Initial commands on every new GNS3 routers on my lab......
en
conf t
line vty 0 4
privilege level 15
no login
line vty 5 15
privilege level 15
no login
exit
no ip domain-lookup
line console 0
exec-timeout 0 0
logging synchronous
privilege level 15
exit
host xxxxx
no cdp log mismatch duplex
do wr mem
exit