NS-3.42 Simulation Error: Cannot install a root queue disc on a device already having one. Delete the existing queue disc first."

[Linux Chima]

Good day everyone. Thank you for your good works here.

I am working on a project that compares the performance of DCTCP and CUBIC congestion control algorithms in a data center environment using metrics such as Latency, Bandwidth utilization and Incast tolerance.

However, when I try to simulate the C++ code, I receive the following error: "aborted. cond="ndi->second.m_rootQueueDisc", msg="Cannot install a root queue disc on a device already having one. Delete the existing queue disc first.", +0.000000000s -1"

I am using NS-3.42 environment. 

I have attached a section of my code which deals with QueueDisc. I am happy to provide any further sections of my code if required.

Please is there anyone who can help look into this and advise me?

Thank you for helping out,

Linux

[Tom Henderson]

See the program examples/tcp/tcp-linux-reno.cc (line 244) for an example of how to customize the queue disc type in a TCP simulation (there are also other similar examples that do this).

- Tom

--
Posting to this group should follow these guidelines https://www.nsnam.org/wiki/Ns-3-users-guidelines-for-posting
---
You received this message because you are subscribed to the Google Groups "ns-3-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to ns-3-users+...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/ns-3-users/b253f3cd-0251-40bf-bbcc-444e5b018f45n%40googlegroups.com.

[Linux Chima]

Thank you Tom, I will check the program examples/tcp/tcp-linux-reno.cc (line 244) and provide and update ...