On other Junos OS platforms, you can get a summary of the firmware version on a device by issuing the show chassis firmware command. However, for the nfx-3 software, the command syntax is a little different.

Attempting to use the show chassis firmware command on NFX250-NG, which runs the nfx-3 software, results in the " error: command is not valid on the nfx250_s2_10_t " error.

This article explains how to determine firmware version for devices that run the nfx-3 software.

When issuing show chassis firmware on NFX250-NG, we get the following error message:

root> show chassis firmware
error: command is not valid on the nfx250_s2_10_t

On NFX devices that run the nfx-3 software architecture, the syntax to list firmware version has changed. The command syntax that is used now is:

show system inventory firmware

Example

root> show system inventory firmware
Inventory Firmware Information
------------------------------
BIOS Version:                     CBDE_SFP_00.21_01.01
CPLD Version:                     09.02
SSD Version:                      O0918B

NIC Firmware details
--------------------------
NIC type          Version
---------------- ---------
X552 NIC         0x80000534       
X553 NIC         N/A              
I350 Copper NIC  N/A              
I350 Fibre NIC   N/A              
82599 NIC 1      N/A              
82599 NIC 2      N/A               

Note: If you are running the nfx-2 software, the syntax is still show chassis firmware , which would be run from vJUNOS0.