what solution can solve this scenario?

Hello

I have a network same this:
5-8-2014 7-06-47 PM.jpg
How ‘PC ClientA’ can use internet of adsl modem??

thanks.

On SXT1 add default route

/ip route add gateway=192.168.1.1

Also make sure you don’t have a IP conflict with PC Client 1 and your modem.

If he does not redistribute the default route over RIP, he also needs to add a default route on SXT2.
Also, all clients need a proper DNS address…

thanks

this solution make modem as gateway for all client in left subnet (192.168.2.0/24).
This is a simplified picture of the network. in fact each subnet have a modem and that route added.

maybe i need use NAT. but i dont know how i can do it.