Hi Anjali,

You can test CoDel on wired as well as wireless networks.

CoDel's code is available for Linux, ns-2 and ns-3.

See the following link for more details:

http://www.bufferbloat.net/projects/codel/wiki/Wiki/#Simulations

Hope it helps.

Best Regards,
Mohit P. Tahiliani

On Thu, Feb 19, 2015 at 12:50 PM, <codel-request@lists.bufferbloat.net>
wrote:

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> Today's Topics:
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>    1. tcl code of CoDel (Anjali Chawla)
>    2. Codel code (kanu monga)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 19 Feb 2015 11:59:50 +0530
> From: Anjali Chawla <anjaliachawla013@gmail.com>
> To: codel@lists.bufferbloat.net
> Subject: [Codel] tcl code of CoDel
> Message-ID:
>         <CAL6QuG_pujPYrB6r0gcOhyPUgy6SV0gGFCTfsuQ_i35E=
> qYsjQ@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi
> i want to know can we test CoDel with wired network???
> or should we go for wireless only???
> anybody please reply because i am new to all this.
> your suggestions can help me in taking one step further.
> Thanks
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> Message: 2
> Date: Thu, 19 Feb 2015 12:49:34 +0530
> From: kanu monga <kanumonga013@gmail.com>
> To: codel@lists.bufferbloat.net
> Subject: [Codel] Codel code
> Message-ID:
>         <CAJ0uZqx6aWUTEuHHAn1g--5H3nwQv-mR8GbWD7wubt=
> H0fB3+g@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> is there anyone who can help me in understanding tcl code of codel(given
> below)
> This one is quite complex for me.
> please help if you can.
> Thanks in advance.
>
> ###################################################################
>
>
> # ns codel.tcl f w c {b}Mb s d r
> # where:
> # f = # ftps
> # w = # PackMime connections per second
> # c = # CBRs
> # b = bottleneck bandwidth in Mbps
> # s = filesize for ftp, -1 for infinite
> # d = dynamic bandwidth, if non-zero, changes (kind of kludgey)
> # have to set the specific change ratios in this file (below)
> # r = number of "reverse" ftps
>
> set stopTime 300
> set ns [new Simulator]
>
> # These are defaults if values not set on command line
>
> set num_ftps 1
> set web_rate 0
> set revftp 0
> set num_cbrs 0
> #rate and packetSize set in build_cbr
> set bottleneck 3Mb
> #for a 10MB ftp
> set filesize 10000000
> set dynamic_bw 0
> set greedy 0
>
> # Parse command line
>
> if {$argc >= 1} {
>     set num_ftps [lindex $argv 0]
>     if {$argc >= 2} {
>         set web_rate [lindex $argv 1]
>         if {$argc >= 3} {
>             set num_cbrs [lindex $argv 2]
>             if {$argc >= 4} {
>             set bottleneck [lindex $argv 3]
>      if {$argc >= 5} {
> set filesize [lindex $argv 4]
>     if {$argc >= 6} {
> set dynamic_bw [lindex $argv 5]
>     if {$argc >= 7} {
> set revftp [lindex $argv 6]
>      }
>      }
>         }
>          }
> }
>     }
> }
>
> set bw [bw_parse $bottleneck]
> if { $revftp >= 1} {
> set num_revs $revftp
> } else {
> set num_revs 0
> }
> puts "ftps $num_ftps webrate $web_rate cbrs $num_cbrs bw $bw filesize
> $filesize reverse $num_revs"
>
> # experiment settings
> set psize 1500
> if { $bw < 1000000} { set psize 500 }
> set nominal_rtt [delay_parse 100ms]
> set accessdly 20
> set bdelay 10
> set realrtt [expr 2*(2*$accessdly + $bdelay)]
> puts "accessdly $accessdly bneckdly $bdelay realrtt $realrtt bneckbw $bw"
>
> # CoDel values
> # interval to keep min over
> set interval [delay_parse 100ms]
> # target in ms.
> set target [delay_parse 5ms]
>
> global defaultRNG
> $defaultRNG seed 0
> ns-random 0
> #$defaultRNG seed 54321
> #ns-random 23145
>
> # ------- config info is all above this line ----------
>
> #bdp in packets, based on the nominal rtt
> set bdp [expr round($bw*$nominal_rtt/(8*$psize))]
