interface Loopback0
 ip address 1.1.1.1 255.255.255.255

privilege exec level 1 clear line

ip host R1 2001 1.1.1.1
ip host R2 2002 1.1.1.1
ip host R3 2003 1.1.1.1
ip host R4 2004 1.1.1.1
ip host R5 2005 1.1.1.1
ip host R6 2006 1.1.1.1
ip host R7 2007 1.1.1.1


alias exec C1 clear line 1
alias exec C2 clear line 2
alias exec C3 clear line 3
alias exec C4 clear line 4
alias exec C5 clear line 5
alias exec C6 clear line 6
alias exec C7 clear line 7

line 1 7
 no exec
 transport input telnet
 stopbits 1