Compound Module OverlayRouter

Package: oversim.underlay.inetunderlay
File: src/underlay/inetunderlay/OverlayRouter.ned

Router in the overlay network

NAMTraceWriter NotificationBoard InterfaceTable RoutingTable ITier ITier ITier IOverlay UDP NetworkLayer PPPInterface NeighborCache BootstrapList CryptoModule

Usage diagram:

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram:

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

Networks:

InetUnderlayNetwork (network)

The InetUnderlay ned-file

See also: InetUnderlayConfigurator

Parameters:

Name Type Default value Description
overlayType string

overlay protocol compound module to use

tier1Type string

the application on top off the overly used in the simulation

tier2Type string

tier 2 module to use

tier3Type string

tier 3 module to use

numTiers int

number of tiers

routingFile string ""

Properties:

Name Value Description
node
display bgb=360,476;i=abstract/router

Gates:

Name Direction Size Description
pppg [ ] inout

gates from overlay

ethg [ ] inout

placeholder for zero-size vector

overlayNeighborArrowIn [ ] input

incoming gate for visualizing overlay neighborship with connection arrows

overlayNeighborArrowOut [ ] output

incoming gate for visualizing overlay neighborship with connection arrows

Unassigned submodule parameters:

Name Type Default value Description
networkLayer.ip.procDelay double 0s
networkLayer.arp.retryTimeout double 1s

number seconds ARP waits between retries to resolve an IP address

networkLayer.arp.retryCount int 3

number of times ARP will attempt to resolve an IP address

networkLayer.arp.cacheTimeout double 120s

number seconds unused entries in the cache will time out

ppp.ppp.mtu int 4470
neighborCache.rpcUdpTimeout double

default timeout value for direct RPCs

neighborCache.rpcKeyTimeout double

default timeout value for routed RPCs

neighborCache.optimizeTimeouts bool

calculate timeouts from measured RTTs and network coordinates

neighborCache.rpcExponentialBackoff bool

if true, doubles the timeout for every retransmission

neighborCache.debugOutput bool

enable debug output

neighborCache.enableNeighborCache bool

use neighbor cache for reducing ping traffic?

neighborCache.rttExpirationTime double

expiration of the validity of the measured rtts

neighborCache.maxSize double

maximum size of the cache

neighborCache.rttHistory int
neighborCache.timeoutAccuracyLimit double
neighborCache.defaultQueryType string
neighborCache.defaultQueryTypeI string
neighborCache.defaultQueryTypeQ string
neighborCache.doDiscovery bool
neighborCache.ncsType string
neighborCache.npsDimensions int

gnp settings

neighborCache.npsCoordCalcRuns int
neighborCache.landmarkTimeout double
neighborCache.npsMaxLayer int

nps settings

neighborCache.showVivaldiPosition bool

vivaldi settings

neighborCache.vivaldiErrorConst double
neighborCache.vivaldiCoordConst double
neighborCache.vivaldiDimConst double
neighborCache.vivaldiEnableHeightVector bool
neighborCache.vivaldiLossConst double

svivaldi settings

neighborCache.lossResetLimit double
bootstrapList.rpcUdpTimeout double

default timeout value for direct RPCs

bootstrapList.rpcKeyTimeout double

default timeout value for routed RPCs

bootstrapList.optimizeTimeouts bool

calculate timeouts from measured RTTs and network coordinates

bootstrapList.rpcExponentialBackoff bool

if true, doubles the timeout for every retransmission

bootstrapList.debugOutput bool

enable debug output

bootstrapList.mergeOverlayPartitions bool

if true, detect and merge overlay partitions

bootstrapList.maintainList bool

maintain a list of bootstrap candidates and check them periodically

cryptoModule.keyFile string

the name of the file containing the public key pair used to sign messages

Source code:

//
// Router in the overlay network
//
module OverlayRouter
{
    parameters:
        @node();
        string overlayType;    // overlay protocol compound module to use
        string tier1Type;    // the application on top off the overly used in the simulation
        string tier2Type;    // tier 2 module to use
        string tier3Type;    // tier 3 module to use
        int numTiers;    // number of tiers

        string routingFile = default("");
        @display("bgb=360,476;i=abstract/router");
    gates:
        inout pppg[];    // gates from overlay
        inout ethg[];    // placeholder for zero-size vector
        input overlayNeighborArrowIn[]; // incoming gate for visualizing overlay neighborship with connection arrows
        output overlayNeighborArrowOut[]; // incoming gate for visualizing overlay neighborship with connection arrows

    submodules:
        namTrace: NAMTraceWriter {
            parameters:
                namid = -1; // auto
                @display("p=84,422");
        }
        notificationBoard: NotificationBoard {
            parameters:
                @display("p=84,214");
        }
        interfaceTable: InterfaceTable {
            parameters:
                @display("p=84,278");
        }
        routingTable: RoutingTable {
            parameters:
                IPForward = true;
                routerId = "auto";
                routingFile = routingFile;    // use predefined routing file if given
                @display("p=84,348");
        }
        tier3: <tier3Type> like ITier {
            parameters:
                @display("p=48,64");
        }
        tier2: <tier2Type> like ITier {
            parameters:
                @display("p=139,96");
        }
        tier1: <tier1Type> like ITier {
            parameters:
                @display("p=218,130");
        }
        overlay: <overlayType> like IOverlay {
            parameters:
                @display("p=282,184");
        }
        udp: UDP {
            parameters:
                @display("p=282,262");
        }
        networkLayer: NetworkLayer {
            parameters:
                proxyARP = false;    // sets proxy \ARP mode (replying to \ARP requests for the addresses for which a routing table entry exists)
                @display("p=282,340;q=queue");
            gates:
                ifIn[sizeof(pppg)+sizeof(ethg)];
                ifOut[sizeof(pppg)+sizeof(ethg)];
        }
        ppp[sizeof(pppg)]: PPPInterface {
            parameters:
                @display("p=282,422,row,90;q=txQueue");
        }
        neighborCache: NeighborCache {
            parameters:
                @display("p=168,422");
        }
        bootstrapList: BootstrapList {
            parameters:
                @display("p=168,278");

        }
        cryptoModule: CryptoModule {
            parameters:
                @display("p=168,348");
        }
    connections allowunconnected:
        tier1.to_lowerTier --> overlay.appIn if numTiers>0;
        tier1.from_lowerTier <-- overlay.appOut if numTiers>0;
        tier1.udpOut --> udp.appIn++ if numTiers>0;
        udp.appOut++ --> tier1.udpIn if numTiers>0;

        tier2.to_lowerTier --> tier1.from_upperTier if numTiers > 1;
        tier2.from_lowerTier <-- tier1.to_upperTier if numTiers > 1;
        tier2.udpOut --> udp.appIn++ if numTiers>1;
        udp.appOut++ --> tier2.udpIn if numTiers>1;

        tier3.to_lowerTier --> tier2.from_upperTier if numTiers > 2;
        tier3.from_lowerTier <-- tier2.to_upperTier if numTiers > 2;
        tier3.udpOut --> udp.appIn++ if numTiers>2;
        udp.appOut++ --> tier3.udpIn if numTiers>2;

        overlay.udpOut --> udp.appIn++;
        overlay.udpIn <-- udp.appOut++;

        bootstrapList.udpOut --> udp.appIn++;
        bootstrapList.udpIn <-- udp.appOut++;

        udp.ipOut --> networkLayer.udpIn;
        udp.ipIn <-- networkLayer.udpOut;

        // connections to network outside
        for i=0..sizeof(pppg)-1 {
            pppg[i] <--> ppp[i].phys;
            ppp[i].netwOut --> networkLayer.ifIn[i];
            ppp[i].netwIn <-- networkLayer.ifOut[i];
        }

}