[ns] why does the code below doesn't work as expected

[Pedro Vale Estrela]

use
      $udapp set rate_ 1Mb


pedro Estrela

> -----Original Message-----
> From: ns-users-bounces at ISI.EDU [mailto:ns-users-bounces at ISI.EDU] On Behalf
> Of Sandeep
> Sent: quarta-feira, 30 de Agosto de 2006 7:47
> To: ns-users at ISI.EDU
> Subject: [ns] why does the code below doesn't work as expected
> 
> 
> Hi
>   In the below code whatever Mac/802_11 parameters I set are not taking
> effect. For instance eventhough I set _dataRate  11mbps, throughput is
> coming around 400kbps, which is the default rate for udp. If I change
> _dataRate, basicRate_ or PLCPDataRate_ , there is absolutely no effect.
> Please if anyone can help, because I require them in my work.
> Thanks in advance,
> regards,
> Sandeep.
>       1 set val(chan)      Channel/WirelessChannel    ;# channel type
>       2 set val(prop)      Propagation/TwoRayGround   ;#
> radio-propagation model
>       3 set val(netif)     Phy/WirelessPhy            ;# network
> interface type
>       4 set val(mac)       Mac/802_11                 ;# MAC type
>       5 set val(ifq)       Queue/DropTail/PriQueue    ;# interface queue
> type
>       6 set val(ll)        LL                         ;# link layer type
>       7 set val(ant)       Antenna/OmniAntenna        ;# antenna model
>       8 set val(ifqlen)    50                         ;# max packet in ifq
>       9 set val(nn)        2                          ;# number of
> mobilenodes
>      10 set val(rp)        DSDV                       ;# routing protocol
>      11 set val(x)         800
>      12 set val(y)         800
>      13
>      14 Phy/WirelessPhy set bandwidth_ 11Mb
>      15
>      16 Mac/802_11 set SlotTime_          0.000020        ;# 20us
>      17 Mac/802_11 set SIFS_              0.000010        ;# 10us
>      18 Mac/802_11 set PreambleLength_    144             ;# 144 bit
>      19 Mac/802_11 set PLCPHeaderLength_  48              ;# 48 bits
>      20 Mac/802_11 set PLCPDataRate_      1.0           ;# 1Mbps
>      21 Mac/802_11 set dataRate_          11.0          ;# 11Mbps
>      22 Mac/802_11 set basicRate_         1.0           ;# 1Mbps
>      23
>      24 set ns [new Simulator]
>      25 set tr [open trace.tr w]
>      26 $ns trace-all $tr
>      27 set na [open trace.nam w]
>      28 $ns namtrace-all-wireless $na $val(x) $val(y)
>      29 set chan1 [new $val(chan)]
>      30 set topo [new Topography]
>      31 $topo load_flatgrid 500 500
>      32 create-god 2
>      33
>      34 proc finish {} {
>      35    global ns tr na
>      36    $ns flush-trace
>      37    $ns nam-end-wireless [$ns now]
>      38    close $tr
>      39    close $na
>      40    exec nam trace.nam &
>      41    exit 0;
>      42 }
>      43
>      44 $ns node-config   -adhocRouting $val(rp)\
>      45                          -llType $val(ll) \
>      46                          -macType $val(mac) \
>      47                          -antType $val(ant) \
>      48                          -propType $val(prop) \
>      49                          -phyType $val(netif) \
>      50                          -channel $chan1 \
>      51                          -topoInstance $topo \
>      52                          -agentTrace ON \
>      53                          -routerTrace ON \
>      54                          -macTrace ON \
>      55                          -movementTrace OFF\
>      56                          -ifqType $val(ifq) \
>      57                          -ifqLen $val(ifqlen)
>      58
>      59 for {set i 0} {$i < 2} {incr i} {
>      60         set node_($i) [$ns node]
>      61         $node_($i) random-motion 0
>      62 }
>      63
>      64 $node_(0) set X_ 0
>      65 $node_(0) set Y_ 0
>      66 $node_(0) set Z_ 0
>      67 $node_(1) set X_ 10
>      68 $node_(1) set Y_ 0
>      69 $node_(1) set Z_ 0
>      70
>      71 $node_(0) color green
>      72 $node_(1) color green
>      73
>      74 set udp [new Agent/UDP]
>      75 set des [new Agent/Null]
>      76 $ns attach-agent $node_(0) $udp
>      77 $ns attach-agent $node_(1) $des
>      78 $ns connect $udp $des
>      79
>      80 set udapp [new Application/Traffic/CBR]
>      81 $udapp attach-agent $udp
>      82 $udapp set fid_ 1
>      83 $udapp set packetSize_ 400
>      84
>      85 $ns at 1.0 "$udapp start"
>      86 $ns at 30.0 "$udapp stop"
>      87 $ns at 30.0 "$ns halt"
>      88 ns at 30.0 "finish
>      89 $ns run"