I manage several EX series switches. I have been working on getting these to JTAC recommended versions.
This includes a few EX2200's. They're mostly running 15.1, but I have been slowly moving them to 12.3.
Most of these downgrades are completely fine. I install the update and schedule a reboot.
However, two of them are being difficult. I install Junos 12.3, which appears successful. I then reboot the switch, which takes over 30 minutes (abnormal even for these little switches).
After the reboot, they're still running 15.1, and I can't figure out why.
Does anyone have any suggestions on what I can try next?
I hope you're doing great.
I have seen such failure due to the login password format sha512 . since it is not supported in Junos 12.If you currently have that configuration please change it to sha1 or md5.
I am guessing that you got any kind of warning like this :
Validation failedERROR: Current configuration not compatible with /var/tmp/jinstall-ex-2200-12.3R12-S12-domestic-signed.tgzWARNING: Current configuration not compatible with /var/tmp/jinstall-ex-2200-12.3R12-S12-domestic-signed.tgz.
If that knob is not the culprit definitely there is something else in the current conf not supported in code 12.
For your reference check the link below :
If this solves your problem, please mark this post as "Accepted Solution" so we can help others too.
Looks like you're on to something!
I will try to downgrade overnight, and let you know how it goes
Yep, that was it! They've now been downgraded.