[ns] tcl code
hi all, can u tell me what this line do ? # creation of the MutiFaceNodes $ns node-config -multiIf ON ;#to create MultiFaceNode set multiFaceNode [$ns node 4.0.0] $ns node-config -multiIf OFF $multiFaceNode add-interface-node $iface1 set tcp_(0) [new Agent/TCP/FullTcp] $multiFaceNode attach-agent $tcp_(0) $iface1 ;# the interface is used for sending set app_(0) [new Application/TcpApp $tcp_(0)] puts App0 id=$app_(0) i don't understand the line : $multiFaceNode attach-agent $tcp_(0) $iface1 usually we use $ns attach-agent $tcp(0) $interface No?? best regards .
[ns] ns2 computing the link quality ?
hi all, i want to know how to calculate the link quality of a network (wifi , umts and wimax). my idea is to get the radio link quality of available network and compere between them to get the best access. thanx for help and if there is a tcl code of this it could help me more.
Re: [ns] sample code for wsn
Hi,
You should inspect the source file and clean it up for line breaks where it
should not be. It is easy, jusr 2-3 places. Split into separate wsn1.scn
file where that information is given. When done, the code works perfectly.
- Arne
- Original Message -
From: Habeshawit2God bez2...@hotmail.co.uk
To: ns-users@ISI.EDU
Sent: Tuesday, March 17, 2009 6:27 PM
Subject: Re: [ns] sample code for wsn
Dear naveen prabu,
As per your advise i tried it however it doesn't work and here is the
error
message it came up with i went to the line it is referring to and realize
that there is actually something wrong with it. Here is the error
message:
siu06...@sie59a:~/Documents$ ns wsn1.tcl
bad option file: must be add, info, remove, variable, vdelete, or vinfo
while executing
trace file for wpan (special handling needed)
(file wsn1.tcl line 47)
Dear nabeen, hoping to hear from you soon, i would like to thank you very
much in advance.
Best regards,
Habeshawit2God
P.S please do not hesitate to drop me an e-mail using my personal e-mail
and
I would also appreciate it if you can give me reply between today and
tomorrow as i have to hand in my project on Thursday 19thMarch 2009!!
naveen prabu wrote:
I have pasted sample tcl file and scenario file here...
save scn file as wsn1.scn and tcl file as (say)wsn1.tcl and run tcl
file...
try runnin thisif any bugs then let me know...
wsn1.tcl
# ==
# Define options
# ==
set val(chan) Channel/WirelessChannel;# Channel Type
set val(prop) Propagation/TwoRayGround ;# radio-propagation
model
set val(netif) Phy/WirelessPhy/802_15_4
set val(mac)Mac/802_15_4
set val(ifq)Queue/DropTail/PriQueue;# interface queue
type
set val(ll) LL ;# link layer type
set val(ant)Antenna/OmniAntenna;# antenna model
set val(ifqlen) 50 ;# max packet in ifq
set val(nn) 25 ;# number of
mobilenodes
set val(rp) AODV ;# routing protocol
set val(x) 50
set val(y) 50
set val(nam) wsn1.nam
set val(traffic) ftp;# cbr/poisson/ftp
#read command line arguments
proc getCmdArgu {argc argv} {
global val
for {set i 0} {$i $argc} {incr i} {
set arg [lindex $argv $i]
if {[string range $arg 0 0] != -} continue
set name [string range $arg 1 end]
set val($name) [lindex $argv [expr $i+1]]
}
}
getCmdArgu $argc $argv
set appTime10.0 ;# in seconds
set appTime20.3 ;# in seconds
set appTime30.7 ;# in seconds
set stopTime100 ;# in seconds
# Initialize Global Variables
set ns_ [new Simulator]
set tracefd [open ./wsn1.tr w]
$ns_ trace-all $tracefd
if { $val(nam) == wsn1.nam } {
set namtrace [open ./$val(nam) w]
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
}
$ns_ puts-nam-traceall {# nam4wpan #} ;# inform nam that this is a
trace file for wpan (special handling needed)
Mac/802_15_4 wpanNam namStatus on ;# default = off (should be turned
on before other 'wpanNam' commands can work)
#Mac/802_15_4 wpanNam ColFlashClr gold ;# default = gold
#Mac/802_15_4 wpanNam NodeFailClr grey ;# default = grey
# For model 'TwoRayGround'
set dist(5m) 7.69113e-06
set dist(9m) 2.37381e-06
set dist(10m) 1.92278e-06
set dist(11m) 1.58908e-06
set dist(12m) 1.33527e-06
set dist(13m) 1.13774e-06
set dist(14m) 9.81011e-07
set dist(15m) 8.54570e-07
set dist(16m) 7.51087e-07
set dist(20m) 4.80696e-07
set dist(25m) 3.07645e-07
set dist(30m) 2.13643e-07
set dist(35m) 1.56962e-07
set dist(40m) 1.20174e-07
Phy/WirelessPhy set CSThresh_ $dist(15m)
Phy/WirelessPhy set RXThresh_ $dist(15m)
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
# Create God
set god_ [create-god $val(nn)]
set chan_1_ [new $val(chan)]
# configure node
$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 \
-agentTrace OFF \
-routerTrace OFF \
-macTrace ON \
-movementTrace OFF \
#-energyModel EnergyModel \
#-initialEnergy 1 \
#-rxPower 0.3 \
#-txPower 0.3 \
-channel $chan_1_
for {set i 0} {$i $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
source ./wsn1.scn
# Setup traffic flow between nodes
proc cbrtraffic { src dst interval starttime } {
global ns_ node_
Re: [ns] Can NS-2 be used to transmit real video sequences? (galaxy-huang)
google Evalvid there is a link in the website about video and ns2! 3. Can NS-2 be used to transmit real video sequences? (galaxy-huang) Message: 3 Date: Mon, 4 May 2009 10:25:44 +0800 (CST) From: galaxy-huang galaxy-hu...@163.com Subject: [ns] Can NS-2 be used to transmit real video sequences? To: ns-users ns-users@ISI.EDU Message-ID: 25628181.351191241403944698.javamail.corem...@bj163app121.163.com Content-Type: text/plain; charset=gbk hi everyone Recently,i am reading one book about streaming over the wireless network,today i come across such a sentence:as well as using real video sequences and transmitting them using an NS-2 simulator-based implementation of the 802.11a/b/g MAC standard. My question is:can NS-2 be used to transmit real video sequences and ,if can, how to achieve this purpose?Could someone tells me about this and recommends me some book or website to refer to? Thanks in advance! Guisong Huang
[ns] pros and cons of cygwin and NS2
Hello friends, Please tell me what is the different between performing network simulations in NS2 in Linux environment and on cygwin in windows systems. Please explain pros and cons of each. Regards
[ns] How to allow the number of TCP users to vary with time?
