Today we’ll go over a very basic JUNOS configuration, we will configure the hostname, user account, IP addresses and a default route. The purpose of this article is to provide a look and feel for JUNOS.

First let’s login and take care of the basics:

root> configure
[edit]
root# set system host-name Olive1
[edit]
root# set system login user colby class super-user authentication plain-text-password
New password:
Retype new password:
[edit]
root# commit and-quit
commit complete
Exiting configuration mode

This is a simple config, we enter configuration mode, we set the hostname of the router then we configure a user named “colby” in the “super-user” class. “Super-user” is a pre-defined class in JUNOS, this class has full control of the router.

Anyone familiar with IOS can see that this is pretty different. The commands all start with “set” and they can be quite a bit longer. Let’s take a look at the hierarchical view of what we just did:

system {
    host-name Olive1;
    login {
        user colby {
            uid 2000;
            class super-user;
            authentication {
                encrypted-password "$1$IKhmMCbo$XNAWMDS"; ## SECRET-DATA
            }
        }
    }
}

Definitely not what I’m used to, but not so bad. Now we’ll configure the same thing with multiple commands from the hierarchy:

Read more...