-CX#show inventory

Name: "Chassis", DESCR: "ASA 5525-X with SW, 8 GE Data, 1 GE Mgmt, AC"
PID: ASA5525           , VID: V01     , SN: FGL1711****

The serial number you would use to open a TAC case in this example would be FGL1711****

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