Hello, I wonder if I can vary the number of active TCP users with time, during simulation. To be exact, I want to vary the number of active TCP users from 30 to 200 and back to 30 again, with one user becoming active or inactive every two seconds. ___ Χρησιμοποιείτε Yahoo!; Βαρεθήκατε τα ενοχλητικά μηνύματα (spam); Το Yahoo! Mail διαθέτει την καλύτερη δυνατή προστασία κατά των ενοχλητικών μηνυμάτων http://login.yahoo.com/config/mail?.intl=gr
[ns] Please help mo for SMCC on NS
hi to all!
I am a newer about NS. my interesting is multicast congestion control. I have
some problems when I run SMCC[Gu-In Kwon and John W. Byers. Smooth Multirate
Multicast Congestion Control.IEEE INFOCOM 2003]
I have downloaded SMCC source codes from the writer's websit:
http://cs-people.bu.edu/guin/smcc.html. When I run the simulations, there are
several problems, maybe the reason is the version I used is 3.2 which is
differented from the writer's. Could somebody give me some advice that how to
modify the codes in order to run simulations successfully in NS 3.2?
The Problems is as follows:
1、If I replace TCP-sink.h and TCP-sink.cc with the website provioded, the
error log in make procedure is :
tcp/tcp-asym-sink.o:tcp-asym-sink.cc:(.text+0x30d): undefined reference to
`Acker::update_ts(int, double, int)'
tcp/tcp-asym-sink.o:tcp-asym-sink.cc:(.rdata$_ZTV11TcpAsymSink[vtable for
TcpAsymSink]+0x34): undefined reference to `DelAckSink::reset()'
collect2: ld returned 1 exit status
make: *** [ns] Error 1
So I retain the inherent codes in NS 3.2 instead of raplacing them.
2、I put smcc.h and smcc.cc in the directory
\ns-allinone-2.31\ns-2.31\mcast
When make it , there are some error information as follows:
mcast/smcc.cc: In member function `void SmccAgent::warmup()':
mcast/smcc.cc:123: error: ISO C++ forbids initialization in array new
mcast/smcc.cc:124: error: ISO C++ forbids initialization in array new
mcast/smcc.cc:125: error: ISO C++ forbids initialization in array new
So I modified the codes ：
123 send_timer_ = new SmccSendTimer[Max_smcc_Layer](this);
124NoFeedbacktimer_ = new SmccNoFeedbackTimer[Max_smcc_Layer](this);
125bcl_timer_ = new BclTimer[Max_Bcl_Layer](this);
to:
SmccSendTimer *send_timer_[Max_smcc_Layer];
SmccNoFeedbackTimer *NoFeedbacktimer_[Max_smcc_Layer];
for(int kk=0; kkMax_smcc_Layer; kk++)
{
send_timer_[kk]= new SmccSendTimer(this);
NoFeedbacktimer_[kk]= new SmccNoFeedbackTimer(this);
}
BclTimer *bcl_timer_[Max_Bcl_Layer];
for(int kk=0; kkMax_Bcl_Layer; kk++)
{
bcl_timer_[kk]= new BclTimer(this);
}
Then make successfully.
3、I have also modified makefile.in to include the needed .cc and .h files:
OBJ_CC = \
...
tcp/tfrc.o tcp/tfrc-sink.o mcast/tfmcc.o mcast/tfmcc-sink.o mcast/smcc.o
tcp/formula.o \
...
4、
When I run smcc.tcl for figure 4 and 5, there is one error log:
$ ns smcc.tcl
(_o3 cmd line 1)
invoked from within
_o3 cmd queue-parameter _o17 _o24 2 6
invoked from within
catch $self cmd $args ret
invoked from within
if [catch $self cmd $args ret] {
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error error when calling class $cls: $args $...
(procedure _o3 line 2)
(SplitObject unknown line 2)
invoked from within
$ns queue-parameter $n3 $n4 2 6
(file smcc.tcl line 94)
My question is : what's the function of $ns queue-parameter $n3 $n4 2 6?
5、
Then I commented out these two lines:
...
#$ns queue-parameter $n3 $n4 2 6
...
#$ns queue-parameter $n3 $n5 2 21
...
Finally, when run it again, it turn another error:
$ ns smcc.tcl
Scheduler: Event UID not valid!
I can't find where the problems, could somebody help me to solve these problems
and run the simulations successfully?
So appreciated and best regards!
