Im beginer in this,but menage to work some thing,but have problem with dual wan ,when one isp is conected its all ok,but when i enable second interface for second ips,all internet stop workin,i dont know how to configure this work,need load balancing too,one is 20/2mbit,second is 6/1,both have dhcp,i get ip from isp,but in dula wan not work,please somebody help me to configure this
You need to setup policy routing. This link will also take care of your load balancing.