MikroTik Dual WAN PCC Load Balance & Failover

২টি WAN লাইনের সমপরিমাণ ট্রাফিক শেয়ারিং এবং অটোম্যাটিক গেটওয়ে ফেইলওভার স্ক্রিপ্ট।

# --- Firewall NAT ---
/ip firewall nat
add chain=srcnat out-interface=ether1-WAN1 action=masquerade
add chain=srcnat out-interface=ether2-WAN2 action=masquerade

# --- Mangle Rules ---
/ip firewall mangle
add chain=prerouting dst-address=192.168.88.0/24 action=accept
add chain=prerouting in-interface=ether1-WAN1 connection-state=new action=mark-connection new-connection-mark=WAN1_conn
add chain=prerouting in-interface=ether2-WAN2 connection-state=new action=mark-connection new-connection-mark=WAN2_conn
add chain=prerouting in-interface=bridge1 connection-state=new dst-address-type=!local per-connection-classifier=both-addresses-and-ports:2/0 action=mark-connection new-connection-mark=WAN1_conn
add chain=prerouting in-interface=bridge1 connection-state=new dst-address-type=!local per-connection-classifier=both-addresses-and-ports:2/1 action=mark-connection new-connection-mark=WAN2_conn
add chain=prerouting in-interface=bridge1 connection-mark=WAN1_conn action=mark-routing new-routing-mark=to_WAN1
add chain=prerouting in-interface=bridge1 connection-mark=WAN2_conn action=mark-routing new-routing-mark=to_WAN2

# --- Routes with Failover ---
/ip route
add dst-address=0.0.0.0/0 gateway=10.10.1.1 routing-mark=to_WAN1 check-gateway=ping distance=1
add dst-address=0.0.0.0/0 gateway=10.10.2.1 routing-mark=to_WAN2 check-gateway=ping distance=1
add dst-address=0.0.0.0/0 gateway=10.10.1.1 check-gateway=ping distance=1
add dst-address=0.0.0.0/0 gateway=10.10.2.1 check-gateway=ping distance=2