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Different Configuration Modes in JUNOS

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There are different configuration modes in JUNOS you just have to look for them. It’s important to know the difference during candidate configuration. There are times multiple administrators could be working on the same are of configuration at the same time and changes could be overwritten.

Configuration types – In both JUNOS and IOS you will find that the ? key will show you all the different ways of configuring a router.

What to run to find this in the CLI:


[email protected]> configure ?
Possible completions:
<[Enter]> Execute this command
dynamic - Work in dynamic database
exclusive -Obtain exclusive lock (other users cannot make changes)
private -Work in private database (other's changes do not show)

dynamic – Work in dynamic database

[email protected]> configure dynamic
Configure Dynamic allows you to configure dynamic routing policies as specified in BGP - this is really useful for BGP and can only be used within this routing protocol.

exclusive -Obtain exclusive lock (other users cannot make changes)

[email protected]> configure¬†exclusive
Allows you to work exclusively in a within your configuration tree. This is really helpful in instances where you have multiple administrators configuring different parts of the router and want to make sure you changes (for instance in the system) are not overwritten by others - that are changing (for instance snmp).

private -Work in private database (other’s changes do not show)


[email protected]> configure private
This allows you to make changes to the configuration without other Admins seeing it until after it has been committed. I have never needed to use this feature - but it's good to know that it's there.

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