Memanipulasi ToS ICMP & DNS di MikroTik

Tujuan :

• Memperkecil delay ping dari sisi klien ke arah Internet.

• Mempercepat resolving hostname ke ip address.

Asumsi : Klien-klien berada pada subnet 192.168.1.0/24

1. Memanipulasi Type of Service untuk ICMP Packet :
   > ip firewall mangle add chain=prerouting src-address=192.168.1.0/24 protocol=icmp action=mark-connection new-connection-mark=ICMP-CM passthrough=yes
   > ip firewall mangle add chain=prerouting connection-mark=ICMP-CM action=mark-packet new-packet-mark=ICMP-PM passthrough=yes
   > ip firewall mangle add chain=prerouting packet-mark=ICMP-PM action=change-tos new-tos=min-delay

2. Memanipulasi Type of Service untuk DNS Resolving :
   > ip firewall mangle add chain=prerouting src-address=192.168.1.0/24 protocol=tcp dst-port=53 action=mark-connection new-connection-mark=DNS-CM passthrough=yes
   > ip firewall mangle add chain=prerouting src-address=192.168.1.0/24 protocol=udp dst-port=53 action=mark-connection new-connection-mark=DNS-CM passthrough=yes
   > ip firewall mangle add chain=prerouting connection-mark=DNS-CM action=mark-packet new-packet-mark=DNS-PM passthrough=yes
   > ip firewall mangle add chain=prerouting packet-mark=DNS-PM action=change-tos new-tos=min-delay

3. Menambahkan Queue Type :
   > queue type add name=”PFIFO-64″ kind=pfifo pfifo-limit=64

4. Mengalokasikan Bandwidth untuk ICMP Packet :
   > queue tree add name=ICMP parent=INTERNET packet-mark=ICMP-PM priority=1 limit-at=8000 max-limit=16000 queue=PFIFO-64

5. Mengalokasikan Bandwidth untuk DNS Resolving :
   > queue tree add name=DNS parent=INTERNET packet-mark=DNS-PM priority=1 limit-at=8000 max-limit=16000 queue=PFIFO-64

6. Good Luck!!

sumber : http://mikrotik-id.blogspot.com/2007/08/load-balancing-fail-over-di-mikrotik.html