hello everyone,
I recently bought RB750GL to have hands on experiences before buying upper class routeros for the company.
I have read MUM PDFs regarding load balancing . Multiple documents stated that bonding , MPLS and EcMP methods requires setting from ISP sides.
What I would like to know is that does PCC method also require ISP setting? Most Documents suggest that it doesn’t need ISP setting. I need confirmation . Thank you very much
No, it doesn’t require ISP settings.
Pukkita,
Thank you for replying the noob question of mine. I have some success PCC dual WANs together and right now trying to see if there are broken link or https issues.
If I may ask 1 more noob question, with PCC 2 WANs together , I am trying to figure out if there are any setting I need to do on the web server side or anywhere to utilize dual WANs’s upload speed?
Thank you 
You can’t.
As you know, PCC divides connections going to internet and spread them over the WANs, so a single connection will go through any of them, but not both.
With a protocol that uses multiple connections (bitorrent for example) and adjusting PCC classifier accordingly you may be able to use both WANs for download/upload from a single internal device, as it will generate many connections that will be spread amongst both wans.
If you want to use both wans to serve from a single internal web server you can’t do that automatically with PCC as requests will come to an specific WAN (and responses should be sent through that same WAN), but could achieve something equivalent: publish two A DNS records for your webserver (same FQDN), with each WAN IP.
You should make sure your setup makes sure that incoming traffic entering one WAN should be replied through that same WAN; most guides and examples on PCC load balancing are setup that way however.
That way requests will come from both WANs; but speed will be the one of the WAN serving out the web page.