DiffservQueue

Package: inet.networklayer.diffserv

DiffservQueue

compound module

This is an example queue that can be used in interfaces of DS core and edge nodes to support the AFxy (RFC 2597) and EF (RFC 3246) PHBs.

The incoming packets are first classified according to their DSCP field. DSCPs other than AFxy and EF are handled as BE (best effort).

EF packets are stored in a dedicated queue and served first when a packet is requested. Because they can preempt the other queues, the rate of the EF packets should be limited to a fraction of the bandwidth of the link. This is achieved by metering the EF traffic with a token bucket meter and dropping packets that do not conform to the traffic profile.

There are other queues for AFx classes and BE. The AFx queues use RED to implement 3 different drop priorities within the class. BE packets are stored in a drop-tail queue. Packets from AFxy and BE queues are scheduled by a WRR scheduler, which ensures that the remaining bandwidth is allocated among the classes according to the specified weights.

<b>See also:</b> ~AFxyQueue

classifier : BehaviorAggregateClassifier Reads the DSCP (lower six bits of ToS/TrafficClass) from the received datagram, and forwards the... Source: classifier: BehaviorAggregateClassifier { dscps = "EF AF11 AF12 AF13 AF21 AF22 AF23 AF31 AF32 AF33 AF41 AF42 AF43"; @display("p=100,330"); } efMeter : TokenBucketMeter Simple token bucket meter. Source: efMeter: TokenBucketMeter { cir = default("10%"); // Reserved EF bandwidth as a percentage of the datarate of the interface cbs = default(5000B); // 5 1000B packets @display("p=250,130"); } sink : PassivePacketSink A passive packet sink which is pushed with packets by the connected packet producer. Source: sink: PassivePacketSink { @display("p=400,80"); } efQueue : DropTailQueue A limited packet queue that drops packets at the tail of the queue. Source: efQueue: DropTailQueue { packetCapacity = default(5); // Keep low for low delay and jitter @display("p=400,180"); } af1xQueue : AFxyQueue This is an example queue that implements one class of the Assured Forwarding PHB group (RFC 2597). Source: af1xQueue: AFxyQueue { @display("p=250,230"); } af2xQueue : AFxyQueue This is an example queue that implements one class of the Assured Forwarding PHB group (RFC 2597). Source: af2xQueue: AFxyQueue { @display("p=250,330"); } af3xQueue : AFxyQueue This is an example queue that implements one class of the Assured Forwarding PHB group (RFC 2597). Source: af3xQueue: AFxyQueue { @display("p=250,430"); } af4xQueue : AFxyQueue This is an example queue that implements one class of the Assured Forwarding PHB group (RFC 2597). Source: af4xQueue: AFxyQueue { @display("p=250,530"); } beQueue : DropTailQueue A limited packet queue that drops packets at the tail of the queue. Source: beQueue: DropTailQueue { @display("p=250,630"); } wrr : WrrScheduler Implements weighted round-robin scheduling. Source: wrr: WrrScheduler { weights = default("1 1 1 1 1"); @display("p=400,330"); } priority : PriorityScheduler This scheduler pulls packets from the first non-empty among its connected packet providers. Source: priority: PriorityScheduler { @display("p=550,330"); }

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.

Extends

Name Type Description
CompoundPacketQueueBase compound module

This compound module serves as a base module for complex packet queues formed by combining several queueing components.

Parameters

Name Type Default value Description
displayStringTextFormat string "contains %p pk (%l) pushed %u created %c\n pulled %o removed %r dropped %d"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
packetCapacity int -1

Maximum number of packets in the queue, no limit by default
dataCapacity int -1b

Maximum total length of packets in the queue, no limit by default
dropperClass string ""

Determines which packets are dropped when the queue is overloaded, packets are not dropped by default; the parameter must be the name of a C++ class which implements the IPacketDropperFunction C++ interface and is registered via Register_Class
interfaceTableModule string

Properties

Name Value Description
class CompoundPacketQueueBase
display i=block/queue
defaultStatistic queueLength:vector

Gates

Name Direction Size Description
in input
out output

Signals

Name Type Unit Description
packetRemoved inet::Packet
packetPushStarted inet::Packet
packetDropped inet::Packet
packetPushEnded inet::Packet?
packetPulled inet::Packet

