Hi, I’m new to networking and a noob when it comes to MikroTik products. I just bought a CRS226-24G-2S+RM and I’m currently having issues limiting bandwidth on a per port interface. I created a simple queue for example on interface “ether3” and specified target upload/download speed, however I can’t seem to get it to work. I currently have a DHCP server setup on “ether2” (LAN) and all other interfaces set as a slave to it. DHCP works just fine of course, but I cant see any traffic passing through my queue on “ether3”. I did notice that when I set interface “ether3” to not have a master port, I start to see traffic on my queue. The only problem is once I take off the master port, I don’t have DHCP on that interface and renders it useless. Any solution would be awesome! 
Confirm are you trying to limit each ip on your lan to a max speed or are you trying to limit the traffic by port. if you just wanting to limit the lan Set you simple you up. In the example below I have a PCQ queue that is controling my upload and one for my download. I create them depending on what I would like to control each use in my lan’s maximum speed to. if you configure Target upload and Target Download mx limit it will mean the max traffic upload and download for that queue will be at that level. You can create a parent queue which has these controls on and limit each of your other queues with different PCQ upload or download levels and priorities. Remember that the queues operate in order they are listed in the simple queue, so if you have a queue at the top of the list that is to broad it will prevent all queues below from working.
add name=“queue name” target=172.17.0.0/24 parent=“” packet-marks=“”
priority=8/8 queue=pcq-upload-default/pcq-download-default limit-at=0/0
max-limit=0/0 burst-limit=0/0 burst-threshold=0/0 burst-time=0s/0s
total-queue=default
name=“HQ-OFFICES” target=172.17.8.0/24 parent=WAN packet-marks=“”
priority=8/8 queue=pcq-upload-256k/pcq-down-1M limit-at=0/0
max-limit=0/0 burst-limit=0/0 burst-threshold=0/0 burst-time=0s/0s
name=“WAN” target=172.17.0.0/16 parent=none packet-marks=“” priority=8/8
queue=synchronous-default/synchronous-default limit-at=0/0
max-limit=20M/20M burst-limit=0/0 burst-threshold=0/0 burst-time=0s/0s
Can you give us more information on what controls you are trying to put in place so we can assist you better