Juniper Configuration Statement Hierarchy

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Configuration Statement Hierarchy
The Junos OS configuration consists of a hierarchy of statements. There are two types of statements:

Container statements, which are branches that can contain other statements (including additional container statements or leaf statements). Container statements at the top of the hierarchy are considered to be the trunk of the hierarchy tree.

Leaf statements (contained by container statements), which do not contain other statements.
The following is the example for Edit system hierarchy level

system {
backup-router address <destination destination-address>;
domain-name <domain-name>; 
host-name <host-name>; 
}
name-server {
<address>; 
}
root-authentication {
(encrypted-password "password" | plain-text-password);
}
}        

Please check this for complete juniper Configuration Statements Hierarchy
Supported Commands

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