Statistics

Name Title Source Record Unit Interpolation Mode Description
queueBitLength queue bit length warmup(atomic(constant0(localSignal(packetPushEnded)) + sum(packetLength(localSignal(packetPushStarted))) - sum(packetLength(localSignal(packetPulled))) - sum(packetLength(localSignal(packetRemoved))) - sum(packetLength(localSignal(packetDropped))))) last, max, timeavg, vector b sample-hold

the statistical value is the total bit length of all packets in the queue
queueLength queue length warmup(atomic(constant0(localSignal(packetPushEnded)) + count(localSignal(packetPushStarted)) - count(localSignal(packetPulled)) - count(localSignal(packetRemoved)) - count(localSignal(packetDropped)))) last, max, timeavg, vector pk sample-hold

the statistical value is the number of packets in the queue
droppedPacketsQueueOverflow dropped packets: queue overflow packetDropReasonIsQueueOverflow(localSignal(packetDropped)) count pk none

the statistical value is the packet that is dropped due to queue overflow
queueingTime queueing times queueingTime(localSignal(packetPulled)) histogram, vector s none

the statistical value is the queueing time of packets
incomingDataRate incoming datarate throughput(localSignal(packetPushStarted)) vector bps linear

the statistical value is the data rate of the incoming packets
flowQueueingTime flow queueing times queueingTime(demuxFlow(localSignal(packetPulled))) histogram, vector s none

the statistical value is the flow specific queueing time of packets
incomingPacketLengths incoming packet lengths packetLength(localSignal(packetPushStarted)) sum, histogram, vector b none

the statistical value is the length of the incoming packet
flowIncomingDataRate flow specific incoming data rate throughput(flowPacketLength(demuxFlow(localSignal(packetPushStarted)))) vector bps linear

the statistical value is the flow specific data rate of the incoming packets
outgoingDataRate outgoing datarate throughput(localSignal(packetPulled)) vector bps linear

the statistical value is the data rate of the outgoing packets
outgoingPacketLengths outgoing packet lengths packetLength(localSignal(packetPulled)) sum, histogram, vector b none

the statistical value is the length of the outgoing packet
droppedPacketLengthsQueueOverflow dropped packet lengths: queue overflow packetLength(packetDropReasonIsQueueOverflow(localSignal(packetDropped))) sum, vector b none

the statistical value is the length of the packet that is dropped due to queue overflow
flowOutgoingDataRate flow specific outgoing data rate throughput(flowPacketLength(demuxFlow(localSignal(packetPulled)))) vector bps linear

the statistical value is the flow specific data rate of the outgoing packets
incomingPackets incoming packets localSignal(packetPushStarted) count pk

the statistical value is the incoming packet
outgoingPackets outgoing packets localSignal(packetPulled) count pk

the statistical value is the outgoing packet

Unassigned submodule parameters

Name Type Default value Description
classifier.displayStringTextFormat string "classified %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
classifier.reverseOrder bool false
efMeter.displayStringTextFormat string ""

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
efMeter.interfaceTableModule string

The path to the InterfaceTable module
efMeter.cir string "10%"

Committed information rate, either absolute bitrate (e.g. "100kbps") or relative to the link's datarate (e.g. "20%")
efMeter.cbs int 5000B

Committed burst size
efMeter.colorAwareMode bool false

Enables color-aware mode
sink.displayStringTextFormat string "received %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
sink.clockModule string ""

Relative path of a module that implements IClock(1,2); optional
sink.initialConsumptionOffset double 0s

Initial duration before which packets are not consumed
sink.consumptionInterval double 0s

Elapsed time between subsequent packets allowed to be pushed by the connected packet producer, 0 means any number of packets can be pushed at the same simulation time
sink.scheduleForAbsoluteTime bool true

When a clock is used, "relative" means that setting the clock will not affect the simulation time of the event
efQueue.displayStringTextFormat string "contains %p pk (%l) pushed %u\npulled %o removed %r dropped %d"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
efQueue.packetCapacity int 5

Maximum number of packets in the queue, no limit by default
efQueue.dataCapacity int -1b

Maximum total length of packets in the queue, no limit by default
efQueue.dropperClass string "inet::queueing::PacketAtCollectionEndDropper"

Determines which packets are dropped when the queue is overloaded, packets are not dropped by default; the parameter must be the name of a C++ class which implements the IPacketDropperFunction C++ interface and is registered via Register_Class
efQueue.comparatorClass string ""

