line vty 0 4 password 6Gu8z0s ! ! end R2 ! hostname R2 ! enable secret 67Hfc5z2 ! interface Ethernet0 ip address 172.16.28.98 255.255.255.0 ip helper-address 172.16.29.252 ! interface Serial0 ip address 172.16.27.99 255.255.255.0 ip helper-address 172.16.29.252 encapsulation frame-re...