>
> Trace set show_tcphdr_ 1
> set startTime 0.0
>
> #TCP parameters - have to set both for FTPs and PackMime
>
> Agent/TCP set window_ [expr $bdp*16]
> Agent/TCP set segsize_ [expr $psize-40]
> Agent/TCP set packetSize_ [expr $psize-40]
> Agent/TCP set windowInit_ 4
> Agent/TCP set segsperack_ 1
> Agent/TCP set timestamps_ true
> set delack 0.4
> Agent/TCP set interval_ $delack
>
> Agent/TCP/FullTcp set window_ [expr $bdp*16]
> Agent/TCP/FullTcp set segsize_ [expr $psize-40]
> Agent/TCP/FullTcp set packetSize_ [expr $psize-40]
> Agent/TCP/FullTcp set windowInit_ 4
> Agent/TCP/FullTcp set segsperack_ 1
> Agent/TCP/FullTcp set timestamps_ true
> Agent/TCP/FullTcp set interval_ $delack
>
>
> Agent/TCP/Linux instproc done {} {
> global ns filesize
> #this doesn't seem to work, had to hack tcp-linux.cc to do repeat ftps
> $self set closed_ 0
> #needs to be delayed by at least .3sec to slow start
> puts "[$ns now] TCP/Linux proc done called"
> $ns at [expr [$ns now] + 0.3] "$self send $filesize"
> }
>
> # problem is that idle() in tcp.cc never seems to get called...
> Application/FTP instproc resume {} {
> puts "called resume"
>         global filesize
>         $self send $filesize
> # $ns at [expr [$ns now] + 0.5] "[$self agent] reset"
> $ns at [expr [$ns now] + 0.5] "[$self agent] send $filesize"
> }
>
> Application/FTP instproc fire {} {
>         global filesize
>         $self instvar maxpkts_
>         set maxpkts_ $filesize
> [$self agent] set maxpkts_ $filesize
>         $self send $maxpkts_
> puts "fire() FTP"
> }
>
> #buffersizes
> set buffersize [expr $bdp]
> set buffersize1 [expr $bdp*10]
>
> Queue/CoDel set target_ $target
> Queue/CoDel set interval_ $interval
>
> #set Flow_id 1
>
> proc build_topology { ns } {
>     # nodes n0 and n1 are the server and client side gateways and
>     # the link between them is the congested slow link. n0 -> n1
>     # handles all the server to client traffic.
>     #
>     # if the web_rate is non-zero, node n2 will be the packmime server
> cloud
>     # and node n3 will be the client cloud.
>     #
>     # num_ftps server nodes and client nodes are created for the ftp
> sessions.
>     # the first client node is n{2+w} and the first server node is n{2+f+w}
>     # where 'f' is num_ftps and 'w' is 1 if web_rate>0 and 0 otherwise.
>     # servers will be even numbered nodes, clients odd
>     # Warning: the numbering here is ridiculously complicated
>
>     global bw bdelay accessdly buffersize buffersize1 filesize node_cnt
>     set node_cnt 2
>
>     # congested link
>     global n0 n1
>     set n0 [$ns node]
>     set n1 [$ns node]
>     $ns duplex-link $n0 $n1 $bw ${bdelay}ms CoDel
>     $ns duplex-link-op $n0 $n1 orient right
>     $ns duplex-link-op $n0 $n1 queuePos 0.5
>     $ns duplex-link-op $n1 $n0 queuePos 1.5
>     $ns queue-limit $n0 $n1 $buffersize
>     $ns queue-limit $n1 $n0 $buffersize
>     set node_cnt 2
>
>     #dynamic bandwidth
>     # these are the multipliers for changing bw, times initial set bw
>     # edit these values to get different patterns
>     global stopTime dynamic_bw
>     array names bw_changes
>     set bw_changes(1) 0.1
>     set bw_changes(2) 0.01
>     set bw_changes(3) 0.5
>     set bw_changes(4) 0.01
>     set bw_changes(5) 1.0
>
>     puts "bottleneck starts at [[[$ns link $n0 $n1] link] set
> bandwidth_]bps"
>     for {set k 1} {$k <= $dynamic_bw} {incr k 1} {
> set changeTime [expr $k*$stopTime/($dynamic_bw+1)]
> set f $bw_changes($k)
> set newBW [expr $f*$bw]
> puts "change at $changeTime to [expr $newBW/1000000.]Mbps"
> $ns at $changeTime "[[$ns link $n0 $n1] link] set bandwidth_ $newBW"
> $ns at $changeTime "[[$ns link $n1 $n0] link] set bandwidth_ $newBW"
> $ns at $changeTime "puts $newBW"
