How to limit UDP traffic?

Question

Hi, 
 I have a problem with UDP packet shaping. I have a special program that downloads data from the internet from a customer via UDP and port 33003. The problem is that even though I have shaping set up and the data is capped at 250Mbps from the firewall to PC, the source from the internet keeps trying to send data at full speed. see attach. 
 The line is then congested and there is no traffic at all. 
 How do I get the source to slow down?

Michal Talman CZ · Accepted Answer

In the end we found the following. 
 The program works by being connected to the source via SSH and the sending speed is controlled by the program itself. 
 The rule is that the sending speed on the WAN interface is always 2x greater than the set shaping or the actual speed at which the data flows into the program. 
 I set the shaping to 100Mbit and the data was only 200Mbps at a time on the WAN interface. 
 So beware of IBM's ASPERA!

FFin · Answer

Are your traffic-shaping settings and WAN-interfaces configured with the correct available bandwith? Otherwise traffic shaping might not apply correctly.

How to limit UDP traffic?

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