The interface null command displays the Null interface view.
interface null 0
None
System view
2: Configuration level
There is only one Null interface, that is, Null 0. The Null 0 interface keeps Up all the time and cannot be deleted.
# Enter the view of the Null 0 interface.
<sysname> system-view [sysname] interface null 0 [sysname-NULL0]