How do I create a switch with shared buffer in NS3?

[David Huichen Dai]

Hi all,

I have been plagued by this problem for a long time: How do I create a switch with shared buffer in NS3?

The routine to create a topology in an NS3 script is:

1. create nodes,

2. create links between two nodes using a point-to-pointer-helper, which will return two NetDevice in a NetDeviceContainer,

3. install queue disciplines (e.g., red or pfifo) using a traffic-control-helper on the NetDevices in the NetDeviceContainer.

The queues will be used by each NetDevice, rather than shared by all the ports of an intermediate node, that is a switch/router.

But nowadays the switches are almost shared-buffer ones, how can I implement them in NS3?

And one more question, is the queue in a NetDevice input queue or output queue?

Best,

David