Description

This article describes how you can restore it back to SRX100H from an SRX100B by re-installing mem-upg license on CLI after zeroize a SRX100H

Symptoms

After executing zeroize on a SRX100H, the system will revert back to a SRX100B due to the licenses being deleted.
A change is introduced starting with 11.4R4, 12.1R2 and 12.1X44-D10, which is a ported fix of the PR737916 issue not deleting all data for EX-series products.

If you need to execute a zeroize on a SRX100H, the mem-upg license should be backed-up before executing the zeroize, this will allow you to restore your system when it reverts back to a SRX100B.

# Preparing zeroize

1. Confirm device model and mem-upg license 

root> show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis AU2311AF0227 SRX100H <<<<<<<<<<<<<<<<<<
Routing Engine REV 18 750-021773 AT2311AF0227 RE-SRX100H
FPC 0 FPC
PIC 0 8x FE Base PIC
Power Supply 0
root> show system license
License usage:
                    Licenses     Licenses     Licenses     Expiry
Feature name            used    installed       needed
dynamic-vpn                0            2            0     permanent
ax411-wlan-ap              0            2            0     permanent
mem-upg                    0            1            0     permanent  <<<<<<<<<<<<<<<<<<

Licenses installed:
  License identifier: JUNOS314112
  License version: 2
  Valid for device: AU2311AF0227
  Features:
    mem-upg          - Memory Upgrade
      permanent

2. Collect mem-upg license 
root> show system license keys


JUNOS314112 aeaqea qmifkt emzrgf aummbs gi3qma j4a4uf
            55pjz7 sa4mlk 52xciw u3osln oabujz zy3qb6
            pwjcnd dvuvfc 7wtlrw x6tdmo wa5fan q

# Executing zeroize
Once SRX100H boots up after zeroize, it box will reboot automatically due to no mem-upg license with following message. 

mem-upg license not present. System downgraded to low memory; System going down IMMEDIATELY.

# License recovery on CLI

After reverting back  to SRX100B, apply the mem-upg license key via the CLI manually, the system will then be restored back to an SRX100H.

1. Confirm device model and mem-upg license 

root> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                AU2311AF0227      SRX100B <<<<<<<<<<<<<<<<<<
Routing Engine   REV 18   750-021773   AT2311AF0227      RE-SRX100B
FPC 0                                                    FPC
 PIC 0                                                   8x FE Base PIC
Power Supply 0
root> show system license
License usage:
Licenses Licenses Licenses Expiry
Feature name used installed needed
dynamic-vpn 0 2 0 permanent
ax411-wlan-ap 0 2 0 permanent

Licenses installed: none

2. Apply mem-upg license on CLI 
root> request system license add terminal
[Type ^D at a new line to end input,
enter blank line between each license key]
add license complete (no errors)
root> request system license add terminal
[Type ^D at a new line to end input,
enter blank line between each license key]
JUNOS314112 aeaqea qmifkt emzrgf aummbs gi3qma j4a4uf
55pjz7 sa4mlk 52xciw u3osln oabujz zy3qb6
pwjcnd dvuvfc 7wtlrw x6tdmo wa5fan q
JUNOS314112: successfully added
add license complete (no errors)

root>
*** FINAL System shutdown message from root@ ***

System going down IMMEDIATELY


mem-upg license installed. System upgraded to high memory; System going down IMMEDIATELY.

After applying the mem-upg license, the system will reboot automatically, and boot up as a SRX100H


Solution

This change is introduced on 11.4R4, 12.1R2 and 12.1X44-D10.

Recover and restore/re-install the mem-upg license using the CLI manually