Differentes manière "show commands" pour obtenir des infos sur le matériel Cisco

show version
- utilisée pour determiner quelle version de Cisco IOS a device is running
- mais aussi pour :

• ROM bootstrap
• uptime
• RAM quantity
• FLASH capacity
• Processor board ID (identique au serial number imprimé sur le sticker)

show module
- donne une liste de modules et les slots ou ils sont connecté
- retourne le :

• status
• model
• hardware address
• software / hardware
• serial number of each module / sub-module

show inventory
- récupère linformation Unique Device Identifier  (UDI)

- UDI consists of the following elements:

• Product identifier (PID)
• Version identifier (VID)
• Serial number (SN).

The PID is the name by which the product can be ordered; it has been historically called the “Product Name” or “Part Number.” This is the identifier that one would use to order an exact replacement part.
The VID is the version of the product. Whenever a product has been revised, the VID will be incremented. The VID is incremented according to a rigorous process derived from Telcordia GR-209-CORE, an industry guideline that governs product change notices.
The SN is the vendor-unique serialization of the product. Each manufactured product will carry a unique serial number assigned at the factory, which cannot be changed in the field. This is the means by which to identify an individual, specific instance of a product.

show diagbus
In order to find the serial number of port adapters that plug into the Flex WAN module, issue the show diagbus command from the MSFC command-line interface (CLI).

show idprom
In order to determine the serial number for the chassis and other components. This command has multiple parameter to issue in case that you want to restrict the information that is returned to you show idprom [parameter]. Some parameter option would be: backplane, fan-tray, module, interface and others which you can discover with well known help command show idprom ?