>     }
>
>     set li_10 [[$ns link $n1 $n0] queue]
>     set li_01 [[$ns link $n0 $n1] queue]
>
>     set tchan_ [open /tmp/redqvar.tr w]
>     $li_01 trace curq_
>     $li_01 trace d_exp_
>     $li_01 attach $tchan_
>
>     global num_ftps web_rate num_cbrs greedy num_revs
>     set linkbw [expr $bw*10]
>
>     set w [expr $web_rate > 0]
>     if {$w} {
>         global n2 n3
> #server
>         set n2 [$ns node]
>         $ns duplex-link $n2 $n0 $linkbw ${accessdly}ms DropTail
>         $ns queue-limit $n2 $n0 $buffersize1
>         $ns queue-limit $n0 $n2 $buffersize1
>
> #client
>         set n3 [$ns node]
>         $ns duplex-link $n1 $n3 $linkbw ${accessdly}ms DropTail
>         $ns queue-limit $n1 $n3 $buffersize1
>         $ns queue-limit $n3 $n1 $buffersize1
> set node_cnt 4
>     }
> #need to fix the angles if use nam
>     for {set k 0} {$k < $num_ftps} {incr k 1} {
>         # servers
>         set j $node_cnt
>         global n$j
>         set n$j [$ns node]
> if {$greedy > 0 && $k == 0} {
>          $ns duplex-link [set n$j] $n0 $linkbw 1ms DropTail
> } else {
>          $ns duplex-link [set n$j] $n0 $linkbw ${accessdly}ms DropTail
> }
>         $ns queue-limit [set n$j] $n0 $buffersize1
>         $ns queue-limit $n0 [set n$j] $buffersize1
>         set angle [expr $num_ftps>1? 0.75+($k-1)*.5/($num_ftps-1) : 1]
>         $ns duplex-link-op $n0 [set n$j] orient $angle
> incr node_cnt
>
>         # clients
>         set j $node_cnt
>         global n$j
>         set n$j [$ns node]
>         set dly [expr ${accessdly} +($k+1)]
>         $ns duplex-link $n1 [set n$j] $linkbw  ${dly}ms  DropTail
>         $ns queue-limit $n1 [set n$j] $buffersize1
>         $ns queue-limit [set n$j] $n1 $buffersize1
>         set angle [expr $num_ftps>1? fmod(2.25-($k-1)*.5/($num_ftps-1), 2)
> : 0]
>         $ns duplex-link-op $n1 [set n$j] orient $angle
> incr node_cnt
>     }
>     for {set k 0} {$k < $num_cbrs} {incr k 1} {
>         # servers
>         set j $node_cnt
>         global n$j
>         set n$j [$ns node]
>         $ns duplex-link [set n$j] $n0 $linkbw ${accessdly}ms DropTail
>         $ns queue-limit [set n$j] $n0 $buffersize1
>         $ns queue-limit $n0 [set n$j] $buffersize1
> #        set angle [expr $num_cbrs>1? 0.75+($k-1)*.5/($num_cbrs-1) : 1]
>         $ns duplex-link-op $n0 [set n$j] orient $angle
> incr node_cnt
>
>         # clients
>         set j $node_cnt
>         global n$j
>         set n$j [$ns node]
>         $ns duplex-link $n1 [set n$j] $linkbw  ${accessdly}ms  DropTail
>         $ns queue-limit $n1 [set n$j] $buffersize1
>         $ns queue-limit [set n$j] $n1 $buffersize1
> #        set angle [expr $num_cbrs>1? fmod(2.25-($k-1)*.5/($num_ftps-1), 2)
> : 0]
>         $ns duplex-link-op $n1 [set n$j] orient $angle
> incr node_cnt
>     }
> #reverse direction ftps
>     for {set k 0} {$k < $num_revs} {incr k 1} {
>         # clients
>         set j $node_cnt
>         global n$j
>         set n$j [$ns node]
>         $ns duplex-link [set n$j] $n0 $linkbw ${accessdly}ms DropTail
>         $ns queue-limit [set n$j] $n0 $buffersize1
>         $ns queue-limit $n0 [set n$j] $buffersize1
>         set angle [expr $num_ftps>1? 0.75+($k-1)*.5/($num_ftps-1) : 1]
>         $ns duplex-link-op $n0 [set n$j] orient $angle
> incr node_cnt
>
>         # servers
>         set j $node_cnt
>         global n$j
>         set n$j [$ns node]
>         set dly [expr ($accessdly)*1.1 +($k+1)]
>         $ns duplex-link $n1 [set n$j] $linkbw  ${dly}ms  DropTail
>         $ns queue-limit $n1 [set n$j] $buffersize1
>         $ns queue-limit [set n$j] $n1 $buffersize1
>         set angle [expr $num_ftps>1? fmod(2.25-($k-1)*.5/($num_ftps-1), 2)
> : 0]
