If you have two DSL links, and you want to dedicate one link for the YOUTUBE and FACEBOOK traffic only, you can do it with Mikrotik in few simple steps.
First understand the logic, Main idea is to first create Address list with YOUTUBE ip addresses. (u can get them from goggling) then , in mangle, create rule to mark packets with the above created address list, name it
youtube-addresses, then in route create rule to route youtube address list to go via DSL 2 .
Some examples . . .
/ip firewall mangle chain=prerouting action=mark-routing new-routing-mark=youtube passthrough=yes src-address=0.0.0.0/0 dst-address=188.8.131.52/21
(or destination address list you created in starting, U have to create Several IP address lists)
then create ROUTE for this list.
/ip route add comment=”" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=192.168.2.1 routing-mark=youtube scope=255 target-scope=10
Its amazing, you can route any Website/traffic to specific WAN link, for example dedicated DSL link for streaming media sites or FB. its kewl
For more info and ideas, please visit following link.
Perhaps a better approach for youtube mark and route method.