QoS operation with intents

The QoS attribute mapping currently supports DiffServ. It uses a 6-bit differentiated services code point (DSCP) in the 8-bit differentiated services field (DS field) in the IP header.

Getting ready

The following steps explain the QoS attribute mapping function:

• Initially configure the QoS profile, which contains the profile name and DSCP value
• When a packet is transferred from a source to destination, the flow builder evaluates whether the transferred packet matches the condition such as actions and endpoints in the flow
• If the packet matches the endpoints, the flow builder applies the flow matching action and DSCP value

Start Mininet, and create three switches (s1, s2, and s3) and four hosts (h1, h2, h3, and h4) in it:

sudo mn --mac --topo tree,2 --controller=remote,ip=192.168.0.100,port=6633

Note

Replace 192.168.0.100 with the IP address of the OpenDaylight controller based on your environment.

You can check the topology you created by executing the net command in the...