An example of how to create a basic QoS policy and attach it to an interface.

1. Define a policy.

   user@system# set policy qos name policy-1 shaper

2. Specify a profile and bandwidth for the policy.

   user@system# set policy qos name policy-1 shaper profile def bandwidth 3mbit

3. Assign the profile to receive non-classified traffic. That is, default traffic.

   user@system# set policy qos name policy-1 shaper default def

4. Attach the policy to a dataplane interface.
   For platforms in router mode:

   user@system# set interfaces dataplane dp0s3 policy qos policy-1

   For platforms in switch mode:

   user@system# set interfaces dataplane dp0ce10 switch-group port-parameters policy qos policy-1

5. Commit the configuration.

   user@system# commit

6. Optional: Switch to operational mode and view the configuration, to check that the policy is created and attached to an interface as you expect.

   user@system:~$ show policy qos

   For the router mode example, the output will be similar to this:

   Interface	TC	Counters
   -------------------------------------
   dp0s3		0		0 Bytes
   				0 Packets
   				0 Tail-drop
   				0 RED-drop
   		1		0 Bytes
   				0 Packets
   				0 Tail-drop
   				0 RED-drop
   		2		0 Bytes
   				0 Packets
   				0 Tail-drop
   				0 RED-drop
   		3		0 Bytes
   				0 Packets
   				0 Tail-drop
   				0 RED-drop

   For the switch mode example, the output would be the same except with interface dp0ce10 instead.