A simple flooding protocol for network-level broadcast.

This implementation uses plain flooding, i.e. it "remembers" (stores) already broadcasted messages in a list and does not rebroadcast them again, if it gets another copy of that message.

The maximum number of entries for that list can be defined in the .ini file (@ref bcMaxEntries) as well as the time after which an entry is deleted (@ref bcDelTime).

If you prefere a memory-less version you should set to false the <verbatim>plainFlooding</verbatim> bool parameter.

Author: Daniel Willkomm

ported to Mixim 2.0 by Theodoros Kapourniotis

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
NetworkProtocolBase	simple module	Module base for different network protocols.

Parameters

Name	Type	Default value	Description
interfaceTableModule	string
headerLength	int	100b	length of the network packet header (in bits)
plainFlooding	bool	true	flag whether to use plain flooding
bcMaxEntries	int	100	Max number of entries in the list of already broadcasted messages
bcDelTime	double	100 s	Time after which an entry for an already broadcasted msg can be deleted
defaultTtl	int	10	Default time-to-live (ttl) used for this module expressed in number of hops.

Properties

Name	Value	Description
display	i=block/fork
class	Flood

Gates

Name	Direction	Size	Description
upperLayerIn [ ]	input
upperLayerOut [ ]	output
lowerLayerIn [ ]	input
lowerLayerOut [ ]	output

Signals

Name	Type	Unit
packetReceivedFromUpper	cPacket
packetReceivedFromLower	cPacket
packetFromLowerDropped	cPacket
packetFromUpperDropped	cPacket
packetSentToLower	cPacket
packetSentToUpper	cPacket

Source code

//
// A simple flooding protocol for network-level broadcast.
//
// This implementation uses plain flooding, i.e. it "remembers"
// (stores) already broadcasted messages in a list and does not
// rebroadcast them again, if it gets another copy of that message.
//
// The maximum number of entries for that list can be defined in the
// .ini file (@ref bcMaxEntries) as well as the time after which an entry
// is deleted (@ref bcDelTime).
//
// If you prefere a memory-less version you should set to false the 
// <verbatim>plainFlooding</verbatim> bool parameter.
//
// @author Daniel Willkomm
//
// ported to Mixim 2.0 by Theodoros Kapourniotis
//
simple Flood extends NetworkProtocolBase like INetworkProtocol
{
    parameters:
        @display("i=block/fork");
        int headerLength @unit(bit) = default(100b); // length of the network packet header (in bits)
        bool plainFlooding = default(true); // flag whether to use plain flooding
        // Max number of entries in the list of already broadcasted messages
        int bcMaxEntries = default(100);
        // Time after which an entry for an already broadcasted msg can be deleted
        double bcDelTime @unit(s) = default(100 s);
        int defaultTtl = default(10); // Default time-to-live (ttl) used for this module expressed in  number of hops.

        @class(Flood);
}

File: src/inet/networklayer/flood/Flood.ned

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