[ns] ns units
Hello, I was wondering, when I set two nodes a distance apart of 30, is it 30m or feet or km...? Also in wireless simulation, the transmission range of the antenna is km or m...? Does anyone know where this is discussed? Or is it all relative? :) Kathy
[ns] Regarding solution of problem in simple programe.
Hi all,
When I run the sample program about C++/Otcl linkage I got the error as
described below:
Program:
class MyAgent : public Agent
{
public:
MyAgent();
protected:
int command(int *argc,const char *const* argv);
private:
int My_var1;
double My_var2;
void MyPrivFun(void);
};
static class MyAgentClass: public TclClass
{
public:
MyAgentClass() : TclClass(Agent/MyAgentOtcl){};
TclObject* create(int, const char*const*)
{
return (new MyAgent());
}
}class_my_agent;
MyAgent : MyAgent() : Agent(PT_UDP)
{
bind(my_var1_otcl, my_var1);
bind(my_var2_otcl, my_var2);
}
int MyAgent::command(int *argc,const char *const* argv)
{
if(argc==2)
{
if(strcmp(argv[1], call_my_priv_func)==0)
{
MyPrivFun();
return(TCL_OK);
}
}
return(Agent : command(argc,argv));
}
void MyAgent :: MyPrivFun(void)
{
Tcl tcl=Tcl::instance();
Tcl.eval(puts \Message from MyPrivFun\);
Tcl.evalf(puts \ my_var1= %d\, my_var1);
Tcl.evalf(puts \ my_var2= %f\, my_var2);
}
ex-linkage.cc
set myagent [new Agent/MyAgentOtcl]
$myagent set my_var1_otcl 2
$myagent set my_var2_otcl 3.14
$myagent call_my_priv_func
ex-linkage.tcl
Running above tcl script in ns-2.26 I got the error
Invalid command name Agent/MyAgentOtcl
While executing
A Agent/MyAgentOtcl create _o3
catch $className create $o $args msg
(procedure new line 3)
invoked from within
new Agent/MyAgentOtcl
invoked from within
set myagent [new Agent/MyAgentOtcl]
(file ex-linkage.tcl line 1)
I apply the following procedure:
Open Makefile, add ex-linkage.o at the end of object file list.
Re-compile NS using the make command.
Run tcl script.
if anyone knows the solutins then immediately mail me...
Mahesh
-
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India
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[ns] Regarding solution of problem in simple programe.
Hi all,
When I run the sample program about C++/Otcl linkage I got the error as
described below:
Program:
class MyAgent : public Agent
{
public:
MyAgent();
protected:
int command(int *argc,const char *const* argv);
private:
int My_var1;
double My_var2;
void MyPrivFun(void);
};
static class MyAgentClass: public TclClass
{
public:
MyAgentClass() : TclClass(Agent/MyAgentOtcl){};
TclObject* create(int, const char*const*)
{
return (new MyAgent());
}
}class_my_agent;
MyAgent : MyAgent() : Agent(PT_UDP)
{
bind(my_var1_otcl, my_var1);
bind(my_var2_otcl, my_var2);
}
int MyAgent::command(int *argc,const char *const* argv)
{
if(argc==2)
{
if(strcmp(argv[1], call_my_priv_func)==0)
{
MyPrivFun();
return(TCL_OK);
}
}
return(Agent : command(argc,argv));
}
void MyAgent :: MyPrivFun(void)
{
Tcl tcl=Tcl::instance();
Tcl.eval(puts \Message from MyPrivFun\);
Tcl.evalf(puts \ my_var1= %d\, my_var1);
Tcl.evalf(puts \ my_var2= %f\, my_var2);
}
ex-linkage.cc
set myagent [new Agent/MyAgentOtcl]
$myagent set my_var1_otcl 2
$myagent set my_var2_otcl 3.14
$myagent call_my_priv_func
ex-linkage.tcl
Running above tcl script in ns-2.26 I got the error
Invalid command name Agent/MyAgentOtcl
While executing
A Agent/MyAgentOtcl create _o3
catch $className create $o $args msg
(procedure new line 3)
invoked from within
new Agent/MyAgentOtcl
invoked from within
set myagent [new Agent/MyAgentOtcl]
(file ex-linkage.tcl line 1)
I apply the following procedure:
Open Makefile, add ex-linkage.o at the end of object file list.
Re-compile NS using the make command.
Run tcl script.
if anyone knows the solutins then immediately mail me...
