In the following example, a customer needs a router that uses a QoS concept with two QoS classes on the VDSL connection. The classes are defined as VoIP and Best Effort. The device used is a router with an internal xDSL modem.
The VoIP service class is assigned an absolute bandwidth of 10 Mbps. The customer tags their packets using DSCP so that the packets can be assigned to the correct queue in the router.
If more data is transmitted in the defined service class than there is bandwidth available, this data is assigned to the Best Effort class. The definition is as follows:
| Class | DSCP |
|---|---|
| VOIP | EF |
-
Create the template for the VOIP service class. The Best Effort class does not need to be configured manually as it is present by default.
-
Create a list that specifies a strict order for the classes you create. The first class in the list has the highest priority.
-
Finally, the configured list must be assigned to a WAN interface. In this example we use DSL-1. Switch to the dialog .
The packet statistics and the distribution into the queues can be viewed on the CLI under /status/WAN/QoS/Statistics can be retrieved (abbreviated version here):
root@:/ > ls /status/WAN/QoS/Statistics Interface Priority Queue-Name Pre-Classified DSCP-Classified Total-Classified =======================-------------------------------------------------------------------------------------- DSL-1 0 #urgent 0 0 0 DSL-1 1 VOIP 0 0 0 DSL-1 2 #best-effort 0 0 0
