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JUNOS Disable vs Deactivate interfaces

Confusing between disabling and deactivating interfaces on JUNOS is a common mistake that leads to all sorts of problems during implementing changes on live network boxes. Let’s look and clarify the differences quickly. Disabling an interface: Disabling an interface in JUNOS is equivlaent to interface shutdown in Cisco, it is going to take the interface administratevly down completely without impacting the configuration on that interface as you can see below. --- Interface in UP UP state [email protected]> show interfaces ge-0/0/0 terse Interface               Admin Link Proto    Local                 Remote ge-0/0/0                up    up ge-0/0/0.0              up    up   inet -- Disable the interface [email protected]> …

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