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This guide assumes the following:
"ISP1" is your 1st wan connection name
"ISP2" is your 2nd wan connection name
"LAN" is your local network name
"ISP1" recieves the IP 111.111.111.1/24 on the network 111.111.111.0/24
"ISP2" recieves the IP 222.222.222.1/24 on the network 222.222.222.0/24
1. If your ISP assigned IP's via DHCP be sure to do the following (if they are assigned static move to step 2):
Log into the routeros webfig or winbox:
2. Remove current routing rules
3. SSH into your router and run the following script:
This script assumes that you have 2 equal WAN connections(ex. two 7/1 DSL lines). If you have unbalanced connections you can modify the section of the script that defines how the traffic is balanced. That starts on line 6.
For example I have a 45/6 connection and a 30/6 connection and I have the following lines( Note that there are 5 lines and the first one starts at 5/0 and moves on from there):
The PCC method automatically does failover. All around good way to load balance 2 connections. You can also balance more connections by configuring the script correctly.
"ISP1" is your 1st wan connection name
"ISP2" is your 2nd wan connection name
"LAN" is your local network name
"ISP1" recieves the IP 111.111.111.1/24 on the network 111.111.111.0/24
"ISP2" recieves the IP 222.222.222.1/24 on the network 222.222.222.0/24
1. If your ISP assigned IP's via DHCP be sure to do the following (if they are assigned static move to step 2):
Log into the routeros webfig or winbox:
- IP
- DHCP Client
- Click on your first WAN DHCP client
- Change "add default gateway" to no
- Repeat the same for your second WAN connection
2. Remove current routing rules
- IP
- Firewall
- Nat
- Remove the entry for "masquerade" to your current single ISP.
3. SSH into your router and run the following script:
Code:
/ ip firewall mangle
add chain=prerouting dst-address=111.111.111.0/24 action=accept in-interface=LAN
add chain=prerouting dst-address=222.222.222.0/24 action=accept in-interface=LAN
add chain=prerouting in-interface=ISP1 connection-mark=no-mark action=mark-connection new-connection-mark=ISP1_conn
add chain=prerouting in-interface=ISP2 connection-mark=no-mark action=mark-connection new-connection-mark=ISP2_conn
add chain=prerouting in-interface=LAN connection-mark=no-mark dst-address-type=!local per-connection-classifier=both-addresses:2/0 action=mark-connection new-connection-mark=ISP1_conn
add chain=prerouting in-interface=LAN connection-mark=no-mark dst-address-type=!local per-connection-classifier=both-addresses:2/1 action=mark-connection new-connection-mark=ISP2_conn
add chain=prerouting connection-mark=ISP1_conn in-interface=LAN action=mark-routing new-routing-mark=to_ISP1
add chain=prerouting connection-mark=ISP2_conn in-interface=LAN action=mark-routing new-routing-mark=to_ISP2
add chain=output connection-mark=ISP1_conn action=mark-routing new-routing-mark=to_ISP1
add chain=output connection-mark=ISP2_conn action=mark-routing new-routing-mark=to_ISP2
/ ip route
add dst-address=0.0.0.0/0 gateway=111.111.111.1 routing-mark=to_ISP1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=222.222.222.1 routing-mark=to_ISP2 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=111.111.111.1 distance=1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=222.222.222.1 distance=2 check-gateway=ping
/ ip firewall nat
add chain=srcnat out-interface=ISP1 action=masquerade
add chain=srcnat out-interface=ISP2 action=masqueradeThis script assumes that you have 2 equal WAN connections(ex. two 7/1 DSL lines). If you have unbalanced connections you can modify the section of the script that defines how the traffic is balanced. That starts on line 6.
For example I have a 45/6 connection and a 30/6 connection and I have the following lines( Note that there are 5 lines and the first one starts at 5/0 and moves on from there):
Code:
add chain=prerouting in-interface=LAN connection-mark=no-mark dst-address-type=!local per-connection-classifier=both-addresses:5/0 action=mark-connection new-connection-mark=ISP1_conn
add chain=prerouting in-interface=LAN connection-mark=no-mark dst-address-type=!local per-connection-classifier=both-addresses:5/1 action=mark-connection new-connection-mark=ISP2_conn
add chain=prerouting in-interface=LAN connection-mark=no-mark dst-address-type=!local per-connection-classifier=both-addresses:5/2 action=mark-connection new-connection-mark=ISP1_conn
add chain=prerouting in-interface=LAN connection-mark=no-mark dst-address-type=!local per-connection-classifier=both-addresses:5/3 action=mark-connection new-connection-mark=ISP2_conn
add chain=prerouting in-interface=LAN connection-mark=no-mark dst-address-type=!local per-connection-classifier=both-addresses:5/4 action=mark-connection new-connection-mark=ISP1_connThe PCC method automatically does failover. All around good way to load balance 2 connections. You can also balance more connections by configuring the script correctly.
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