interface Tunnel0
ip address 172.16.1.100 255.255.255.0
no ip redirects
ip mtu 1400
ip nhrp authentication cisco
ip nhrp map multicast dynamic
ip nhrp network-id 10 ip nhrp redirect
ip summary-address eigrp 100 192.168.0.0 255.255.0.0
tunnel source FastEthernet1/0
tunnel mode gre multipoint
tunnel key 123456
tunnel protection ipsec profile cisco
end