FPC X PEM X is not supported This message is most commonly associated with having one power supply that is front exhaust and another that is rear exhaust. What’s not in Juniper documentation is that this message is also associated with power supplies made by different manufacturers. To avoid this message use power supplies from […]

When trying to for an install (in this case a format install) of JunOS sometimes the following will occur while logged in as root: root@% install –format jinstall-YOURPACKAGE-signed.tgz /sbin/install: Permission denied. It will install correctly if install it from loader> prompt. You must have your USB drive connected before rebooting. Get there by hitting spacebar […]

Error upon commit (or commit check): warning: requires ‘bgp’ license This is letting you know that the Juniper device requires a special license for certain features. At the time of this post the going rate for a license for one 24-port EX4200 for one year is $2500 USD.  I was told that it’s an error […]

When trying to mount a USB thumb drive in a Juniper EX3200 switch I received the following error: root@:RE:0% mount -t msdos /dev/da1s1 /var/tmp/usb mount_msdosfs: /dev/da1s1: Invalid argument The file system was FAT and everything worked fine when mounted in my workstation.  I simply reformatted the FAT partition on my workstation and recopied the contents […]

Upon spending a lot of time trying to get a usb drive recognized on an EX2200 switch I tried again with a 32GB drive of the same manufacturer instead of the 64GB drive I had been using.  Worked like a charm.

Upon logging in to a switch you may get the following error (with the formatting changed for display purposes):   WARNING: THIS DEVICE HAS BOOTED FROM THE BACKUP JUNOS IMAGE It is possible that the primary copy of JUNOS failed to boot up properly, and so this device has booted from the backup copy. Please […]