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I want to install the traffic-control layer on my topology below. I tried creating the topology with 3 nodes including node 0, node 1, and node 2. I created 2 p2p links, one between node 0 and node 1, another between node 0 and node 2. I want to measure traffic from node 1 and node 2 sent to node 0. I built as the "traffic-control.cc" file in the tutorial of ns3, however, I see that node 0 has two qdiscs built with node 1 and node 2. I want to have one qdisc on node 0 to measure traffic from other nodes to node 0. How can I do it? enter image description here

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  • Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. – Community Dec 11 '21 at 17:55

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I want to have one qdisc on node 0 to measure traffic from other nodes to node 0. How can I do it?

You can't. Node 0 is connected to Nodes 1 and 2 via two separate P2P links, so there will two different PointToPointNetDevices on Node 0, and so there will be two QueueDiscs.

It's unclear precisely what you're trying to measure. Perhaps you can clarify?

If you're trying view all packets going through Node 0's QueueDiscs, you could use one or more of the TraceSources available on QueueDiscs. Keep in mind that not all Packets which arrive at a Channel will necessarily makes its way to a QueueDisc – Packets could get dropped due lack of space in the receiving buffer, or simulated corruption.

Sagar
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