Mahesh
-
Why was V. Sehwag warned by the BCCI? Share your knowledge on Yahoo! Answers
India
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Re: [ns] UMTS simulation error
Hi there!
This is a known (but not well documented) bug in EURANE.
You have an uneven number of UMTS nodes (1 RNC + 1 BS + 1 UE = 3 nodes)
AND your traffic starts from the fixed node.
2 ways to work around it:
1) set up another dummy UMTS node (eg. another UE which is never used)
2) put the traffic source directly on the RNC as in the EURANE sample
script.
This bug is documented in a footnote in the section on HSDPA of the
EURANE manual, but it *also* affects the DCH, too, not just the HS-DCH.
HTH good luck!
lg,
Martina Umlauft[EMAIL PROTECTED]
-
http://frauenweb.at/~tina
Anoop Ramamurthy schrieb:
Hello ,
I am a new NS user. I have written a tcl script which comprises of
a simple ftp application with tcp (UMTS using eurane) . I am not getting
any syntactical errors in the script but it is runnig for sometime and
giving me this error message.
add-interface: t2: t == 3 (t == nifs_ -1)
simulation is running please wait ...
--- Classfier::no-slot{} default handler (tcl/lib/ns-lib.tcl) ---
_o71: no target for slot -1
_o71 type: Classifier/Hash/Dest
content dump:
classifier _o71
0 offset
0 shift
2147483647 mask
0 slots
-1 default
-- Finished standard no-slot{} default handler --
Can anyone help me to find the mistake which is causing this error ?
the original script which i have written is ...
global ns
# Remove all headers and add only those that are required
# This significantly reduces the memory requirements for large simulations
remove-all-packet-headers
add-packet-header MPEG4 MSC-HS RLS LL Mac RTP TCP IP Common Flags
set ns [new Simulator]
set output [open out.tr w]
$ns trace-all $output
proc finish {} {
global ns
global output
$ns flush-trace
close $output
puts Simulation ended
exit 0
}
# Configure and create rnc
$ns node-config -UmtsNodeType rnc
set rnc [$ns create-Umtsnode]
# Configure and create bs
$ns node-config -UmtsNodeType bs \
-downlinkBW 32kbs \
-downlinkTTI 10ms \
-uplinkBW 32kbs \
-uplinkTTI 10ms \
-hs_downlinkTTI 2ms \
-hs_downlinkBW 64kbs
set bs [$ns create-Umtsnode]
# Define Iub interface between RNC and BS
$ns setup-Iub $bs $rnc 622Mbit 622Mbit 15ms 15ms DummyDropTail 2000
# Configure and create ue
$ns node-config -UmtsNodeType ue \
-baseStation $bs \
-radioNetworkController $rnc
set ue1 [$ns create-Umtsnode]
# Create sgsn and ggsn
set sgsn1 [$ns node]
set ggsn1 [$ns node]
# Create node1 and node 2 ( Fixed nodes )
set node1 [$ns node]
set node2 [$ns node]
# Connections between fixed network nodes
$ns duplex-link $rnc $sgsn1 622Mbit 0.4ms DropTail 1000
$ns duplex-link $sgsn1 $ggsn1 622Mbit 10ms DropTail 1000
$ns duplex-link $ggsn1 $node1 10Mbit 15ms DropTail 1000
$ns duplex-link $node1 $node2 10Mbit 35ms DropTail 1000
# Routing gateway
$rnc add-gateway $sgsn1
Set up the agents and their respective connections
# Agent setup for ue
set tcp0 [new Agent/TCP]
$tcp0 set fid_ 0
$tcp0 set prio_ 2
# Attach agents to a common fixed nodes
$ns attach-agent $node2 $tcp0
# Create and connect two applications to their agent
set ftp0 [new Application/FTP]
$ftp0 attach-agent $tcp0
# Create and attach sinks
set sink0 [new Agent/TCPSink]
$sink0 set fid_ 0
$ns attach-agent $ue1 $sink0
# Connect sinks to TCP agents
$ns connect $tcp0 $sink0
$ns node-config -llType UMTS/RLC/AM \
-downlinkBW 64kbs \
-uplinkBW 64kbs \
-downlinkTTI 20ms \
-uplinkTTI 20ms \
-hs_downlinkTTI 2ms \
-hs_downlinkBW 64kbs
# Create HS-DSCH and attach TCP agent for ue1
$ns create-hsdsch $ue1 $sink0
# Loads input trace file for ue identified by its fid_
$bs setErrorTrace 0 idealtrace
# Load BLER lookup table from SNRBLERMatrix
$bs loadSnrBlerMatrix SNRBLERMatrix
# UE1 tracing
$ue1 trace-inlink $output 2
$ns at 0.0 $ftp0 start
$ns at 10.0 $ftp0 stop
$ns at 10.2 finish
puts simulation is running please wait ...
