Interfaces LTE and Wi-Fi in the same node.

[Joahannes Bruno]

Hello friends. I am searching to implement an example that a node has two simultaneous interfaces, an LTE and other Wifi. But in my tests I have the following message of error:

"msg="InternetStackHelper::Install (): Aggregating an InternetStack to a node with an existing Ipv4 object", file=../src/internet/helper/internet-stack-helper.cc, line=428

terminate called without an active exception

Command ['/home/joahannes/repos/ns-3-allinone/ns-3-dev/build/scratch/lte-wifi'] terminated with signal SIGIOT. Run it under a debugger to get more information (./waf --run <program> --command-template="gdb --args %s <args>")."

Annex the project to see how it is mounted.

Can anybody help me?

[Konstantinos]

Hi Joahannes,

The error message is clear pointing out where the error comes from.

    NodeContainer ueNodes;
    ueNodes.Create(node_ue);

    NodeContainer wifiNode;
    wifiNode.Add (ueNodes.Get (0));
    internet.Install(ueNodes);
    internet.Install(wifiNode);

You have created the UE node and the WiFi node is actually one of those UE nodes.

Then you try to install the InternetStack on the same node twice, once as UE and once as WiFi.

Regards,

K

[Joahannes Bruno]

Thanks for the answer, my friend.

I removed the words "internet.Install (wifiNode);" and have no more error. However, implementation got the following message and without the expected success:

Waf: Leaving directory `/ home / joahannes / repos / ns-3-allinone / ns-3-dev / build '
Build commands will be stored in build / compile_commands.json
'Build' finished successfully (8.963s)
Command [/ home / joahannes / repos / ns-3-allinone / ns-3-dev / build / scratch / lte-wifi '] terminated with signal SIGSEGV. Run it under a debugger to get more information (./waf --run <program> --command-template = "gdb --args% s <args>").

Upgraded project attached.

[Konstantinos]

Again the output tells you what your next step should be:

Run it under a debugger to get more information (./waf --run<program> --command-template = "gdb --args% s <args>").

If you do not know how to use gdb or other debugger, study those first. 

[Joahannes Bruno]

Hello friends.

I can add two interfaces (WiFi and LTE) in a single node, but I face problems at the time of IP assignment.

At the end is only the IP Wi-Fi, not both.

Can someone help me? The following code attached.

[Tommaso Pecorella]

Why do you think that the nodes have just one IP address ?

I.e., don't mistake the fact that you are not able to use the node second address with the fact that it doesn't have one.

Read your code and try to understand the meaning of each line.

T.

[Joahannes Bruno]

Thank you friends. Now I understand.

[Alkondan Balaji]

Could you send the working code. Please