This module provides various layer 2 services such as packet forwarding, interface selection, virtual LAN handling, stream handling.

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

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

Parameters

Name	Type	Default value	Description
macTableModule	string	""
interfaceTableModule	string		relative module path of the interface table

Properties

Name	Value	Description
display	i=block/layer

Gates

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

Source code

//
// This module provides various layer 2 services such as packet forwarding,
// interface selection, virtual LAN handling, stream handling.
//
module BridgingLayer like IProtocolLayer
{
    parameters:
        string macTableModule = default("");
        string interfaceTableModule; // relative module path of the interface table
        *.macTableModule = default(absPath(this.macTableModule));
        *.interfaceTableModule = default(this.interfaceTableModule);
        @display("i=block/layer");
    gates:
        input upperLayerIn;
        output upperLayerOut;
        input lowerLayerIn;
        output lowerLayerOut;
    submodules:
        processingDelayLayer: <default("")> like IProcessingDelayLayer {
            @display("p=300,150");
        }
        directionReverser: <default("DirectionReverserLayer")> like IProtocolLayer {
            @display("p=300,300");
        }
        streamIdentifier: <default("")> like IProtocolLayer {
            @display("p=300,450");
        }
        streamRelay: <default("")> like IProtocolLayer {
            @display("p=300,600");
        }
        streamFilter: <default("")> like IProtocolLayer {
            @display("p=300,750");
        }
        streamCoder: <default("")> like IProtocolLayer {
            @display("p=300,900");
        }
        interfaceRelay: <default("InterfaceRelayLayer")> like IProtocolLayer {
            @display("p=300,1050");
        }
        vlanPolicy: <default("")> like IProtocolLayer {
            @display("p=300,1200");
        }
    connections:
        upperLayerIn --> processingDelayLayer.upperLayerIn;
        processingDelayLayer.lowerLayerOut --> directionReverser.upperLayerIn;
        directionReverser.lowerLayerOut --> streamIdentifier.upperLayerIn;
        streamIdentifier.lowerLayerOut --> streamRelay.upperLayerIn;
        streamRelay.lowerLayerOut --> streamFilter.upperLayerIn;
        streamFilter.lowerLayerOut --> streamCoder.upperLayerIn;
        streamCoder.lowerLayerOut --> interfaceRelay.upperLayerIn;
        interfaceRelay.lowerLayerOut --> vlanPolicy.upperLayerIn;
        vlanPolicy.lowerLayerOut --> lowerLayerOut;

        lowerLayerIn --> vlanPolicy.lowerLayerIn;
        vlanPolicy.upperLayerOut --> interfaceRelay.lowerLayerIn;
        interfaceRelay.upperLayerOut --> streamCoder.lowerLayerIn;
        streamCoder.upperLayerOut --> streamFilter.lowerLayerIn;
        streamFilter.upperLayerOut --> streamRelay.lowerLayerIn;
        streamRelay.upperLayerOut --> streamIdentifier.lowerLayerIn;
        streamIdentifier.upperLayerOut --> directionReverser.lowerLayerIn;
        directionReverser.upperLayerOut --> processingDelayLayer.lowerLayerIn;
        processingDelayLayer.upperLayerOut --> upperLayerOut;
}

File: src/inet/linklayer/ethernet/common/BridgingLayer.ned

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