Silviu Mocanu

There are times when you have to use a USB stick to copy to or from it files to a Juniper router/switch. Fortunetly it will not be to very frequently, but there will be a time when you will need it. JunOS being a UNIX( FreeBSD ) based OS, you have to identify and mount the device attached. First, you have to check the device name, so you can identify it on /dev: smocanu@j2350> show log messages | match mass May 16 15:25:45  j2350 /kernel: umass0: Kingston DataTraveler SE9, rev 2.00/1.00, addr 2 May 16 15:25:46  j2350 /kernel: da0 at umass-sim0 bus 0 target 0 lun 0 Then you have to verify the partition number, usually it is the first one: smocanu@j2350> start shell % ls -las /dev/da0 /dev/da0 /dev/da0s1 Now you can mount your USB stick: % mkdir /var/tmp/usb % mount_msdosfs /dev/da0s1 /var/tmp/usb Once your USB stick is mounted, you can copy to/from it files, using /var/tmp/usb path. Do not forget that you have to umount the USB storage, before removing it fr

First at all you have to know that you should be able to login to a secondary node of a J/SRX cluster using OOB( out of band management interface - fxp0 ), but, if this is not possible you can do it from the primary node. In my case there is a cluster of SRX240H2. You have to login into the cluster and check the status of it: smocanu@srx240h2# run show chassis cluster status Cluster ID: 1 Node                  Priority          Status    Preempt  Manual failover Redundancy group: 0 , Failover count: 1     node0                   100         primary        no       no     node1                   1           secondary      no       no Redundancy group: 1 , Failover count: 2     node0                   100         secondary      no       no     node1                   1           primary        no       no {primary:node0}[edit] If you would like to login into the secondary node from the primary node, you have to make sure that FAB link(s) is/are up and then you have to ru

Lately some of my friends have decided that they will like to learn IT staff, and they have asked me a lot of things about operating systems and network protocols. So, I have decided to start this blog, in order to keep, into one place, some of the procedures/commands that I use on my job, so I can provide them to my friends and also to get back to check them, if needed . I'm not intending to explain the mechanism behind the scene, unless is necessary, because there are so many places where you can find it, but I will try to provide a reference link, whenever is possible, so you can check and analyze it further.