In the NFX Hardware portfolio, NFX-250 is the only platform that is capable of running either Non-NextGen (NFX-2) or NextGen (NFX-3) software. The other platforms run only the NextGen software.

This article helps users identify whether their NFX-250 platform is running NextGen or Non-NextGen software.

The following steps can help identify the NFX software family that is currently installed on your device:

1. If your NFX-250 device is running software earlier than Junos OS Release 19.1R1, it is Non-NextGen. The NextGen architecture for NFX-250 was made available from Junos OS Release 19.1R1. If the software that is currently running is Junos OS Release 19.1R1 or later, proceed to Step 2 .

2. From the default CLI, run the show chassis fpc pic-status command:

   1. If your device is running the NextGen code, you will see two FPCs as shown below, one in Slot-0 and one in Slot-1:

root@NextGen> show chassis fpc pic-status

Slot 0   Online       NFX250-S1
  PIC 0  Online       10x10/100/1000 Base-T-2x1G SFP-2x10G SFP+
Slot 1   Online       FPC
  PIC 0  Online       VSRX DPDK GE
  
root@NextGen>  

2. If your device is running the Non-NextGen code, this command will not work.

root@jdm> show chassis
               ^
syntax error, expecting <command>.

For in-depth comparison of CLI differences between NFX-2 and NFX-3 software, refer to  KB35695 - [NFX] CLI Syntax Differences Between nfx-2 and nfx-3 Software [juniper.net] .


Note:   The following is beyond the scope of this article. However, you may want to check the status of the FPC on your non-NextGen NFX-250 after the above exercise. Take the following steps:

1. Switch to the JCP CLI from the default JDM CLI:

   root@jdm>
   root@jdm> ssh vjunos0 
   root@jcp> 

2. Run the   ' show chassis fpc pic-status'   to view the FPC status:

   root@jcp> show chassis fpc pic-status 
   Slot 0   Online       (null)
     PIC 0  Online       10x10/100/1000 Base-T-2x1G SFP-
   root@jcp>

2021-08-15: Minor, non-technical edits.