You need to configure interface ge-0/1/2 with an IP address of 172.16.100.1/24. You have accidentally entered 172.16.101.1/24 as shown in the exhibit. Which command should you issue to solve the…

The correct answer is C. [edit] user@router# rollback 0. In Junos OS, the command rollback 0 is used to revert any uncommitted changes in the candidate configuration, returning the configuration to its state before the uncommitted changes were made. Since the incorrect IP address (172.16.101.1/24) was added but not yet committed…

Configuration Basics

Question

You need to configure interface ge-0/1/2 with an IP address of 172.16.100.1/24. You have accidentally entered 172.16.101.1/24 as shown in the exhibit. Which command should you issue to solve the problem?

Exhibit

Options

A[edit] user@router# rollback 1
B[edit] user@router# rollback 2
C[edit] user@router# rollback 0
D[edit] user@router# rollback rescue

How the community answered

(20 responses)

A
10% (2)
B
5% (1)
C
85% (17)

Explanation

In Junos OS, the command rollback 0 is used to revert any uncommitted changes in the candidate configuration, returning the configuration to its state before the uncommitted changes were made. Since the incorrect IP address (172.16.101.1/24) was added but not yet committed, issuing rollback 0 will discard this change, allowing you to re-enter the correct IP address (172.16.100.1/24) without saving the incorrect configuration.

Topics

#rollback#candidate configuration#interface IP address#configuration correction

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