With a Mikrotik router (form of embedded Linux) I have created simple queues per machine matched by source IP address.

Each of the 4 machine queues has an unlimited burst 3Mbps/3Mbps for Tx/Rx.

During speedtest.net on all 4 machines at the same time, each machine shows 3Mbps (and is limited correctly there), however the total bandwidth on the uplink goes to 12Mbps (i need to set this to 10Mbps max for the upstream).

I want to restrict the actual traffic passing across the uplink port to 10Mbps regardless of what the other queues are doing (I need this catch all queue to have the final say on the uplink speed).

For example I need:

Scenario A

• Machine A transferring @ 3Mbps
• Machine B transferring @ 3Mbps
• Machine C transferring @ 3Mbps
• Machine D transferring @ 0Mbps Up-link speed = 9Mbps

Scenario B

• Machine A trying to transfer @ 3Mbps
• Machine B trying to transfer @ 3Mbps
• Machine C trying to transfer @ 3Mbps
• Machine D trying to transfer @ 3Mbps
• Up-link speed = 10Mbps
• Actual transfer speed of machine A,B,C,D = 2.5Mbps

This is to allow slight over subscription of bandwidth queues as not all will be transmitting at 3Mbps all the time.

Is this possible and if so how would one go about doing this?