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--- qos_project [2017/12/14 09:12] – [7. [PO2] Implementing QoS] carine
+++ qos_project [2017/12/14 10:22] – [7. [PO2] Implementing QoS] carine
@@ Line 277: / Line 277: @@
 <code bash> tc qdisc del dev eth1 root </code>
 __**
-Traffic classification :**__
+Traffic classification and scheduling :**__
+The scheduler we will be using is the Hierarchical fair-service curve (HFSC).
+We start by creating a common class for all types of traffic. The used commands for this are:
+<code bash> tc qdisc add dev eth1 root handle 1: hfsc default 20 </code>
+<code bash> tc class add dev eth1 parent 1: classid 1:1 hfsc sc rate 8000kbit ul rate 8000kbit </code>
+Supposing we have two types of traffic: Video UDP associated with class 1:40 running on destination port 1234, and iperf UDP with class 1:50 running on destination port 5201. In the first case, the dedicated bandwidth is ((87/100)*8000)= 6960 Kbit and in the second case it's 1040 Kbit.
+The following commands are used:
+<code bash> tc class add dev eth1 parent 1:1 classid 1:40 hfsc ls rate 6960kbit ul rate 6960kbit </code>
+<code bash> tc class add dev eth1 parent 1:1 classid 1:50 hfsc ls rate 1040kbit ul rate 1040kbit </code>
+<code bash> iptables -t mangle -A POSTROUTING -o eth1 -p udp --dport 1234 -j CLASSIFY --set-class 1:40 </code>
+<code bash> iptables -t mangle -A POSTROUTING -o eth1 -p udp --dport 5201 -j CLASSIFY --set-class 1:50 </code>