Para suhu ogut ada script load balance di Mikrotik ver. 2.9.27 seperti ini :
/ ip address
add address=192.168.1.1/24 network=192.168.1.0 broadcast=192.168.1.255 interface=Local comment="" disabled=no
add address=192.168.10.2/24 network=192.168.10.0 broadcast=192.168.10.255 interface=modem1 comment="" disabled=no
add address=192.168.20.2/24 network=192.168.20.0 broadcast=192.168.20.255 interface=modem2 comment="" disabled=no
add address=192.168.30.2/24 network=192.168.30.0 broadcast=192.168.30.255 interface=modem3 comment="" disabled=no

/ ip firewall mangle
add chain=prerouting in-interface=Local connection-state=new nth=1,1,0 \
action=mark-connection new-connection-mark=odd passthrough=yes comment="" disabled=no
add chain=prerouting in-interface=Local connection-mark=odd action=mark-routing new-routing-mark=odd passthrough=no comment="" disabled=no

add chain=prerouting in-interface=Local connection-state=new nth=1,1,1 \
action=mark-connection new-connection-mark=even passthrough=yes comment="" disabled=no
add chain=prerouting in-interface=Local connection-mark=even action=mark-routing new-routing-mark=even passthrough=no comment="" disabled=no

add chain=prerouting in-interface=Local connection-state=new nth=1,1,2 \
action=mark-connection new-connection-mark=ind passthrough=yes comment="" disabled=no
add chain=prerouting in-interface=Local connection-mark=even action=mark-routing new-routing-mark=ind passthrough=no comment="" disabled=no

/ ip firewall nat
add chain=srcnat connection-mark=odd action=src-nat to-addresses=192.168.10.2 to-ports=0-65535 comment="" disabled=no
add chain=srcnat connection-mark=odd action=src-nat to-addresses=192.168.20.2 to-ports=0-65535 comment="" disabled=no
add chain=srcnat connection-mark=even action=src-nat to-addresses=192.168.30.2 to-ports=0-65535 comment="" disabled=no

/ ip route
add dst-address=0.0.0.0/0 gateway=192.168.10.1 scope=255 target-scope=10 routing-mark=odd comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=192.168.20.1 scope=255 target-scope=10 routing-mark=even comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=192.168.30.1 scope=255 target-scope=10 routing-mark=even comment="" disabled=no
add dst-address=0.0.0.0/0 gateway=192.168.10.1 scope=255 target-scope=10 comment="" disabled=no

Mohon koreksinya bila ada yang salah di routingan,nth ato di mananya?
soalnya kalo ogut ping ke ip publik telkomnya : 125.160.221.166 yang di jadikan primary routingnya hasilnya : ttl expired in transit, ogut baca di google katanya masalah di routingan, tetapi koneksi internet dari client udah jalan. Mohon Pencerahaannya... Tks