I am using a CRS125 on 6.14 and I am wanting to limit bandwidth usage based on port not IP address. I have tried going into the interface settings and setting the limit there but I get the following error; "Couldn't change interface <ether5> not supported on this interface (6)" doesnt matter if I have the interface in a bridge or not.

First of all, stop to post duplicate post.

Second, you have already read on other topic than not all interface support this method and you must use queue tree or simple queue.

http://forum.mikrotik.com/viewtopic.php ... 78#p418158

I posted this before I saw the other thread, which nobody was even helpful on. You and a few others kept saying to use queues, which I stated in on the other post I had already tried. However I was eventually able to get my setup working correctly by turning bridge firewall on THEN using queues.

Thanks, ran into the same problem and got it working with your tip