Код: Выделить всё
/ip firewall mangle
0 chain=input action=mark-connection new-connection-mark=ISP-1_connection passthrough=yes connection-state=new in-interface=ISP-1
1 chain=input action=mark-connection new-connection-mark=ISP-2_connection passthrough=yes connection-state=new in-interface=ISP-2
2 X chain=input action=mark-connection new-connection-mark=ISP-3_connection passthrough=yes connection-state=new in-interface=ISP-3
3 chain=output action=mark-routing new-routing-mark=to_ISP-1 passthrough=yes connection-mark=ISP-1_connection
4 chain=output action=mark-routing new-routing-mark=to_ISP-2 passthrough=yes connection-mark=ISP-2_connection
5 X chain=output action=mark-routing new-routing-mark=to_ISP-3 passthrough=yes connection-mark=ISP-3_connection
6 X chain=prerouting action=mark-connection new-connection-mark=ISP-3_connection passthrough=yes connection-state=new dst-address-type=!local src-address-list=Local_NAT_Networks per-connection-classifier=src-address-and-port:3/0
7 chain=prerouting action=mark-connection new-connection-mark=ISP-2_connection passthrough=yes connection-state=new dst-address-type=!local src-address-list=Local_NAT_Networks per-connection-classifier=src-address-and-port:2/1
8 chain=prerouting action=mark-connection new-connection-mark=ISP-1_connection passthrough=yes connection-state=new dst-address-type=!local src-address-list=Local_NAT_Networks per-connection-classifier=src-address-and-port:2/0
9 chain=prerouting action=mark-routing new-routing-mark=to_ISP-1 passthrough=yes src-address-list=Local_NAT_Networks connection-mark=ISP-1_connection
10 chain=prerouting action=mark-routing new-routing-mark=to_ISP-2 passthrough=yes src-address-list=Local_NAT_Networks connection-mark=ISP-2_connection
11 X chain=prerouting action=mark-routing new-routing-mark=to_ISP-3 passthrough=yes src-address-list=Local_NAT_Networks connection-mark=ISP-3_connection
/ip firewall nat
0 chain=srcnat action=masquerade out-interface=!LocalLAN
/ip firewall address-list
0 list=Local_NAT_Networks address=10.0.0.0/24
/ip route
0 A S dst-address=0.0.0.0/0 gateway=WhiteIP-GW2 gateway-status=WhiteIP-GW2 reachable ISP-2 check-gateway=ping distance=2 scope=30 target-scope=10 routing-mark=to_ISP-2
1 S dst-address=0.0.0.0/0 gateway=WhiteIP-GW2 gateway-status=WhiteIP-GW2 reachable ISP-2 check-gateway=ping distance=3 scope=30 target-scope=10 routing-mark=to_ISP-2
2 A S dst-address=0.0.0.0/0 gateway=WhiteIP-GW1 gateway-status=WhiteIP-GW1 reachable ISP-1 check-gateway=ping distance=1 scope=30 target-scope=10 routing-mark=to_ISP-1
3 S dst-address=0.0.0.0/0 gateway=WhiteIP-GW1 gateway-status=WhiteIP-GW1 reachable ISP-1 check-gateway=ping distance=2 scope=30 target-scope=10 routing-mark=to_ISP-1
4 X S dst-address=0.0.0.0/0 gateway=WhiteIP-GW2 gateway-status=WhiteIP-GW2 inactive check-gateway=ping distance=4 scope=30 target-scope=10 routing-mark=to_ISP-3
5 X S dst-address=0.0.0.0/0 gateway=WhiteIP-GW2 gateway-status=WhiteIP-GW2 inactive check-gateway=ping distance=3 scope=30 target-scope=10 routing-mark=to_ISP-3
6 A S dst-address=0.0.0.0/0 gateway=WhiteIP-GW1 gateway-status=WhiteIP-GW1 reachable ISP-1 check-gateway=ping distance=2 scope=30 target-scope=10
7 S dst-address=0.0.0.0/0 gateway=WhiteIP-GW2 gateway-status=WhiteIP-GW2 reachable ISP-2 check-gateway=ping distance=3 scope=30 target-scope=10
8 X S dst-address=0.0.0.0/0 gateway=WhiteIP-GW2 gateway-status=WhiteIP-GW2 inactive check-gateway=ping distance=4 scope=30 target-scope=10

Если есть знатоки или просто понимающие люди прошу подсказки..
P.S.: просьба не задавать вопросов типа: "не проще ли объединить каналы на стороне провайдера?", такой возможности, к сожалению нет.. такая у нас ситуация..(