Determines the order of packets in the queue, insertion order by default; the parameter must be the name of a C++ class which implements the IPacketComparatorFunction C++ interface and is registered via Register_Class
efQueue.bufferModule string ""

Relative module path to the IPacketBuffer module used by this queue, implicit buffer by default
af1xQueue.red1.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af1xQueue.red1.backpressure bool false
af1xQueue.red1.pkrate double 150

Average packet rate for calculations when queue is empty
af1xQueue.red1.useEcn bool false

If enabled, packets are marked with ECN if applicable
af1xQueue.red1.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af1xQueue.red2.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af1xQueue.red2.backpressure bool false
af1xQueue.red2.pkrate double 150

Average packet rate for calculations when queue is empty
af1xQueue.red2.useEcn bool false

If enabled, packets are marked with ECN if applicable
af1xQueue.red2.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af1xQueue.red3.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af1xQueue.red3.backpressure bool false
af1xQueue.red3.pkrate double 150

Average packet rate for calculations when queue is empty
af1xQueue.red3.useEcn bool false

If enabled, packets are marked with ECN if applicable
af1xQueue.red3.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af1xQueue.mux.displayStringTextFormat string "passed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af1xQueue.mux.forwardServiceRegistration bool true
af1xQueue.mux.forwardProtocolRegistration bool true
af1xQueue.queue.displayStringTextFormat string "contains %p pk (%l) pushed %u\npulled %o removed %r dropped %d"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af1xQueue.queue.packetCapacity int -1

Maximum number of packets in the queue, no limit by default
af1xQueue.queue.dataCapacity int -1b

Maximum total length of packets in the queue, no limit by default
af1xQueue.queue.dropperClass string ""

Determines which packets are dropped when the queue is overloaded, packets are not dropped by default; the parameter must be the name of a C++ class which implements the IPacketDropperFunction C++ interface and is registered via Register_Class
af1xQueue.queue.comparatorClass string ""

Determines the order of packets in the queue, insertion order by default; the parameter must be the name of a C++ class which implements the IPacketComparatorFunction C++ interface and is registered via Register_Class
af1xQueue.queue.bufferModule string ""

Relative module path to the IPacketBuffer module used by this queue, implicit buffer by default
af2xQueue.red1.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af2xQueue.red1.backpressure bool false
af2xQueue.red1.pkrate double 150

Average packet rate for calculations when queue is empty
af2xQueue.red1.useEcn bool false

If enabled, packets are marked with ECN if applicable
af2xQueue.red1.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af2xQueue.red2.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af2xQueue.red2.backpressure bool false
af2xQueue.red2.pkrate double 150

Average packet rate for calculations when queue is empty
af2xQueue.red2.useEcn bool false

If enabled, packets are marked with ECN if applicable
af2xQueue.red2.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af2xQueue.red3.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af2xQueue.red3.backpressure bool false
af2xQueue.red3.pkrate double 150

Average packet rate for calculations when queue is empty
af2xQueue.red3.useEcn bool false

If enabled, packets are marked with ECN if applicable
af2xQueue.red3.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af2xQueue.mux.displayStringTextFormat string "passed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af2xQueue.mux.forwardServiceRegistration bool true
af2xQueue.mux.forwardProtocolRegistration bool true
af2xQueue.queue.displayStringTextFormat string "contains %p pk (%l) pushed %u\npulled %o removed %r dropped %d"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af2xQueue.queue.packetCapacity int -1

Maximum number of packets in the queue, no limit by default
af2xQueue.queue.dataCapacity int -1b

Maximum total length of packets in the queue, no limit by default
af2xQueue.queue.dropperClass string ""

Determines which packets are dropped when the queue is overloaded, packets are not dropped by default; the parameter must be the name of a C++ class which implements the IPacketDropperFunction C++ interface and is registered via Register_Class
af2xQueue.queue.comparatorClass string ""

Determines the order of packets in the queue, insertion order by default; the parameter must be the name of a C++ class which implements the IPacketComparatorFunction C++ interface and is registered via Register_Class
af2xQueue.queue.bufferModule string ""

Relative module path to the IPacketBuffer module used by this queue, implicit buffer by default
af3xQueue.red1.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af3xQueue.red1.backpressure bool false
af3xQueue.red1.pkrate double 150

Average packet rate for calculations when queue is empty
af3xQueue.red1.useEcn bool false

