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EX 3200 - Junos Start up Problem

06.11.09   |  
‎06-11-2009 09:07 PM

One of my switch got problem ..switch unable to start and LCD panel only show "Loading junos..."


here what i capture using console cable


if_pfe_open: listener socket opened, listening on ...
Trying to mount root from ufs:/dev/da0s2a
WARNING: / was not properly dismounted
Attaching /packages/jbase via /dev/mdctl...
Mounted jbase package on /dev/md0...
Jan 13 14:58:03 init: login_getclass: unknown class 'daemon'
cd: can't cd to /etc/db/pkg
savecore: could not be determined
savecore: could not be determined
No dump exists
Automatic reboot in progressJWARNING: system watchdog timer still running,
         use '/sbin/watchdog -off' to disable
Enter full pathname of shell or 'recovery' for root password recovery or RETURN
for /bin/sh:



any suggestion?


below i attach u..the text file


Ethernet Switching

Re: EX 3200 - Junos Start up Problem

06.12.09   |  
‎06-12-2009 12:31 AM



It seems there is no external media installation software on the Juniper WEB site to repair an EX switch.


That would be fine if some Juniper Guys could post some advices here!


If no, You would only have to open a case; and I believe JTAC will be the only one, that will be able to help you.

Ethernet Switching
Accepted by topic author ChiPNuKe
‎08-26-2015 01:27 AM

Re: EX 3200 - Junos Start up Problem

06.15.09   |  
‎06-15-2009 01:07 PM



If you have the software of the EX3200 you can copy it on an usb-stick.  Reboot the switch and hit spacebar after you see hit space ...

You'll see loader>. 


type the following thing:

install --format file:///file-name


The switch will install the software again.  (I have only tested it on the Ex4200 but I think it's the same for the EX3200 series)

Ethernet Switching

Re: EX 3200 - Junos Start up Problem

06.15.09   |  
‎06-15-2009 06:28 PM

hi LA Thanks for your reply...just solve the problem yesterday..and ur correct.the way to solve is to load the software back

after update.... all the configuration still remind Smiley Very Happy



TQ very Much

Ethernet Switching

Re: EX 3200 - Junos Start up Problem

06.16.09   |  
‎06-16-2009 07:49 AM

Hi all


Here are the official links dealing with this subject and with the USB interface on the EX:


How to restore the software with the USB key:


And from the KB:


How to mont the usb interface and transfer some files: