R1_1841(config)#banner ?
LINE c banner-text c, where 'c' is a delimiting character
exec Set EXEC process creation banner
incoming Set incoming terminal line banner
login Set login banner
motd Set Message of the Day banner
prompt-timeout Set Message for login authentication timeout
slip-ppp Set Message for SLIP/PPP
R1(config)#banner motd $
Mantenimiento al router $
R1(config)#banner login $
Don’t mess around $
R1(config)#banner exec $
Welcome to our nice net