Исправления такие:
interface Ethernet0/1
no ip address 217.27.152.19 255.255.255.248 secondary no ip default-gateway 217.27.152.17
no ip nat pool net-18 217.27.152.18 217.27.152.18 prefix-length 30
no ip nat pool net-19 217.27.152.19 217.27.152.19 prefix-length 30
no ip nat inside source route-map 18-map pool net-18 overload
no ip nat inside source route-map 19-map pool net-19 overload
no ip nat inside source static 192.168.10.2 217.27.152.18 extendable
ip nat pool net-18 217.27.152.18 217.27.152.18 prefix-length 29
ip nat pool net-19 217.27.152.19 217.27.152.19 prefix-length 29
ip nat inside source li 1 pool net-18 overload
ip nat inside source li 2 pool net-19 overload
ip nat inside source static 192.168.10.2 217.27.152.18 extendable
route-map 18-map permit 10
no set ip next-hop 217.27.152.18
route-map 19-map permit 10
no set ip next-hop 217.27.152.19
И еще acl должны быть разные, иначе смысла в них нету...