[Omnetpp-l] Application Broadcast in Ad Hoc IEEE802.11 network

["Long Vu" <longvu2 at xxx>]

Hello,

I have set up omnet and INET framework on my Ubuntu box and tried
several examples in INET framework directory. I am totally new to
omnet and INET framework actually. I am going to implement an
application flooding protocol for a IEEE 802.11 ad hoc network with 10
nodes. The basic idea is that nodes will be placed at random in an
area: the application layer of node A will broadcast a message to all
neighboring nodes (nodes within the transmission range of node A). The
receiver are not required to reply an ACK. So, I think my application
layer should use the UDP transport (may be this is the simplest
setting for this application).

As I understand, there exists a way to set a field in UDP packet so
that Network and Mac layers simply broadcast the packet (instead of
doing routing stuff). In this case, do I need to define my own UDP
packet or I can just use some existing UDP packet of INET framework?
And if I can use some existing UDP packet, which field should I set so
that the Network layer will do broadcast instead of routing? In case I
am required to define my own UDP packet, how should I tell Network
layer to broadcast the packet?

Thank you very much for your help.
-Long
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