How to Identify the Serial Number of a Cisco Router

BD.

The two commands that can be used to identify the serial number of a Cisco router are "show inventory" and "show version."

• "show inventory" command provides a detailed inventory of the hardware installed on the router, including the serial number. The output displays the part number, description, and serial number of each module or component.

Example output:

yamlCopy code
Router# show inventory NAME: "Chassis", DESCR: "                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Cisco 2901 chassis" PID: CISCO2901/K9, VID: V02, SN: FTX1524GA8X  NAME: "C3900-SPE100/K9", DESCR: "                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Cisco Services Performance Engine 100 for                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Cisco 3900 ISR" PID: C3900-SPE100/K9, VID: V03, SN: FOC15231QFW  NAME: "PVDM3 DSP DIMM with 32 Channels on Slot 0 SubSlot 4", DESCR: "PVDM3 DSP DIMM with 32 Channels" PID: PVDM3-32, VID: V01, SN: FOC15180LJV 

• "show version" command displays information about the router, including the IOS version, hardware model, and serial number.

Example output:

vbnetCopy code
Router# show version                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.4(3)M, RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2016 by                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Cisco Systems, Inc. Compiled Thu 28-Jul-16 00:30 by prod_rel_team  ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1)  Router uptime is 1 hour, 35 minutes System returned to ROM by power-on System image file is "flash0:c3900-universalk9-mz.SPA.154-3.M.bin"  This product contains cryptographic features and is subject to United States and local country laws governing import, export, transfer and use. Delivery of                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption. Importers, exporters, distributors and users are responsible for compliance with U.S. and local country laws. By using this product you agree to comply with applicable laws and regulations. If you are unable to comply with U.S. and local laws, return this product immediately.  A summary of U.S. laws governing                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           Cisco cryptographic products may be found at: http://www.cisco.com/wwl/export/crypto/tool/stqrg.html  If you require further assistance please contact us by sending email to export@cisco.com.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Cisco CISCO2901/K9 (revision 1.0) with 487424K/36864K bytes of memory. Processor board ID FTX1524GA8X 

Therefore, the correct answers are B. show inventory and D. show version.