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VTY of AR28-40 creates user vty 1 4, and how to restore the default display mode of the system

Publication Date:  2012-07-27 Views:  326 Downloads:  0
Issue Description
Once VTY of AR28-40 creates user  vty  1 4 and user  vty  0 1, DISP CUR displays as:

user-interface vty 0 1                                                         

user-interface vty 2 4                                                         

 authentication-mode password


Alarm Information

Handling Process
Synchronize the configurations of USER VTY 0 to 4, and then the mode could be restored.

Root Cause
UNDO command cannot configure the data of USER VTY, so it cannot restore the system to original mode:

user-interface vty 0 4