$ns run
__
[ns] how to get current date ($ns now) in c++?
Dear NS-users I am modifying an extension of ns (RSVP-TE\ns), and at some point I need to have an access to the current date (given in tcl by $ns now). I don't know how to do this. I suppose I could use something like: Tcl tcl = Tcl::instance(); tcl.evalf(%d now, my_simulator_instance); but I don't know how to refer to the simulator instance. I would be very grateful if you could help me on this topic. Mit freundlichen Grüßen, with kind regards, cordialement, -- Gilles BERTRAND Telecom INT (GET) - University of Stuttgart --
Re: [ns] how to get current date ($ns now) in c++?
Well, I am sorry for having bothered your mailboxes. I have finally found the solution: Scheduler::instance().clock() indeed returns the simulated time, as I needed. Mit freundlichen Grüßen, with kind regards, cordialement, -- Gilles BERTRAND Telecom INT (GET) - University of Stuttgart --- 2006/5/17, Gilles Bertrand [EMAIL PROTECTED]: Dear NS-users I am modifying an extension of ns (RSVP-TE\ns), and at some point I need to have an access to the current date (given in tcl by $ns now). I don't know how to do this. I suppose I could use something like: Tcl tcl = Tcl::instance(); tcl.evalf(%d now, my_simulator_instance); but I don't know how to refer to the simulator instance. I would be very grateful if you could help me on this topic. Mit freundlichen Grüßen, with kind regards, cordialement, -- Gilles BERTRAND Telecom INT (GET) - University of Stuttgart ---
Re: [ns] how to get current date ($ns now) in c++?
Hi From C++ use it is better to use: Scheduler::instance().clock() You can also call the Otcl code from C++, but the former will call C++ again. So if you use C++, call C++ functions directly. Here is the Otcl solution Tcl tcl = Tcl::instance(); tcl.evalf([Simulator instance] now); Then analyse tcl.result() Sincerely, Alexander Sayenko (PhD) Assistant Telecommunication laboratory, MIT department University of Jyvaskyla, Finland Dear NS-users I am modifying an extension of ns (RSVP-TE\ns), and at some point I need to have an access to the current date (given in tcl by $ns now). I don't know how to do this. I suppose I could use something like: Tcl tcl = Tcl::instance(); tcl.evalf(%d now, my_simulator_instance); but I don't know how to refer to the simulator instance. I would be very grateful if you could help me on this topic. Mit freundlichen Grüßen, with kind regards, cordialement, -- Gilles BERTRAND Telecom INT (GET) - University of Stuttgart -- -- Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.5.2/329 - Release Date: 02.05.2006
[ns] I NEED HELP IN ORDER TO DEBUG C++ CODE
hi everyone In past message I read that in order to debug I need to do: ++ look for the line : # Build Tcl8.3.2 (should be around line 173) In this section you need to add the option --enable-symbols to the line : ./configure --enable-gcc --disable-shared --prefix=$CUR_PATH || so it becomes: ./configure --enable-gcc --enable-symbols --disable-shared --prefix=$CUR_PATH || Now, still in the ns-allinone/install file, look for the tclcl section. # Build tclcl (should be around line 260) in this section, you need to add --enable-debug to your configure line, such that: ./configure || ... becomes ./configure --enable-debug || ... ok, we're done with this one. save and close. now, go into your ns-allinone/ns directory, and open your Makefile.in. Search for CFLAGS (should be around line 90), and change it from CFLAGS = $(CCOPT) $(DEFINE) to CFLAGS = -g $(CCOPT) $(DEFINE) ++ I did this steps but now my scripts don´t work, what Happend I use Ns-2-29. I read the section in the ns manual for debug but is not clear. If some one know a good guide, and could send me it. I aprecite the help. Ing. Edwin Cruz. Área de Comunicaciones. 50613800 Ext. 6357
[ns] trace format of WPAN(802.15.4)
Dear all: It takes me few days long to search the definition of each field. But so far, I still can not understand the trace format. Please all you! The trace file looks like the following form. r 11.480768033 _5_ MAC --- 0 BCN 12 [0 0 0] s 11.591552000 _0_ MAC --- 14 exp 97 [0 1 0 800] --- [0:0 1:0 30 1] s 11.595072033 _1_ MAC --- 14 ACK 5 [0 0 1 0] r 11.595424067 _0_ MAC --- 14 ACK 5 [0 0 1 0] r 11.596064033 _1_ MAC --- 14 exp 90 [0 1 0 800] --- [0:0 1:0 30 1] - This mail sent through NCTU WebMail System: https://webmail.nctu.edu.tw
[ns] how to start modifying code
hi; i am a beginner in ns2 and i want to modify aodv or dsr protocol code such that i want this protocol to save all possible routes to the destination in a cache for example in a file such that if a link is broken it directly take the other route without doing route discovery how it can be applied in code because it is hard for me in the beginning to start modifying this code thanks a lot for your help _ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
[ns] Routing Tables
Hi , I would like to extract from any node at any time it's current routing table. I'm using DV protocol as also LS . Do you know what command do that? Thanx, Giovane
Re: [ns] query:otcl command explanation?
