com.net2plan.examples.general.onlineSim

Class Online_evProc_ipOverWdm

Object

com.net2plan.internal.sim.ISimExternal

com.net2plan.interfaces.simulation.IEventProcessor

com.net2plan.examples.general.onlineSim.Online_evProc_ipOverWdm

All Implemented Interfaces:

com.net2plan.internal.IExternal

public class Online_evProc_ipOverWdm
extends com.net2plan.interfaces.simulation.IEventProcessor

Implements the reactions of an IP over WDM multilayer network, where the IP traffic is carried over lightpaths routed over a topology of fiber links with a fixed or a flexible wavelength grid.

The design follows the assumptions described in WDMUtils Net2Plan library

This algorithm implements the reactions of an IP over WDM multilayer network. Internally, the algorithm just coordinates the reactions of the WDM layer and the IP layer, each of them implemented by the Online_evProv_wdm and Online_evProc_ipOspf modules. The coordination actions are basically during the failure processes, propagating the failures and repairs at the WDM layer, as links down/up events in the IP layer.

The algorithm reacts to the following events:

• WDMUtils.LightpathAdd: Adds the corresponding lightpath to the network, if enough resources exist for it, calling to the WDM layer module. If so, it is added also as an IP link, and the IP routing modified, by calling the IP module.
• WDMUtils.LightpathRemove: Removes the corresponding lightpath, releasing the resources and updating both layers.
• SimEvent.DemandAdd: (only for the IP layer) Forwards this event to the IP layer module. The target module behaves appropriately.
• SimEvent.DemandModify: Forwards this event to the WDM or IP layer modules, depending on the event associated layer. The target module behaves appropriately.
• SimEvent.DemandRemove: (only for the IP layer) Forwards this event to the IP layer module. The target module behaves appropriately.
• SimEvent.NodesAndLinksChangeFailureState: This event is first forwarded to the WDM layer module, with the fails/repairs associated to its layer. Then, the event is sent to the IP layer, updating the IP links failures and repairs, depending on the results of the WDM layer. For instance, any WDM failures that result in a WDM demand carrying no traffic (affected by a failure for which it could not recover), is propagated to the IP layer as a failing IP link.

This module can be used in conjunction with the Online_evGen_ipOverWdm generator for simulating IP over WDM designs.

See the technology conventions used in Net2Plan built-in algorithms and libraries to represent IP and WDM networks.

Keywords:

• IP/OSPF, WDM, Multilayer, Network recovery: protection, Network recovery: restoration

Input parameters:

wdmNumFrequencySlotsPerFiber: Default: 40 Set the number of frequency slots per fiber. If < 1, the number of slots set in the input file is used. wdmRwaType: Value to select within {srg-disjointness-aware-route-first-fit, alternate-routing, least-congested-routing, load-sharing} Criteria to decide the route of a connection among the available paths wdmK: Default: 2 Maximum number of admissible paths per demand wdmRandomSeed: Default: 1 Seed for the random generator (-1 means random) wdmMaxLightpathNumHops: Default: -1 A lightpath cannot have more than this number of hops. A non-positive number means this limit does not exist wdmRemovePreviousLightpaths: Boolean type (default: false). If true, previous lightpaths are removed from the system during initialization. wdmDefaultAndNewRouteRevoveryType: Value to select within {none, restoration, 1+1-link-disjoint, 1+1-node-disjoint, 1+1-srg-disjoint} New lightpaths are not protected, or are protected by a 1+1 link disjoint, or a node disjoint or a SRG disjoint lightpath wdmTransponderTypesInfo: Default: 10 1 1 9600 1 Transpoder types separated by ";" . Each type is characterized by the space-separated values: (i) Line rate in Gbps, (ii) cost of the transponder, (iii) number of slots occupied in each traversed fiber, (iv) optical reach in km (a non-positive number means no reach limit), (v) cost of the optical signal regenerator (regenerators do NOT make wavelength conversion ; if negative, regeneration is not possible). ipMaximumE2ELatencyMs: Default: -1.0 Maximum end-to-end latency of the traffic of an IP demand to consider it as lost traffic (a non-positive value means no limit)

Constructor Summary

Constructors

Constructor and Description
Online_evProc_ipOverWdm()

Method Summary

Modifier and Type	Method and Description
String	finish(StringBuilder output, double simTime)
void	finishTransitory(double simTime)
String	getDescription()
List<com.net2plan.utils.Triple<String,String,String>>	getParameters()
void	initialize(com.net2plan.interfaces.networkDesign.NetPlan initialNetPlan, Map<String,String> algorithmParameters, Map<String,String> simulationParameters, Map<String,String> net2planParameters)
void	processEvent(com.net2plan.interfaces.networkDesign.NetPlan currentNetPlan, com.net2plan.interfaces.simulation.SimEvent event)

Methods inherited from class com.net2plan.interfaces.simulation.IEventProcessor

endSimulation, endTransitory, scheduleEvent

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Online_evProc_ipOverWdm

public Online_evProc_ipOverWdm()

Method Detail

finish

public String finish(StringBuilder output,
                     double simTime)

Overrides:

finish in class com.net2plan.interfaces.simulation.IEventProcessor

finishTransitory

public void finishTransitory(double simTime)

Overrides:

finishTransitory in class com.net2plan.interfaces.simulation.IEventProcessor

getDescription

public String getDescription()

Specified by:

getDescription in interface com.net2plan.internal.IExternal

Specified by:

getDescription in class com.net2plan.interfaces.simulation.IEventProcessor

getParameters

public List<com.net2plan.utils.Triple<String,String,String>> getParameters()

Specified by:

getParameters in interface com.net2plan.internal.IExternal

Specified by:

getParameters in class com.net2plan.interfaces.simulation.IEventProcessor

initialize

public void initialize(com.net2plan.interfaces.networkDesign.NetPlan initialNetPlan,
                       Map<String,String> algorithmParameters,
                       Map<String,String> simulationParameters,
                       Map<String,String> net2planParameters)

Specified by:

initialize in class com.net2plan.interfaces.simulation.IEventProcessor

processEvent

public void processEvent(com.net2plan.interfaces.networkDesign.NetPlan currentNetPlan,
                         com.net2plan.interfaces.simulation.SimEvent event)

Specified by:

processEvent in class com.net2plan.interfaces.simulation.IEventProcessor