Understand the Configuration Hierarchy in Juniper Junos

What is good in Juniper when doing a configuration is that you have a hierarchy, meaning that for example if you want to configure something related to the user, you can go to the user configuration hierarchy and from there you can do the commands that you wish to do such as creating a new user, deleting a user, giving permissions, etc.….

Let’s check this in a LAB directly.  I am still connected to the console port of the Juniper router.

Let’s go to the operational mode and write “configure” and see on which configuration hierarchy I am:

root@R1> configure

Entering configuration mode

[edit]

root@R1#

I am now on the “edit” configuration hierarchy which is the top configuration hierarchy on the Juniper Junos router.

From this configuration hierarchy, I wish to create a user and give him a permission.

root@R1# set system login user Jack authentication plain-text-password

New password:

Retype new password:

[edit]

root@R1#

root@R1# set system login user Jack class read-only

[edit]

root@R1# commit

commit complete

[edit]

root@R1#

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