Tutorial Load Balancing With Fail Over menggunakan Mikrotik 2.9.6 Husam Suhaemi ([email protected]) Pengantar Sesuaikan skenario dengan yang anda hadapi. Baca dahulu dengan teliti. Diasumsikan server Mikrotik memiliki 3 (tiga) buah interfaces (NIC) dan dalam kondisi fresh install. Skenario: 1. ISP Telkom-Speedy (ADSL) IP Router ADSL(LAN): 192.168.0.254 IP DNS1: 202.134.0.155 IP DNS2: 202.134.2.5 2. ISP Diginet (Wireless) IP: 203.81.187.62 IP Gateway: 203.81.187.62 IP DNS1: 203.81.185.12 IP DNS2: 203.81.185.13 Jumlah Komputer Internet: 50 pc --> Network: 192.168.3.0/26 (Ip Address: 192.168.3.1 - 192.168.3.63 Netmask: 255.255.255.192) Jumlah Komputer Games: 50 pc --> Network: 192.168.3.64/26 (Ip Address: 192.168.3.65 - 192.168.3.128 Netmask: 255.255.255.192) Skema Network: Diginet---,

,---Speedy | | | | 203.81.187.62(ether2) 192.168.0.253(ether1) [M i k r o t i k 2 . 9 . 6] 192.168.3.254/24 (ether3) | | 192.168.3.0/24 | | Games: Internet: 192.168.3.64/26 192.168.3.0/26

Langkah-langkah: 1. Beri nama Interfaces Ether1-3 di [Interfaces] Command: /interface set ether1 name=Telkom /interface set ether2 name=Diginet /interface set ether3 name=Local [email protected]] > interface print Flags: X - disabled, D - dynamic, R - running # NAME TYPE RX-RATE TX-RATE 0 R Telkom ether 0 0 1500 1 R Diginet ether 0 0 1500 2 R Local ether 0 0 1500 http://suhaemi.tk

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Tutorial Load Balancing With Fail Over menggunakan Mikrotik 2.9.6 Husam Suhaemi ([email protected]) 2. Beri IP Address untuk masing-masing ethernet. [Ip - Interfaces] Command: /ip address add address=192.168.0.253/24 interface=Telkom /ip address add address=203.81.187.62/24 interface=Diginet <--- karena gak tahu netmasknya brp.. /ip address add address=192.168.3.0/24 interface=Local [[email protected]] > ip address print Flags: X - disabled, I - invalid, D - dynamic # ADDRESS NETWORK BROADCAST INTERFACE 0 192.168.0.253/24 192.168.0.0 192.168.0.255 Telkom 1 192.168.3.254/24 192.168.3.0 192.168.3.255 Local 2 203.81.187.62/24 203.81.187.0 203.81.187.255 Diginet 3. Buat rule di [IP – Firewall - Mangle]: - chain=prerouting src-address=192.168.3.0/26 action=mark-routing new-routing-mark=Internet "untuk menandai paket yang berasal dari 192.168.3.0/26 dengan nama=Internet" - chain=prerouting src-address=192.168.3.64/26 action=mark-routing new-routing-mark=Games "untuk menandai paket yang berasal dari 192.168.3.64/26 dengan nama=Games" Command: /ip firewall mangle add chain=prerouting src-address=192.168.3.0/26 \ action=mark-routing new-routing-mark=Internet /ip firewall mangle add chain=prerouting src-address=192.168.3.64/26 \ action=mark-routing new-routing-mark=Games [[email protected]] ip firewall mangle> print Flags: X - disabled, I - invalid, D - dynamic 0 chain=prerouting src-address=192.168.3.0/26 action=mark-routing new-routing-mark=Internet passthrough=yes 1 chain=prerouting src-address=192.168.3.64/26 action=mark-routing new-routing-mark=Games passthrough=yes 4. Set Gateway untuk masing-masing network. [IP - Route] Command: /ip route add gateway=192.168.0.254 dst-address=0.0.0.0/0 routing-mark=Internet /ip route add gateway=203.81.187.1 dst-address=0.0.0.0/0 routing-mark=Games [[email protected]] > ip route print Flags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, b - bgp, o - ospf # DST-ADDRESS PREFSRC G GATEWAY DIS INTE... 0 ADC 192.168.0.0/24 192.168.0.253 Telkom 1 ADC 192.168.3.0/24 192.168.3.254 Local 2 ADC 203.81.187.0/24 203.81.187.62 Diginet 3 A S 0.0.0.0/0 r 192.168.0.254 Telkom 4 A S 0.0.0.0/0 r 203.81.187.1 Diginet

http://suhaemi.tk

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Tutorial Load Balancing With Fail Over menggunakan Mikrotik 2.9.6 Husam Suhaemi ([email protected]) 5. Buat rule nat-masquerade untuk network 192.168.3.0/24 [IP - Firewall - Nat] Command: /ip firewall nat add chain=srcnat src-address=192.168.3.0/24 action=masquerade [[email protected]] > ip firewall nat print Flags: X - disabled, I - invalid, D - dynamic 0 ;;; Masquerade Network 192.168.3.0/24 chain=srcnat src-address=192.168.3.0/24 action=masquerade

6. Buat script untuk melakukan cek gw dengan tools netwatch: command /system script add name=check-gw source={ :local R1 :local R2 :if ([/tool netwatch get R1 status]=up) do={:set R1 192.168.0.254} :if ([/tool netwatch get R2 status]=up) do={:set R2 203.81.187.1} /ip route set [/ip route find dst-address=0.0.0.0/0] \ gateway=($R1 . , . $R2) } /tool netwatch add comment=R1 host=192.168.0.254 interval=5s up-script=check-gw \ down-script=check-gw /tool netwatch add comment=R2 host=203.81.187.1 interval=5s up-script=check-gw \ down-script=check-gw Setting di Mikrotik sudah selesai. Berikutnya, isikan IP address untuk tiap client Internet dengan IP Address mulai dari: 192.168.3.1 sampai 192.168.3.63. Gunakan Netmask 255.255.255.192 agar workgroup terpisah dengan Games. Jangan lupa berikan IP DNS Telkom di network-properties client Internet sesuai skenario di atas (202.134.0.155 dan 202.134.2.5). Gateway diarahkan ke: 192.168.3.254. Untuk Client Games isikan IP Address mulai dari: 192.168.3.65 sampai dengan 192.168.3.128. Gunakan juga Netmask 255.255.255.192 jika menginginkan workgroup yang terpisah dengan Client untuk Internet. Berikan IP DNS Diginet (203.81.185.12 dan 203.81.185.13) di network-propertiesnya. Gateway diisikan dengan 192.168.3.254. Selamat mencoba... Bogor, 22 Juli 2006 Husam Suhaemi

http://suhaemi.tk

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Tutorial Load Balancing With Fail Over menggunakan Mikrotik 2.9.6 ...

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