>         $ns duplex-link-op $n1 [set n$j] orient $angle
> incr node_cnt
>     }
> }
>
> proc build_cbr {cnd snd startTime timeToStop Flow_id} {
>     global ns
>     set udp [$ns create-connection UDP $snd LossMonitor $cnd $Flow_id]
>     set cbr [new Application/Traffic/CBR]
>     $cbr attach-agent $udp
>     # change these for different types of CBRs
>     $cbr set packetSize_ 100
>     $cbr set rate_ 0.064Mb
>     $ns at $startTime "$cbr start"
>     $ns at $timeToStop "$cbr stop"
> }
>
> # cnd is client node, snd is server node
> proc build_ftpclient {cnd snd startTime timeToStop Flow_id} {
>
>     global ns filesize greedy revftp
>     set ctcp [$ns create-connection TCP/Linux $snd TCPSink/Sack1 $cnd
> $Flow_id]
>     $ctcp select_ca cubic
>     set ftp [$ctcp attach-app FTP]
>     $ftp set enableResume_ true
>     $ftp set type_ FTP
>
> #set up a single infinite ftp with smallest RTT
>     if {$greedy > 0 || $filesize < 0} {
>      $ns at $startTime "$ftp start"
>      set greedy 0
>     } else {
>      $ns at $startTime "$ftp send $filesize"
>     }
>     $ns at $timeToStop "$ftp stop"
> }
>
> proc build_webs {cnd snd rate startTime timeToStop} {
>     set CLIENT 0
>     set SERVER 1
>
>     # SETUP PACKMIME
>     set pm [new PackMimeHTTP]
>     $pm set-TCP Sack
>     $pm set-client $cnd
>     $pm set-server $snd
>     $pm set-rate $rate;                    # new connections per second
>     $pm set-http-1.1;                      # use HTTP/1.1
>
>     # create RandomVariables
>     set flow_arrive [new RandomVariable/PackMimeHTTPFlowArrive $rate]
>     set req_size [new RandomVariable/PackMimeHTTPFileSize $rate $CLIENT]
>     set rsp_size [new RandomVariable/PackMimeHTTPFileSize $rate $SERVER]
>
>     # assign RNGs to RandomVariables
>     $flow_arrive use-rng [new RNG]
>     $req_size use-rng [new RNG]
>     $rsp_size use-rng [new RNG]
>
>     # set PackMime variables
>     $pm set-flow_arrive $flow_arrive
>     $pm set-req_size $req_size
>     $pm set-rsp_size $rsp_size
>
>     global ns
>     $ns at $startTime "$pm start"
>     $ns at $timeToStop "$pm stop"
> }
>
> proc uniform {a b} {
> expr $a + (($b- $a) * ([ns-random]*1.0/0x7fffffff))
> }
>
> proc finish {} {
>         global ns
> $ns halt
>         $ns flush-trace
>         exit 0
> }
>
> # $ns namtrace-all [open out.nam w]
> # $ns color 2 blue
> # $ns color 3 red
> # $ns color 4 yellow
> # $ns color 5 green
>
> build_topology $ns
>
> #$ns trace-queue $n0 $n1 [open out_n0ton1.tr w]
> #set fname f${num_ftps}w${web_rate}b${bottleneck}.tr
> set fname f.tr
> puts $fname
> $ns trace-queue $n0 $n1 [open /tmp/$fname w]
> #reverse direction
> #$ns trace-queue $n1 $n0 [open /tmp/$fname w]
>
> set node_cnt 2
> if {$web_rate > 0} {
>         build_webs $n3 $n2 $web_rate 0 $stopTime
> set node_cnt 4
> }
>
> for {set k 1} {$k <= $num_ftps} {incr k 1} {
>     set j $node_cnt
>     incr node_cnt
>     set i $node_cnt
>     build_ftpclient [set n$i] [set n$j]  \
>   $startTime $stopTime $i
> # [expr 1.0*($k-1)] $stopTime $i
> # [expr $startTime+($k-1)*[uniform 0.0 2.0]] $stopTime $i
>     incr node_cnt
> }
>
> for {set k 1} {$k <= $num_cbrs} {incr k 1} {
>     set j $node_cnt
>     incr node_cnt
>     set i $node_cnt
>     build_cbr [set n$i] [set n$j]  \
>   [expr $startTime+($k-1)*[uniform 0.0 2.0]] $stopTime $i
>     incr node_cnt
> }
>
> #for reverse direction, give client smaller number
> for {set k 1} {$k <= $num_revs} {incr k 1} {
>     set j $node_cnt
>     incr node_cnt
>     set i $node_cnt
>     build_ftpclient [set n$j] [set n$i] $startTime $stopTime $j
>     incr node_cnt
> }
>
> $ns at [expr $stopTime ] "finish"
> $ns run
> exit 0
> ###################################################################
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