[ns] example programs
hi i need example programs for wireless simulations using Tclwith odmrp protocol,,,else atleast any other protocol.. with regards, sangeetha.k
Re: [ns] mcps_data_request and losses
Hello, Thanks for your proposition. I'm not near the computer I use for work but I'll explain. In my Tcl script, I call mcpsDataRequest to send frames. In the command function of SSCS, I defined the mapping and made the call to MCPS_DATA_request which in turn calls mcps_data_request. The issue I was facing was that with 3 nodes, I had 99% packets successfully sent which was just impossible. I checked the call to MCPS_DATA_request and noticed that I had set the handle to 0. Since the handle was used later on to direct to MCPS_DATA_confirm, I never got to that point as soon as there was one lost frame. So the first two nodes to fail in sending a frame will never recover from it and the last one will continue sending, leading to a near zero loss ratio. I don't really know awk. I use databases to process my files. BR RD 2009/7/6 hakim anouar hakim.ano...@gmail.com *Hi, Related to your pb,i'm also working on zigbee technologie (802.15.4), and with pleasure to collaborate with you on this topic. if you can send me your script file and also the script used to calculate the ratio of packets losed and received in order to analyse it and giving if possible my helps.Me i use a simple CBR traffic, i can calculate those statistics by using a awk script. * -- ANOUAR Abdelhakim Systèmes Informatiques et Réseaux Département de Génie Informatiques -- Life is too short to be pissed off all the time.
[ns] NODE 1 NOT DEFINED ERROR MESSAGE
I tried simulating a simple wireless scenario of two mobile nodes moving
towards each other and after a while moves away . the simulation builds and
runs well,but i cant see the two nodes in the NAM animation though the TR file
shows the simulation generated correct results..below is the scripts.please
help
# =
# Define options
# =
set val(chan) Channel/WirelessChannel ;# channel type
set val(prop) Propagation/TwoRayGround ;# radio-propagation model
set val(ant) Antenna/OmniAntenna ;# Antenna type
set val(ll) LL ;# Link layer type
set val(ifq) Queue/DropTail/PriQueue ;# Interface queue type
set val(ifqlen) 50 ;# max packet in ifq
set val(netif) Phy/WirelessPhy ;# network interface type
set val(mac) Mac/802_11 ;# MAC type
set val(rp) DSDV ;# ad-hoc routing protocol
set val(x) 500 ;# x-axis of grid
set val(y) 500 ;# y-axis of grid
set val(nn) 2 ;# number of mobilenodes
set ns_ [new Simulator]
set tracefd [open simple.tr w]
$ns_ trace-all $tracefd
set nf [open simple.nam w]
$ns_ namtrace-all-wireless $nf $val(x) $val(y)
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
create-god $val(nn)
#(parameter examples)
# $ns_ node-config -addressingType flat or hierarchical or expanded
# -adhocRouting DSDV or DSR or TORA
# -llType LL
# -macType Mac/802_11
# -propType Propagation/TwoRayGround
# -ifqType Queue/DropTail/PriQueue
# -ifqLen 50
# -phyType Phy/WirelessPhy
# -antType Antenna/OmniAntenna
# -channelType Channel/WirelessChannel
# -topoInstance $topo
# -energyModel EnergyModel
# -initialEnergy (in Joules)
# -rxPower (in W)
# -txPower (in W)
# -agentTrace ON or OFF
# -routerTrace ON or OFF
# -macTrace ON or OFF
# -movementTrace ON or OFF
# Configure nodes
$ns_ node-config -adhocRouting $val(rp) \
-llType $val(ll) \
-macType $val(mac) \
-ifqType $val(ifq) \
-ifqLen $val(ifqlen) \
-antType $val(ant) \
-propType $val(prop) \
-phyType $val(netif) \
-topoInstance $topo \
-channelType $val(chan) \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF \
-movementTrace OFF
for {set i 0} {$i $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Provide initial (X,Y, for now Z=0) co-ordinates for node_(0) and node_(1)
#
$node_(0) set X_ 5.0
$node_(0) set Y_ 2.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 390.0
$node_(1) set Y_ 385.0
$node_(1) set Z_ 0.0
#
# Node_(1) starts to move towards node_(0)
#
$ns_ at 50.0 $node_(1) setdest 25.0 20.0 15.0
$ns_ at 10.0 $node_(0) setdest 20.0 18.0 1.0
# Node_(1) then starts to move away from node_(0)
$ns_ at 100.0 $node_(1) setdest 490.0 480.0 15.0
# TCP connections between node_(0) and node_(1)
set tcp [new Agent/TCP]
$tcp set class_ 2
set sink [new Agent/TCPSink]
$ns_ attach-agent $node_(0) $tcp
$ns_ attach-agent $node_(1) $sink
$ns_ connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns_ at 10.0 $ftp start
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i $val(nn) } {incr i} {
$ns_ at 150.0 $node_($i) reset;
}
$ns_ at 150.0001 stop
$ns_ at 150.0002 puts \NS EXITING...\ ; $ns_ halt
proc stop {} {
global ns_ tracefd
close $tracefd
}
puts Starting Simulation...
$ns_ run
[ns] Calculate the power consumption
Hi to everyone, I would like to know whether the ns2 can calculate the power consumption or not and if yes, could someone please tell me how? Kind regards, Venetis _ Έχετε Messenger; Έχετε και Windows Live. Μάθετε περισσότερα. http://microsoft.com/windows/windowslive
[ns] Change the value of dataRate_ in Mac/802_11
hi all, i want to change via tcl the value of rate in Mac/802_11 ... For exemple when i set : Mac/802_11 set dataRate_ 1Mb the dataRate is really 1 Mb but after if i want to change the datarate to 2Mb Mac/802_11 set dataRate_ 2Mb the value of dataRate_ is still 1Mb What's wrong with this ? thanx
[ns] error report
Hi to everyone, I found an example on the internet and I tried to run it but I am getting a feedback to change some variables but I don't know which one I have to change. At the attached files are the example file and the report error. Please give me help on this problem. Kind regards, Venetis _ Έχετε Messenger; Έχετε και Windows Live. Μάθετε περισσότερα. http://microsoft.com/windows/windowslive
Re: [ns] Change the value of dataRate_ in Mac/802_11
Are you setting it *before* creating the nodes? If dataRate_ is not set when the nodes are created, they use bandwidth_ (defaults to 1Mb) instead. - David Ross. El hadi Cherkaoui wrote: hi all, i want to change via tcl the value of rate in Mac/802_11 ... For exemple when i set : Mac/802_11 set dataRate_ 1Mb the dataRate is really 1 Mb but after if i want to change the datarate to 2Mb Mac/802_11 set dataRate_ 2Mb the value of dataRate_ is still 1Mb What's wrong with this ? thanx
