RouterOS commands and scripts for failover setup + load-balancing using PCC

ip_dhcp-client.rsc

/ip dhcp-client
add interface=ether2 add-default-route=no script=""

# The following is the script used to automatically add and remove the gateway from the DHCP client
:if ($bound = 1) do={
  /ip route add dst-address=8.8.8.8 gateway=$"gateway-address" scope=10 comment="ether2 gateway"
} else={
  /ip route remove [find comment="ether2 gateway"]
}

ip_firewall.rsc

/ip firewall mangle
add chain=prerouting action=mark-connection new-connection-mark=ether1_conn connection-mark=no-mark in-interface=ether1
add chain=prerouting action=mark-connection new-connection-mark=ether2_conn connection-mark=no-mark in-interface=ether2
add chain=prerouting action=mark-connection new-connection-mark=ether1_conn connection-mark=no-mark in-interface=bridge dst-address-type=!local per-connection-classifier=both-addresses:2/0
add chain=prerouting action=mark-connection new-connection-mark=ether2_conn connection-mark=no-mark in-interface=bridge dst-address-type=!local per-connection-classifier=both-addresses:2/1
add chain=prerouting action=mark-routing new-routing-mark=to_ether1 connection-mark=ether1_conn in-interface=bridge
add chain=prerouting action=mark-routing new-routing-mark=to_ether2 connection-mark=ether2_conn in-interface=bridge
add chain=output action=mark-routing new-routing-mark=to_ether1 connection-mark=ether1_conn
add chain=output action=mark-routing new-routing-mark=to_ether2 connection-mark=ether2_conn

ip_routes.rsc

/ip routes
add dst-address=1.1.1.1 gateway=192.168.0.1 route=10 comment="ether1 gateway"
add distance=1 gateway=1.1.1.1 routing-mark=to_ether1 check-gateway=ping comment="ether1 main"
add distance=1 gateway=8.8.8.8 routing-mark=to_ether2 check-gateway=ping comment="ether2 main"
add distance=2 gateway=8.8.8.8 routing-mark=to_ether1 check-gateway=ping comment="ether1 failover"
add distance=2 gateway=1.1.1.1 routing-mark=to_ether2 check-gateway=ping comment="ether2 failover"