JUNOSe 9.1.x Command Reference Guide A to M > I Commands > ip alwaysup

ip alwaysup

Description: 

Forces the interface to appear as if it is up, regardless of the state of the lower layers. Use this command to reduce route topology changes when the network attached to this link is single-homed. The no version makes the interface appear in its current state.

Syntax: 

[ no ] ip alwaysup

Mode(s): 

Interface Configuration, Subinterface Configuration

    Release Information    Command introduced before JUNOSe Release 7.1.0.