IArp

module interface

Interface for Address Resolution Protocol (ARP) implementations. Provides address resolution services for mapping network layer addresses (e.g., IPv4) to link layer addresses (e.g., MAC). Modules implementing this interface maintain a cache of address mappings and handle resolution requests from the network layer.

Inheritance diagram

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

Implemented by

Name	Type	Description
Arp	simple module	Implements the Address Resolution Protocol for IPv4 and IEEE 802 6-byte MAC addresses.
GlobalArp	simple module	Provides global address resolution without exchanging packets.

Used in compound modules

Name	Type	Description
ExtUpperIpv4NetworkLayer	compound module	Provides a network layer that connects the simulation to a real network on the host computer using a TUN device. Allows simulated applications to send and receive packets through the host's networking stack at the IP layer. Contains standard components like routing table and ARP, and uses ~ExtUpperIpv4 with a TUN device for external connectivity.
Ipv4NetworkLayer	compound module	Network(1,2,3,4) layer of an IPv4 node.
SimpleNetworkLayer	compound module	Provides a simple network layer.

Properties

Name	Value	Description
display	i=block/layer

Signals

Name	Type	Unit	Description
arpResolutionInitiated	inet::IArp::Notification
arpResolutionFailed	inet::IArp::Notification
arpResolutionCompleted	inet::IArp::Notification

Source code

//
// Interface for Address Resolution Protocol (ARP) implementations. Provides
// address resolution services for mapping network layer addresses (e.g., IPv4)
// to link layer addresses (e.g., MAC). Modules implementing this interface
// maintain a cache of address mappings and handle resolution requests from
// the network layer.
//
moduleinterface IArp
{
    parameters:
        @display("i=block/layer");
        @signal[arpResolutionInitiated](type=inet::IArp::Notification);
        @signal[arpResolutionCompleted](type=inet::IArp::Notification);
        @signal[arpResolutionFailed](type=inet::IArp::Notification);
    gates:
        input ifIn @labels(ArpPacket,Ieee802Ctrl);
        output ifOut @labels(ArpPacket,Ieee802Ctrl);
}

File: src/inet/networklayer/contract/IArp.ned