Junos config mode — set, show candidate, commit

• Fundamentals
• Beginner
• 10 min
• 3 steps
• Junos-style

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Free · no install · no account

Scenario

Junos's two-phase commit is the operator-facing difference vs Cisco IOS. Changes don't take effect when typed — they accumulate in a *candidate configuration*. commit atomically swaps candidate to running. rollback discards the candidate (or rolls back N previous commits). In this lab jnx1 has a customer port ge-0/0/0 with no description. You'll add one, render the staged candidate, and commit it.

Topology

1 × router · Junos-style

• jnx1 — router

What you will do

1. Enter cfg mode with configure. Prompt changes from root@jnx1> to [edit]\nroot@jnx1#.

2. Stage a description on ge-0/0/0: set interfaces ge-0/0/0 description uplink-to-jnx2.

3. Apply the candidate with commit. The description lands in the running IR.

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This lab in other languages

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