1. Bwat file dengan nama multi-routing.sh dengan isi sbb:
#!/bin/sh
# Seting interface pertama:
EXT_IF1=eth0
# Gateway Interface pertama
EXT_ROUTER1=202.200.200.1
# IP Interface Pertama
EXT_IP1=202.200.200.20
# Seting interface kedua:
EXT_IF2=eth1
# Gateway Interface kedua
EXT_ROUTER2=190.0.0.1
# IP Interface kedua
EXT_IP2=190.0.0.5
# Seting RP_FILTER
RP_FILTER_DISABLE=1
# Seting IP dan Network LAN
INT_IP=192.168.0.1
INT_NET=192.168.0.0/24
# Check RP_FILTER
if [ "$RP_FILTER_DISABLE" == "1" ]; then
echo “Disabling RP_FILTER…”
echo “0″ >/proc/sys/net/ipv4/conf/$EXT_IF1/rp_filter
echo “0″ >/proc/sys/net/ipv4/conf/$EXT_IF2/rp_filter
fi
# Setup source IP routing rules untuk external interface 1
echo “Setup source IP routing untuk $EXT_IP1″
ip rule add from $EXT_IP1 lookup 1
ip route replace default via $EXT_ROUTER1 dev $EXT_IF1 table 1
ip route replace $INT_NET via $INT_IP table 1
# Setup source IP routing rules for external interface 2
echo “Setup source IP routing untuk $EXT_IP2″
ip rule add from $EXT_IP2 lookup 2
ip route replace default via $EXT_ROUTER2 dev $EXT_IF2 table 2
ip route replace $INT_NET via $INT_IP table 2
# Setup loadbalancing
echo “Enabling loadbalancing over $EXT_IF1 and $EXT_IF2″
ip route replace default equalize
nexthop via $EXT_ROUTER1 dev $EXT_IF1
nexthop via $EXT_ROUTER2 dev $EXT_IF2
# Flush route cache
ip route flush cache
# Return success
exit 0
2. Ubah hak akses file agar bisa di eksekusi
root@server:/home/pick# chmod +x /home/pick/multi-routing.sh
3. Jalanin dech file nya
root@server:/home/pick# /home/pick/multi-routing.sh
Disabling RP_FILTER…
Setup source IP routing untuk 202.200.200.20
Setup source IP routing untuk 190.0.0.5
Enabling loadbalancing over eth0 and eth1
4. Liat rule yg tlah di bikin
root@server:/home/pick# ip rule show
