Kindly find the below configuration from our ISP for cisco routing.
How to configure Mikrotik 751G Routre same config
Please help
Wan IP: 172.22.12.30 255.255.255.252
Public IP : X.X.X.X 255.255.255.252
interface vlan 1
description connected to LAN
ip address X.X.X.X 255.255.255.252
ip flow ingress
ip flow egress
ip route-cache flow
ip tcp adjust-mss 1300
exit
int f4
ip address 172.22.12.30 255.255.255.252
exit
ip route 0.0.0.0 0.0.0.0 172.22.12.29