Load-balancing

RouterOS Forwarding Protocols
1

Hello everybody,

Maybe i am not seeing the obvious, but what is the recommended way to load-balance 2 wan’s?
i know about ppc but it seems rather complicated for a simple scenario like this one.

2 wan’s with diffrent rates.

Scenario 1: I want to move .google. to wan 2, and if wan2 fails use wan1 for google traffic. Is this supposed to work with layer 7 marking->mangle->routes?
Scenario 2: The same problem but knowing the destingation ip: All traffic to a certain destination IP should go to wan2 and if that fails use wan1. simpler than scenario 1.

Thanks.

2

use /tool netwatch

3

you cannot use L7 filters to route TCP traffic until you don’t use NAT

Scenario2:

/ip route add gateway=wan2 routing-mark=wan2
/ip route add gateway=wan1 routing-mark=wan2 distance=10
/ip firewall address-list add address=1.0.0.0/8 list=some_networks
/ip firewall mangle add chain=prerouting in-interface=local dst-address-list=some_networks action=mark-routing new-routing-mark=wan2
4

Chupaka, can you please explain why scenario 1 doenst work?
And when is PCC recommended?

thanks.

5

L7 works with data. in TCP, data is sent only after establishing the connection. you cannot then move the connection to another link - only if you do not use NAT (UPD: I mean, if you are using PI addresses)

PCC is recommended in case of balancing of similar traffic. if you want strict policy - you do strict policy, like above