Disabling a Logical Interface

You can unconfigure a logical interface, effectively disabling that interface, without removing the logical interface configuration statements from the configuration. To do this, include the disable statement:

disable;

You can include this statement at the following hierarchy levels:

[edit interfaces interface-name unit logical-unit-number]
[edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number]

When an interface is disabled, a route (pointing to the reserved target “REJECT”) with the IP address of the interface and a 32–bit subnet mask is installed in the routing table. See Routing Protocols.