[General]
network = ClockDriftShowcase
sim-time-limit = 0.1s
#abstract-config = true (requires omnet 7)

# disable legacy Ethernet
*.*.ethernet.typename = "EthernetLayer"

# avoid ARP
**.hasGlobalArp = true

# source applications
*.source*.numApps = 1
*.source*.app[*].typename = "UdpSourceApp"
*.source*.app[0].source.packetLength = 800B
*.source*.app[0].source.productionInterval = 20us
*.source*.app[0].io.destPort = 1000

*.source1.app[0].io.destAddress = "sink1"
*.source1.app[0].source.packetNameFormat = "source1-%c"

*.source2.app[0].io.destAddress = "sink2"
*.source2.app[0].source.initialProductionOffset = 10us
*.source2.app[0].source.packetNameFormat = "source2-%c"

# sink applications
*.sink*.numApps = 1
*.sink*.app[*].typename = "UdpSinkApp"
*.sink*.app[0].io.localPort = 1000

# gate schedule visualization
**.displayGateSchedules = true
**.gateScheduleVisualizer.height = 16

# Ethernet interface and queueing
*.*.eth[*].typename = "LayeredEthernetInterface"
*.*.eth[*].bitrate = 1Gbps
*.switch1.eth[0].macLayer.queue.typename = "GatingPriorityQueue"
*.switch1.eth[0].macLayer.queue.numQueues = 2
*.switch1.eth[0].macLayer.queue.classifier.typename = "ContentBasedClassifier"
*.switch1.eth[0].macLayer.queue.classifier.packetFilters = ["source1*", "source2*"]
*.switch1.eth[0].macLayer.queue.queue[*].typename = "DropTailQueue"
*.switch1.eth[0].macLayer.queue.gate[*].initiallyOpen = false
*.switch1.eth[0].macLayer.queue.gate[*].durations = [10us, 10us]
*.switch1.eth[0].macLayer.queue.gate[0].offset = 3.118us
*.switch1.eth[0].macLayer.queue.gate[1].offset = 13.118us

[Config NoClockDrift]
description = "Without clocks, network nodes are synchronized by simulation time"

[Config ConstantClockDrift]
description = "Clocks with constant drift rate diverge over time"

*.source*.clock.typename = "OscillatorBasedClock"
*.source*.clock.oscillator.typename = "ConstantDriftOscillator"
*.source1.clock.oscillator.driftRate = 500ppm
*.source2.clock.oscillator.driftRate = -400ppm
*.source*.app[0].source.clockModule = "^.^.clock"

*.switch1.clock.typename = "OscillatorBasedClock"
*.switch1.clock.oscillator.typename = "ConstantDriftOscillator"
*.switch1.clock.oscillator.driftRate = 300ppm
*.switch1.eth[0].macLayer.queue.gate[*].clockModule = "^.^.^.^.clock"

[Config RandomClockDrift]
description = "Clocks with random drift rate"

*.source*.clock.typename = "OscillatorBasedClock"
*.source*.clock.oscillator.typename = "RandomDriftOscillator"
*.source1.clock.oscillator.driftRateChange = uniform(-125ppm, 125ppm)
*.source2.clock.oscillator.driftRateChange = uniform(-100ppm, 100ppm)
*.source1.clock.oscillator.changeInterval = 0.1ms
*.source2.clock.oscillator.changeInterval = 0.1ms
*.source*.app[0].source.clockModule = "^.^.clock"

*.switch1.clock.typename = "OscillatorBasedClock"
*.switch1.clock.oscillator.typename = "RandomDriftOscillator"
*.switch1.clock.oscillator.driftRateChange = uniform(-75ppm, 75ppm)
*.switch1.clock.oscillator.changeInterval = 0.1ms
*.switch1.eth[0].macLayer.queue.gate[*].clockModule = "^.^.^.^.clock"

[Config OutOfBandSyncBase]
description = "Base config for out-of-band synchronization"
#abstract-config = true (requires omnet 7)

*.source*.clock.typename = "SettableClock"
*.source*.clock.defaultOverdueClockEventHandlingMode = "execute"

*.source*.numApps = 2
*.source*.app[1].typename = "SimpleClockSynchronizer"
*.source*.app[1].masterClockModule = "^.^.switch1.clock"
*.source*.app[1].slaveClockModule = "^.clock"
*.source*.app[1].synchronizationInterval = 500us
*.source*.app[1].synchronizationClockTimeError = uniform(-10ns, 10ns)

[Config ConstantClockDriftOutOfBandSync]
description = "Clocks are periodically synchronized out-of-band, without a real protocol. Clocks use constant drift oscillators."
extends = OutOfBandSyncBase, ConstantClockDrift

[Config RandomClockDriftOutOfBandSync]
description = "Clocks are periodically synchronized out-of-band, without a real protocol. Clocks use random drift oscillators."
extends = OutOfBandSyncBase, RandomClockDrift

[Config RandomClockDriftGptpSync]
description = "Clocks are periodically synchronized using gPTP"
extends = RandomClockDrift

*.switch*.hasGptp = true

*.switch*.gptp.syncInterval = 500us
*.switch*.gptp.pdelayInterval = 1ms
*.switch*.gptp.pdelayInitialOffset = 0ms

*.switch*.clock.typename = "SettableClock"

*.switch1.gptp.gptpNodeType = "MASTER_NODE"
*.switch1.gptp.masterPorts = ["eth0", "eth1", "eth2"]  # eth*

*.switch2.gptp.gptpNodeType = "SLAVE_NODE"
*.switch2.gptp.slavePort = "eth0"

*.source*.clock.typename = "SettableClock"

*.source*.numApps = 2
*.source*.app[1].typename = "Gptp"
*.source*.app[1].gptpNodeType = "SLAVE_NODE"
*.source*.app[1].slavePort = "eth0"
*.source*.app[1].syncInterval = 500us
*.source*.app[1].pdelayInterval = 1ms