If enabled, packets are marked with ECN if applicable
af3xQueue.red1.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af3xQueue.red2.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af3xQueue.red2.backpressure bool false
af3xQueue.red2.pkrate double 150

Average packet rate for calculations when queue is empty
af3xQueue.red2.useEcn bool false

If enabled, packets are marked with ECN if applicable
af3xQueue.red2.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af3xQueue.red3.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af3xQueue.red3.backpressure bool false
af3xQueue.red3.pkrate double 150

Average packet rate for calculations when queue is empty
af3xQueue.red3.useEcn bool false

If enabled, packets are marked with ECN if applicable
af3xQueue.red3.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af3xQueue.mux.displayStringTextFormat string "passed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af3xQueue.mux.forwardServiceRegistration bool true
af3xQueue.mux.forwardProtocolRegistration bool true
af3xQueue.queue.displayStringTextFormat string "contains %p pk (%l) pushed %u\npulled %o removed %r dropped %d"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af3xQueue.queue.packetCapacity int -1

Maximum number of packets in the queue, no limit by default
af3xQueue.queue.dataCapacity int -1b

Maximum total length of packets in the queue, no limit by default
af3xQueue.queue.dropperClass string ""

Determines which packets are dropped when the queue is overloaded, packets are not dropped by default; the parameter must be the name of a C++ class which implements the IPacketDropperFunction C++ interface and is registered via Register_Class
af3xQueue.queue.comparatorClass string ""

Determines the order of packets in the queue, insertion order by default; the parameter must be the name of a C++ class which implements the IPacketComparatorFunction C++ interface and is registered via Register_Class
af3xQueue.queue.bufferModule string ""

Relative module path to the IPacketBuffer module used by this queue, implicit buffer by default
af4xQueue.red1.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af4xQueue.red1.backpressure bool false
af4xQueue.red1.pkrate double 150

Average packet rate for calculations when queue is empty
af4xQueue.red1.useEcn bool false

If enabled, packets are marked with ECN if applicable
af4xQueue.red1.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af4xQueue.red2.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af4xQueue.red2.backpressure bool false
af4xQueue.red2.pkrate double 150

Average packet rate for calculations when queue is empty
af4xQueue.red2.useEcn bool false

If enabled, packets are marked with ECN if applicable
af4xQueue.red2.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af4xQueue.red3.displayStringTextFormat string "dropped %d/%p pk (%k/%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af4xQueue.red3.backpressure bool false
af4xQueue.red3.pkrate double 150

Average packet rate for calculations when queue is empty
af4xQueue.red3.useEcn bool false

If enabled, packets are marked with ECN if applicable
af4xQueue.red3.packetCapacity int int(maxth)

Packets are dropped if queue length is greater
af4xQueue.mux.displayStringTextFormat string "passed %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af4xQueue.mux.forwardServiceRegistration bool true
af4xQueue.mux.forwardProtocolRegistration bool true
af4xQueue.queue.displayStringTextFormat string "contains %p pk (%l) pushed %u\npulled %o removed %r dropped %d"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
af4xQueue.queue.packetCapacity int -1

Maximum number of packets in the queue, no limit by default
af4xQueue.queue.dataCapacity int -1b

Maximum total length of packets in the queue, no limit by default
af4xQueue.queue.dropperClass string ""

Determines which packets are dropped when the queue is overloaded, packets are not dropped by default; the parameter must be the name of a C++ class which implements the IPacketDropperFunction C++ interface and is registered via Register_Class
af4xQueue.queue.comparatorClass string ""

Determines the order of packets in the queue, insertion order by default; the parameter must be the name of a C++ class which implements the IPacketComparatorFunction C++ interface and is registered via Register_Class
af4xQueue.queue.bufferModule string ""

Relative module path to the IPacketBuffer module used by this queue, implicit buffer by default
beQueue.displayStringTextFormat string "contains %p pk (%l) pushed %u\npulled %o removed %r dropped %d"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
beQueue.packetCapacity int 100

Maximum number of packets in the queue, no limit by default
beQueue.dataCapacity int -1b

Maximum total length of packets in the queue, no limit by default
beQueue.dropperClass string "inet::queueing::PacketAtCollectionEndDropper"

Determines which packets are dropped when the queue is overloaded, packets are not dropped by default; the parameter must be the name of a C++ class which implements the IPacketDropperFunction C++ interface and is registered via Register_Class
beQueue.comparatorClass string ""

Determines the order of packets in the queue, insertion order by default; the parameter must be the name of a C++ class which implements the IPacketComparatorFunction C++ interface and is registered via Register_Class
beQueue.bufferModule string ""

Relative module path to the IPacketBuffer module used by this queue, implicit buffer by default
wrr.displayStringTextFormat string "scheduled %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
wrr.reverseOrder bool false
wrr.weights string "1 1 1 1 1"
priority.displayStringTextFormat string "scheduled %p pk (%l)"

Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
priority.reverseOrder bool false

Source code

//
// This is an example queue that can be used in
// interfaces of DS core and edge nodes to support
// the AFxy (RFC 2597) and EF (RFC 3246) PHBs.
//
// The incoming packets are first classified according to
// their DSCP field. DSCPs other than AFxy and EF are handled
// as BE (best effort).
//
// EF packets are stored in a dedicated queue and served first
// when a packet is requested. Because they can preempt the other
// queues, the rate of the EF packets should be limited to a fraction
// of the bandwidth of the link. This is achieved by metering the EF
// traffic with a token bucket meter and dropping packets that
// do not conform to the traffic profile.
//
// There are other queues for AFx classes and BE. The AFx queues
// use RED to implement 3 different drop priorities within the class.
// BE packets are stored in a drop-tail queue.
// Packets from AFxy and BE queues are scheduled by a WRR scheduler,
// which ensures that the remaining bandwidth is allocated among the classes
// according to the specified weights.
//
// @see ~AFxyQueue
//
module DiffservQueue extends CompoundPacketQueueBase
{
    parameters:
        string interfaceTableModule;
        *.interfaceTableModule = default(absPath(this.interfaceTableModule));
    submodules:
        classifier: BehaviorAggregateClassifier {
            dscps = "EF AF11 AF12 AF13 AF21 AF22 AF23 AF31 AF32 AF33 AF41 AF42 AF43";
            @display("p=100,330");
        }
        efMeter: TokenBucketMeter {
            cir = default("10%"); // Reserved EF bandwidth as a percentage of the datarate of the interface
            cbs = default(5000B); // 5 1000B packets
            @display("p=250,130");
        }
        sink: PassivePacketSink {
            @display("p=400,80");
        }
        efQueue: DropTailQueue {
            packetCapacity = default(5); // Keep low for low delay and jitter
            @display("p=400,180");
        }
        af1xQueue: AFxyQueue {
            @display("p=250,230");
        }
        af2xQueue: AFxyQueue {
            @display("p=250,330");
        }
        af3xQueue: AFxyQueue {
            @display("p=250,430");
        }
        af4xQueue: AFxyQueue {
            @display("p=250,530");
        }
        beQueue: DropTailQueue {
            @display("p=250,630");
        }
        wrr: WrrScheduler {
            weights = default("1 1 1 1 1");
            @display("p=400,330");
        }
        priority: PriorityScheduler {
            @display("p=550,330");
        }

    connections:
        in --> classifier.in;
        classifier.out++ --> efMeter.in;
        classifier.out++ --> af1xQueue.afx1In;
        classifier.out++ --> af1xQueue.afx2In;
        classifier.out++ --> af1xQueue.afx3In;
        classifier.out++ --> af2xQueue.afx1In;
        classifier.out++ --> af2xQueue.afx2In;
        classifier.out++ --> af2xQueue.afx3In;
        classifier.out++ --> af3xQueue.afx1In;
        classifier.out++ --> af3xQueue.afx2In;
        classifier.out++ --> af3xQueue.afx3In;
        classifier.out++ --> af4xQueue.afx1In;
        classifier.out++ --> af4xQueue.afx2In;
        classifier.out++ --> af4xQueue.afx3In;
        classifier.defaultOut --> beQueue.in;

        efMeter.greenOut --> { @display("ls=green"); } --> efQueue.in;
        efMeter.redOut --> { @display("ls=red"); } --> sink.in;

        af1xQueue.out --> wrr.in++;
        af2xQueue.out --> wrr.in++;
        af3xQueue.out --> wrr.in++;
        af4xQueue.out --> wrr.in++;
        beQueue.out --> wrr.in++;
        efQueue.out --> priority.in++;
        wrr.out --> priority.in++;
        priority.out --> out;
}
File: src/inet/networklayer/diffserv/DiffservQueue.ned

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