- #--------------------------------------------------------------------------------
- # cbr-tb.tcl
- # Author: Jeremy Ethridge.
- # Dates: June 29-July 5, 1999.
- # Notes: A DS-RED script that uses CBR traffic agents and the Token Bucket policer.
- #
- # ----
- # |s1|-----------
- # ---- 10 Mb
- # 5 ms
- # ---- ------ ---- ------
- # |e1|-----------|core|----------|e2|-----------|dest|
- # /---- 10 Mb ------ 5 Mb ---- 10 Mb ------
- # / 5 ms 5 ms 5 ms
- # ---- /
- # |s2|-----------
- # ---- 10 Mb
- # 5 ms
- #
- #--------------------------------------------------------------------------------
- set ns [new Simulator]
- set cir0 1000000
- set cbs0 3000
- set rate0 2000000
- set cir1 1000000
- set cbs1 10000
- set rate1 3000000
- set testTime 85.0
- set packetSize 1000
- # Set up the network topology shown at the top of this file:
- set s1 [$ns node]
- set s2 [$ns node]
- set e1 [$ns node]
- set core [$ns node]
- set e2 [$ns node]
- set dest [$ns node]
- $ns duplex-link $s1 $e1 10Mb 5ms DropTail
- $ns duplex-link $s2 $e1 10Mb 5ms DropTail
- $ns simplex-link $e1 $core 10Mb 5ms dsRED/edge
- $ns simplex-link $core $e1 10Mb 5ms dsRED/core
- $ns simplex-link $core $e2 5Mb 5ms dsRED/core
- $ns simplex-link $e2 $core 5Mb 5ms dsRED/edge
- $ns duplex-link $e2 $dest 10Mb 5ms DropTail
- $ns duplex-link-op $s1 $e1 orient down-right
- $ns duplex-link-op $s2 $e1 orient up-right
- $ns duplex-link-op $e1 $core orient right
- $ns duplex-link-op $core $e2 orient right
- $ns duplex-link-op $e2 $dest orient right
- set qE1C [[$ns link $e1 $core] queue]
- set qE2C [[$ns link $e2 $core] queue]
- set qCE1 [[$ns link $core $e1] queue]
- set qCE2 [[$ns link $core $e2] queue]
- # Set DS RED parameters from Edge1 to Core:
- $qE1C meanPktSize $packetSize
- $qE1C set numQueues_ 1
- $qE1C setNumPrec 2
- $qE1C addPolicyEntry [$s1 id] [$dest id] TokenBucket 10 $cir0 $cbs0
- $qE1C addPolicyEntry [$s2 id] [$dest id] TokenBucket 10 $cir1 $cbs1
- $qE1C addPolicerEntry TokenBucket 10 11
- $qE1C addPHBEntry 10 0 0
- $qE1C addPHBEntry 11 0 1
- $qE1C configQ 0 0 20 40 0.02
- $qE1C configQ 0 1 10 20 0.10
- # Set DS RED parameters from Edge2 to Core:
- $qE2C meanPktSize $packetSize
- $qE2C set numQueues_ 1
- $qE2C setNumPrec 2
- $qE2C addPolicyEntry [$dest id] [$s1 id] TokenBucket 10 $cir0 $cbs0
- $qE2C addPolicyEntry [$dest id] [$s2 id] TokenBucket 10 $cir1 $cbs1
- $qE2C addPolicerEntry TokenBucket 10 11
- $qE2C addPHBEntry 10 0 0
- $qE2C addPHBEntry 11 0 1
- $qE2C configQ 0 0 20 40 0.02
- $qE2C configQ 0 1 10 20 0.10
- # Set DS RED parameters from Core to Edge1:
- $qCE1 meanPktSize $packetSize
- $qCE1 set numQueues_ 1
- $qCE1 setNumPrec 2
- $qCE1 addPHBEntry 10 0 0
- $qCE1 addPHBEntry 11 0 1
- $qCE1 configQ 0 0 20 40 0.02
- $qCE1 configQ 0 1 10 20 0.10
- # Set DS RED parameters from Core to Edge2:
- $qCE2 meanPktSize $packetSize
- $qCE2 set numQueues_ 1
- $qCE2 setNumPrec 2
- $qCE2 addPHBEntry 10 0 0
- $qCE2 addPHBEntry 11 0 1
- $qCE2 configQ 0 0 20 40 0.02
- $qCE2 configQ 0 1 10 20 0.10
- # Set up one CBR connection between each source and the destination:
- set udp0 [new Agent/UDP]
- $ns attach-agent $s1 $udp0
- set cbr0 [new Application/Traffic/CBR]
- $cbr0 attach-agent $udp0
- $cbr0 set packet_size_ $packetSize
- $udp0 set packetSize_ $packetSize
- $cbr0 set rate_ $rate0
- set null0 [new Agent/Null]
- $ns attach-agent $dest $null0
- $ns connect $udp0 $null0
- set udp1 [new Agent/UDP]
- $ns attach-agent $s2 $udp1
- set cbr1 [new Application/Traffic/CBR]
- $cbr1 attach-agent $udp1
- $cbr1 set packet_size_ $packetSize
- $udp1 set packetSize_ $packetSize
- $cbr1 set rate_ $rate1
- set null1 [new Agent/Null]
- $ns attach-agent $dest $null1
- $ns connect $udp1 $null1
- proc finish {} {
- global ns
- exit 0
- }
- $qE1C printPolicyTable
- $qE1C printPolicerTable
- $ns at 0.0 "$cbr0 start"
- $ns at 0.0 "$cbr1 start"
- $ns at 20.0 "$qCE2 printStats"
- $ns at 40.0 "$qCE2 printStats"
- $ns at 60.0 "$qCE2 printStats"
- $ns at 80.0 "$qCE2 printStats"
- $ns at $testTime "$cbr0 stop"
- $ns at $testTime "$cbr1 stop"
- $ns at [expr $testTime + 1.0] "finish"
- $ns run