Dualwan Mikrotik ROS v7.1

Mikrotik ROS v7.1 и два провайдера.

Стартовые настройки
• Интерфейсы в провайдеров добавлены в интерфейс
лист WAN
• Развешаны IP
• Включен masquerading для WAN

# Базовые настройки:

/interface ethernet
set [ find default-name=ether1 ] comment=ISP1
set [ find default-name=ether2 ] comment=ISP2
/interface list
add name=WAN
/interface list member
add interface=ether1 list=WAN
add interface=ether2 list=WAN
/ip address
add address= interface=ether1
add address= interface=ether2
add address= interface=br-lan
/ip firewall nat
add action=masquerade chain=srcnat out-interface-list=WAN

Routing tables
# Создать дополнительные роутинг таблицы

/routing table add disabled=no fib name=rtab-1
/routing table add disabled=no fib name=rtab-2

Route defaults

# Добавить дефолты в новые таблицы

/ip route add distance=251 gateway=
/ip route add distance=252 gateway=
/ip route add gateway= routing-table=rtab-1
/ip route add gateway= routing-table=rtab-2

Маркировки (mangle)
# Добавить маркировки

/ip firewall mangle
add action=mark-connection chain=prerouting connection-mark=no-mark in-interface=ether1 new-connection-mark=con-isp1 passthrough=yes
add action=mark-connection chain=prerouting connection-mark=no-mark in-interface=ether2 new-connection-mark=con-isp2 passthrough=yes
add action=mark-routing chain=prerouting connection-mark=con-isp1 in-interface-list=!WAN new-routing-mark=rtab-1 passthrough=yes
add action=mark-routing chain=prerouting connection-mark=con-isp2 in-interface-list=!WAN new-routing-mark=rtab-2 passthrough=yes
add action=mark-routing chain=output connection-mark=con-isp1 new-routing-mark=rtab-1 passthrough=yes
add action=mark-routing chain=output connection-mark=con-isp2 new-routing-mark=rtab-2 passthrough=yes

При таких маркировках будут работать оба провайдера.
DST-NAT так же будет работать

Route Recursive failover
# Отказоустойчивость через рекурсивные маршруты

/ip route
add distance=251 gateway=
add distance=252 gateway=
add gateway= routing-table=rtab-1
add gateway= routing-table=rtab-2
add dst-address= gateway= scope=11
add dst-address= gateway= scope=11
add check-gateway=ping distance=10 gateway= targetscope=11
add check-gateway=ping distance=20 gateway= targetscope=11

Route recursive

Route recursive. Fail ISP1

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