PCC Metodu ile İnternet Yük Dengeleme

Şayet iki servis sağlayıcı kullanıyorsanız, pcc metodu ile Mikrotik cihazlarınızda yük dengeleme yaparak yerel ağınızdaki istemcilere daha verimli bir bant genişliği sağlayabilirsiniz.

Yukarıda bulunan örnek topoloji üzerinden gidersek:

/ip address
add address=192.168.88.1/24 network=192.168.88.0 broadcast=192.168.88.255 interface=Local
add address=192.168.10.2/24 network=192.168.10.0 broadcast=192.168.10.255 interface=WAN1
add address=192.168.20.2/24 network=192.168.20.0 broadcast=192.168.20.255 interface=WAN2

Cihazı dns sunucusu olarak kullanalım:

/ip dns set allow-remote-requests=yes cache-max-ttl=1w cache-size=5000KiB max-udp-packet-size=512 servers=8.8.4.4,8.8.8.8

Paketleri işaretlemek ve yönlendirmek için mangle kurallarına ihtiyacımız var.

/ip firewall mangle
add chain=input in-interface=WAN1 action=mark-connection new-connection-mark=WAN1_conn
add chain=input in-interface=WAN2 action=mark-connection new-connection-mark=WAN2_conn
add chain=output connection-mark=WAN1_conn action=mark-routing new-routing-mark=to_WAN1
add chain=output connection-mark=WAN2_conn action=mark-routing new-routing-mark=to_WAN2
add chain=prerouting dst-address=192.168.10.0/24 action=accept in-interface=Local
add chain=prerouting dst-address=192.168.20.0/24 action=accept in-interface=Local
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses-and-ports:2/0 action=mark-connection new-connection-mark=WAN1_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses-and-ports:2/1 action=mark-connection new-connection-mark=WAN2_conn passthrough=yes
add chain=prerouting connection-mark=WAN1_conn in-interface=Local action=mark-routing new-routing-mark=to_WAN1
add chain=prerouting connection-mark=WAN2_conn in-interface=Local action=mark-routing new-routing-mark=to_WAN2

Son olarak routing mark ile birlikte yeni route tanımlarını işledikten sonra ağımızı maskeleyelim.

/ip route
add dst-address=0.0.0.0/0 gateway=192.168.10.1 routing-mark=to_WAN1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=192.168.20.1 routing-mark=to_WAN2 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=192.168.10.1 distance=1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=192.168.20.1 distance=2 check-gateway=ping
/ip firewall nat
add chain=srcnat out-interface=WAN1 action=masquerade
add chain=srcnat out-interface=WAN2 action=masquerade

Hepsi bu kadar. Örnekte iki internet devresi var. Ama ikiden fazla kullanılıp kuralları buna göre revize edebilirsiniz.