Creating traffic shapers

A traffic shaper regulates traffic, making it possible to set the maximum usable bandwidth on a QoS-enabled interface.

IMPORTANT
  • The value of the traffic shaper must not exceed 90% of the maximum bandwidth on the link attached to the interface in order for QoS to function.
  • QoS cannot be implemented on traffic shapers with bandwidth higher than 1 Gbit/s.

Go to Security policy > Quality of service > Traffic shaper tab.

Understanding the traffic shaper grid

Outgoing bandwidth and incoming bandwidth columns

These columns correspond to:

  • Outgoing bandwidth: maximum usable bandwidth for outgoing traffic (sending files, for example),
  • Incoming bandwidth: maximum usable bandwidth for incoming traffic (download of files hosted on the WAN by a client located on the LAN, for example).

Creating the traffic shaper for the LAN interface

  1. Click on Add.
  2. Name the traffic shaper (TS_LAN in this example).
  3. In the Outgoing bandwidth column, enter the value corresponding to 90% of the bandwidth on the link attached to the LAN in (900 [Mbit/s] in this example).
  4. In the Unit column, indicate the bandwidth unit (Mbit/s in this example).
  5. In the Incoming bandwidth column, enter the value corresponding to 90% of the bandwidth on the link attached to the LAN in (900 [Mbit/s] in this example).
  6. In the Unit column, indicate the bandwidth unit (Mbit/s in this example).
  7. Confirm by clicking on Apply.

Creating the traffic shaper for the WAN interface

Follow the steps explained in the procedure Creating the traffic shaper for the LAN interface with the following values:

Name TS_WAN
Outgoing bandwidth 90
Unit Mbits
Incoming bandwidth 90
Unit Mbits

The grid of the traffic shapers set in this example will therefore look like this: