I am afraid you can not! Since the Bandwith Control function of the R480T+ is baed on group or user but not the website or IP address.

I am a little confuse about your topology, is it ISP--ADSL router--TL-ER6020--MySQL &Web Server? And then when you access the MySQL from the Web Server, there are 10sec delay? Then did you try to...

You missed a lot of things. First of all, by default, the switch can not get a IP from the front router automatically. If you want, you need to login to the web page of the switch and config it...

As you like.