Broadcast a message on Inet 4.4.0

Question

I work with INET4.4.0, and I would like to send a broadcast message to all nodes in the network. For this, I tried to add this instruction in the omnetpp.ini file:

*.host.networkLayer.ip.forceBroadcast = true

but INET does not recognize this instruction.

When I looked in INET4.4/networklayer/ipv4.ned/, I didn't find the forceBroadcast parameter.

Can someone help me, please?

omnetpp.ini does not contain instructions. It is used for setting values of the parameters of a network. You have correctly stated that there is no parameter forceBroadcast in IPv4. So you should not be surprised that INET doesn't recognize that parameter. — Jerzy D.
– Jerzy D., Commented Jul 25, 2023 at 19:17
So, how to ensure the broadcast in inet4.4.0? Because with the old version of INET, you just have to initialize in omnet.ini forceBrodcat to true — O. Sarah
– O. Sarah, Commented Jul 26, 2023 at 8:28

marc_s · Accepted Answer · 2023-11-11 17:21:32Z

0

Yes, that parameter name has changed and there are two parameters instead:

bool limitedBroadcast = default(false); // send out limited broadcast packets coming from higher layer
string directBroadcastInterfaces = default("");   // list of interfaces that direct broadcast is enabled (by default direct broadcast is disabled on all interfaces)

But probably a better approach would be to do the same as with an application in the real world. Use the broadcast address (255.255.255.255) as a destination address in your UDP application.

edited Nov 11, 2023 at 17:21

marc_s

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answered Jul 26, 2023 at 15:05

Rudi

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