EthernetMultidropLink

channel

EthernetMultidropLink models a shared Ethernet medium in a bus topology where multiple nodes connect to a single cable(1,2,3). This channel type is used for simulating 10BASE-T1S with PLCA (Physical Layer Collision Avoidance) Ethernet that use a multidrop configuration.

<b>See also:</b> ~EthernetPlcaHost, ~EthernetLink

Inheritance diagram

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

Used in

Name	Type	Description
MixedMultidropNetwork	network	This module contains an ~EthernetSwitch connected to a ~StandardHost and a 10BASE-T1S multidrop link with a configurable number of nodes. The switch port acts as the controller of the multidrop link. The network node type can be configured for all the nodes on the multidrop link.
MultidropNetwork	network	This module contains a single 10BASE-T1S multidrop link with a separate controller node and a configurable number of additional nodes. The network node type can be configured for all network nodes on the multidrop link.

Extends

Name	Type	Description
DatarateChannel	channel	(no description)

Parameters

Name	Type	Default value	Description
disabled	bool	false
delay	double	replaceUnit(length / 2e8, "s")	propagation delay
datarate	double	10Mbps	bits per second; 0=infinite
ber	double	0	bit error rate (BER)
per	double	0	packet error rate (PER)
length	double

Properties

Name	Value	Description
class	cDatarateChannel

Signals

Name	Type	Unit	Description
channelBusy	long
messageSent	omnetpp::cMessage
messageDiscarded	omnetpp::cMessage

Statistics

Name	Source	Record	Unit	Interpolation Mode
packetsDiscarded	constant1(messageDiscarded)	count?		none
busy	channelBusy	vector?		sample-hold
utilization	timeavg(channelBusy)	last?
packetBytes	packetBytes(messageSent)	sum?	B	none
throughput	sumPerDuration(packetBits(messageSent))	last?	bps
packets	constant1(messageSent)	count?		none

Source code

//
// EthernetMultidropLink models a shared Ethernet medium in a bus topology where
// multiple nodes connect to a single cable. This channel type is used for
// simulating 10BASE-T1S with PLCA (Physical Layer Collision Avoidance)
// Ethernet that use a multidrop configuration.
//
// @see ~EthernetPlcaHost, ~EthernetLink
//
channel EthernetMultidropLink extends DatarateChannel
{
    double length @unit(m);
    delay = default(replaceUnit(length / 2e8, "s"));
    datarate = default(10Mbps);
}

File: src/inet/node/ethernet/EthernetMultidropLink.ned