R1
key chain AUTH_ISIS
key 2
key-string C1sco!
exit
int range et0/0 , et1/0
isis authen key-chain AUTH_ISIS
ip isis
isis metric 15
Copy run start
R2
key chain AUTH_ISIS
key 2
key-string C1sco!
exit
int range et0/0 , et1/0
isis authen key-chain AUTH_ISIS
ip isis
isis metric 20
Copy run start
R3
key chain AUTH_ISIS
key 2
key-string C1sco!
exit
int range et0/0 , et1/0
isis authen key-chain AUTH_ISIS
ip isis
isis metric 25
Copy run start