Package org.cloudbus.cloudsim.network.switches

Class EdgeSwitch

java.lang.Object

org.cloudbus.cloudsim.core.CloudSimEntity

org.cloudbus.cloudsim.network.switches.AbstractSwitch

org.cloudbus.cloudsim.network.switches.EdgeSwitch

All Implemented Interfaces:

Cloneable, Comparable<SimEntity>, Runnable, Identifiable, Nameable, SimEntity, Switch

public class EdgeSwitch
extends AbstractSwitch

Represents an Edge Switch in a Datacenter network, which can be connected to NetworkHosts. It interacts with other Datacenter in order to exchange packets.
Please refer to following publication for more details:

• Saurabh Kumar Garg and Rajkumar Buyya, NetworkCloudSim: Modelling Parallel Applications in Cloud Simulations, Proceedings of the 4th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2011, IEEE CS Press, USA), Melbourne, Australia, December 5-7, 2011.

Since:

CloudSim Toolkit 3.0

Author:

Saurabh Kumar Garg, Manoel Campos da Silva Filho

Nested Class Summary

Nested classes/interfaces inherited from interface org.cloudbus.cloudsim.core.SimEntity

SimEntity.State

Field Summary

Fields

Modifier and Type	Field	Description
static final int	LEVEL	The level (layer) of the switch in the network topology.
static final int	PORTS	Default number of ports that defines the number of Host that can be connected to the switch.

Fields inherited from interface org.cloudbus.cloudsim.core.SimEntity

NULL

Fields inherited from interface org.cloudbus.cloudsim.network.switches.Switch

NULL

Constructor Summary

Constructors

Constructor	Description
EdgeSwitch(CloudSim simulation, NetworkDatacenter dc)	Instantiates a EdgeSwitch specifying Datacenter that are connected to its downlink and uplink ports, and corresponding bandwidths.

Method Summary

Modifier and Type	Method	Description
void	connectHost(NetworkHost host)	Connects a NetworkHost to the switch, by adding it to the getHostList().
boolean	disconnectHost(NetworkHost host)	Disconnects a NetworkHost from the switch, by removing it from the getHostList().
List<NetworkHost>	getHostList()	Gets a read-only list of Hosts connected to the switch.
int	getLevel()	Gets the level (layer) of the Switch in the network topology, depending on whether it is a RootSwitch (layer 0), AggregateSwitch (layer 1) or EdgeSwitch (layer 2).
protected void	processPacketDown(SimEvent evt)	Sends a packet from uplink to Datacenter connected through a downlink port.
protected void	processPacketUp(SimEvent evt)	Sends a packet from down switch or host to Datacenter connected through an uplink port.

Methods inherited from class org.cloudbus.cloudsim.network.switches.AbstractSwitch

addPacketToBeSentToFirstUplinkSwitch, addPacketToSendToDownlinkSwitch, addPacketToSendToHost, addPacketToSendToUplinkSwitch, bandwidthByPacket, downlinkTransferDelay, getDatacenter, getDownlinkBandwidth, getDownlinkSwitches, getDownlinkSwitchPacketList, getHostPacketList, getPorts, getSwitchingDelay, getUplinkBandwidth, getUplinkSwitches, getUplinkSwitchPacketList, getVmHost, packetTransferDelay, processEvent, processHostPacket, setDatacenter, setDownlinkBandwidth, setPorts, setSwitchingDelay, setUplinkBandwidth, shutdown, startInternal, uplinkTransferDelay

Methods inherited from class org.cloudbus.cloudsim.core.CloudSimEntity

cancelEvent, clone, compareTo, equals, getId, getName, getNextEvent, getNextEvent, getShutdownTime, getSimulation, getStartTime, getState, hashCode, isAlive, isFinished, isStarted, pause, run, run, schedule, schedule, schedule, schedule, schedule, schedule, scheduleFirst, scheduleFirst, scheduleFirstNow, scheduleFirstNow, scheduleNow, scheduleNow, selectEvent, send, send, sendNow, sendNow, setEventBuffer, setId, setName, setSimulation, setState, start, waitForEvent

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface org.cloudbus.cloudsim.core.Identifiable

getId

Methods inherited from interface org.cloudbus.cloudsim.core.Nameable

getName

Methods inherited from interface org.cloudbus.cloudsim.core.SimEntity

getShutdownTime, getSimulation, getStartTime, getState, isAlive, isFinished, isStarted, run, schedule, schedule, schedule, schedule, schedule, schedule, schedule, setName, setSimulation, setState, start

Field Details

LEVEL

public static final int LEVEL

The level (layer) of the switch in the network topology.

See Also:

• Constant Field Values

PORTS

public static final int PORTS

Default number of ports that defines the number of Host that can be connected to the switch.

See Also:

• Constant Field Values

Constructor Details

EdgeSwitch

public EdgeSwitch(CloudSim simulation,
 NetworkDatacenter dc)

Instantiates a EdgeSwitch specifying Datacenter that are connected to its downlink and uplink ports, and corresponding bandwidths. In this switch, downlink ports aren't connected to other switch but to hosts.

Parameters:

simulation - the CloudSim instance that represents the simulation the Entity belongs

dc - The Datacenter where the switch is connected to

Method Details

processPacketDown

protected void processPacketDown(SimEvent evt)

Description copied from class: AbstractSwitch

Sends a packet from uplink to Datacenter connected through a downlink port.

Overrides:

processPacketDown in class AbstractSwitch

Parameters:

evt - event/packet to process

processPacketUp

protected void processPacketUp(SimEvent evt)

Description copied from class: AbstractSwitch

Sends a packet from down switch or host to Datacenter connected through an uplink port.

Overrides:

processPacketUp in class AbstractSwitch

Parameters:

evt - Event/packet to process

getLevel

public int getLevel()

Description copied from interface: Switch

Gets the level (layer) of the Switch in the network topology, depending on whether it is a RootSwitch (layer 0), AggregateSwitch (layer 1) or EdgeSwitch (layer 2).

Returns:

the switch network level

getHostList

public List<NetworkHost> getHostList()

Gets a read-only list of Hosts connected to the switch.

Returns:

connectHost

public void connectHost(NetworkHost host)

Connects a NetworkHost to the switch, by adding it to the getHostList().

Parameters:

host - the host to be connected to the switch

disconnectHost

public boolean disconnectHost(NetworkHost host)

Disconnects a NetworkHost from the switch, by removing it from the getHostList().

Parameters:

host - the host to be disconnected from the switch

Returns:

true if the Host was connected to the switch, false otherwise