be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl
Class IGPShortcutStrategy

java.lang.Object
  be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl.AbstractLinkLoadComputer
      be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl.AbstractLinkLoadStrategy
          be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl.IGPShortcutStrategy

All Implemented Interfaces:

LinkLoadComputer, LinkLoadStrategy

public class IGPShortcutStrategy
extends AbstractLinkLoadStrategy

Implement the IGP shortcut link load computation strategy (IETF RFC-3906).

"Traffic to nodes that are the tail-end of TE-tunnels, will flow over those TE-tunnels. Traffic to nodes that are downstream of the tail-end nodes will also flow over those TE-tunnels. If there are multiple TE-tunnels to different intermediate nodes on the path to destination node X, traffic will flow over the TE-tunnel whose tail-end node is closest to node X". (RFC-3906)

Notes:

• this strategy does not use ECMP.
• the implementation works as follow: The normal IP shortest path is calculated and traffic is forwarded using all TE-tunnels on that path (no matter the metric of the path).

Creation date: 23 juin 2006

Author:

Gaël Monfort (monfort@run.montefiore.ulg.ac.be)

Field Summary

Fields inherited from class be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl.AbstractLinkLoadStrategy

data, ECMP, spf, tm

Fields inherited from class be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl.AbstractLinkLoadComputer

changeListener, domain

Constructor Summary

IGPShortcutStrategy(Domain domain, TrafficMatrix tm)

Method Summary

boolean	equals(java.lang.Object o) returns true if the LinkLoadComputer uses the same parameters as the object o.
int	hashCode()
boolean	isECMP() Get the ECMP (Equal-Cost Multi-Path) property.
void	recompute() Recomputes the load data.

Methods inherited from class be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl.AbstractLinkLoadStrategy

detachData, getData, getShortName, getSPFAlgo, getTrafficMatrices, setECMP, setSPFAlgo, setTm, toString

Methods inherited from class be.ac.ulg.montefiore.run.totem.trafficMatrix.model.impl.AbstractLinkLoadComputer

addListener, dataChanged, destroy, getDomain, invalidate, isUpToDate, removeListener, setUptoDate, startListening, stopListening, update

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface be.ac.ulg.montefiore.run.totem.trafficMatrix.model.LinkLoadComputer

addListener, destroy, getDomain, invalidate, isUpToDate, removeListener, startListening, stopListening, update

Constructor Detail

IGPShortcutStrategy

public IGPShortcutStrategy(Domain domain,
                           TrafficMatrix tm)

Method Detail

recompute

public void recompute()

Description copied from interface: LinkLoadComputer

Recomputes the load data.

equals

public boolean equals(java.lang.Object o)

Description copied from interface: LinkLoadComputer

returns true if the LinkLoadComputer uses the same parameters as the object o. (the computed data at a given moment are equivalent)

Specified by:

equals in interface LinkLoadComputer

Specified by:

equals in interface LinkLoadStrategy

Overrides:

equals in class AbstractLinkLoadStrategy

hashCode

public int hashCode()

Specified by:

hashCode in interface LinkLoadComputer

Specified by:

hashCode in interface LinkLoadStrategy

Overrides:

hashCode in class AbstractLinkLoadStrategy

isECMP

public boolean isECMP()

Description copied from class: AbstractLinkLoadStrategy

Get the ECMP (Equal-Cost Multi-Path) property.

By default : false

Specified by:

isECMP in interface LinkLoadStrategy

Overrides:

isECMP in class AbstractLinkLoadStrategy

Returns:

true if equal-cost multi-path is activated and false otherwise