After recovering from a bad upgrade by reinstalling clean from usb, EX3400 standalone (new install) can't reach login: prompt from serial console.
Seems like I am missing something simple as all the ports are active. Couldn't find any solutions in my searching. Hoping someone has seen this before.
Full details:
I ran an upgrade on my EX3400 switch (new switch, was setting up first time) using
request system software add /tmp/usb/junos-arm-32-18.2R3.4.tgz
which failed because the configuration didnt match this version. I looked that up and found a thread stating this was a problem introduced in version 17 for certain configs and I could use the `no-validate` option to ignore. I tried that, install worked, but caused a kernel panic on restart (hindsight tells me I should have been more careful with this).
So I went ahead and followed the steps to recover here (usb boot): https://kb.juniper.net/InfoCenter/index?page=content&id=KB31265&actp=METADATA
Worked great, rebooted and no kernel panic. I tried this with an 18.x version, got the no serial console login prompt issue.
So, I decided to reinstall to the original version as well just for sanity, 15.1X53-D55.5.
Still got the no login prompt when connected to serial console. I am certain my serial console is fine because it logs output right up untill here every time I reboot.
I tried running a factory-reset on config by holding the reset button on the front, no luck.
Last few lines of output always look ike this:
Starting casperd.
Starting jlaunchhelperd.
/etc/rc: WARNING: run_rc_command: cannot run
kern.rtc_retries: 0 -> 5
Starting cron.
Thu Jan 1 00:02:18 UTC 1970
Can't interact with console at all from here. Enter does nothing nor does pressing any combination of keys I could think of. My other switch shows `FreeBSD/arm (TEST) (ttyu1)` right after this and then the login prompt which this switch never reaches.