This article will explain the step by step instruction for upgrading Junos on QFX-10008 and QFX-10016 switches with dual routing-engines
Junos upgrade on QFX-10008 and QFX-10016 switches with Dual RE
1) Copy Junos file onto both Routing Engines of target QFX
On target QFX:
- Perform checksum on Junos files
2) Before you install the new installation package, back up your current configuration files because the upgrade process removes all of the stored files on the switch. Log onto the router and start logging the SecureCRT session to a backup file then do:
show configuration | display set | no-more
OR
user@switch# save filename
Executing this command saves a copy of your configuration files to a remote location such as an external USB device.
3) Break GRES and then Upgrade Backup Routing-Engine:
On Master Routing-Engine:
edit
delete protocols pim nonstop-routing disable
deactivate chassis redundancy graceful-switchover
deactivate routing-options nonstop-routing
deactivate system commit synchronize
commit check
commit synchronize and-quit
Logon to Backup Routing-Engine and upgrade to <Required Junos>
request routing-engine login other-routing-engine
set cli screen-length 0
request system software add no-validate /var/tmp/<Junos Package>
request system reboot
Wait for Backup RE to reboot then check to ensure it got upgraded successfully:
show version invoke-on all-routing-engines
4) Switch Master RE roles
From Master RE:
request chassis routing-engine master switch
**NOTE: When there is a master switch happened, the FPCs get disconnected and reconnect to the next available RE. All Line cards go through a reboot during this step and causes about a 5-7 mins outage
5) Upgrade "New" Backup Routing-Engine:
Logon to Backup Routing-Engine and upgrade the Junos
Check backup RE is running on upgraded Junos:
6) Enable GRES:
set protocols pim nonstop-routing disable
activate chassis redundancy graceful-switchover
activate routing-options nonstop-routing
activate system commit synchronize
For more details regarding this, refer below document:
https://www.juniper.net/documentation/us/en/software/junos/junos-install-upgrade/topics/topic-map/install-software-on-qfx.html#d42e549