Well, the terms that you are referring to are standard object oriented programming terms. There are some sites that can offer a relative introduction to what you are asking, but in order to understand in depth these issues, you should read a good object-oriented programming book, or an OTcl manual in specific. However, you can check the following link: http://www.openmash.org/developers/docs/otcl-doc/doc/tutorial.html It has an introduction to OTcl, in somehow more concrete terms. In order to give you a relatively short description of the terms that you mention in your question...: self is used when we need to refer to the SAME object that is invoking the command. Is usually invoked from whithin a method (i.e. a procedure inside a class definition) and it refers (i.e. substitutes) the name of any object that will use this keyword when it will invoke the method that contains it. global is used to refer to the variables that are in global scope. It is usually invoked from within procedures and/or class methods that want to include in their local variable scope some variables from the global scope (i.e. variables that are declared outside any procedures and methods. Variables that are declared in the main body of a tcl script). instproc and instvar refer to the way that we can declare new class methods (instproc, is derived from instance procedure), which will be used by the corresponding objects and instvar (instance-variable) refers to the way we declare class attributes, or in other words, variables that will contain attributes (like integers, strings, arrays, other objects, etc) for every object-instance that belongs to the same class (or any other inherited class). However, as you can see all these are referring to standard object-oriented programming and if you do not have such a background I would suggest (starting from the link above) to read one or two short-course manuals, just to get the hang of it. Hope that I have helped you. Kind Regards, -Fk On 5/16/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: -- Forwarded message -- From: balraj karthikeyan [EMAIL PROTECTED] To: ns-users@ISI.EDU Date: Tue, 16 May 2006 12:36:21 +0930 Subject: [ns] query:otcl command explanation? hi I am trying to understand the meaning of commands we use in otcl programming like; what is self? what is global? why we use instproc,instvar and someone plz help me by giving a good link other then otcl tutorial and manual Cheers, Cartic -- Filippos N Kolovos Software Systems Analyst Engineer M.Sc. (Eng.) in Data Communications Automation Networking Department University of Macedonia Library Egnatia 156, P.O.Box 1591 540 06 Thessaloniki, Greece E-Mail: [EMAIL PROTECTED], [EMAIL PROTECTED] --
[ns] Multipath classifier and port classifier
Hello, I am trying to understand the structure of the classifier when the multipath classifier is used. From the manual, I understand that the main classifier points to the multipath classifier instead of the link, and the classify() function of the multipath classifier is invoked when Classifier::classify() is invoked. So, I think the structure looks something like this Main classifier - Multipath Classifier | v Port Classifier That is, the main classifier points to both the port and multipath classifiers. However, I cannot indentify the reference to the port classifier or the dmux table in the classifier code. I need to understand how the packets at the destination are sent up to the agent by the classifier. When is the PortClassifier::classify() invoked and at what point is the decision made to send the packet up to the agent? I need to modify the classifier so that some packets are sent to the agent even when they are not destined for that agent. Thanks in advance for any pointers. -- Shruti Gorappa Distributed Object Computing Laboratory 608 Engineering Tower University of California, Irvine [EMAIL PROTECTED] http://doc.ece.uci.edu/~shruti (949) 824-7548
[ns] wirelessphy in aodv
Hello: 1) I need use the WirelessPhy object (for receive threshold) in routing layer, How can I get a reference to them (such as in AODV or DSR)? For example, in DSR, it use install-tap to connect mac_ in DSR with the MAC object in tcl in DSRagent::command, however, when I check the ns-mobile.tcl, I can not find the way for netif or channel object, Could you pls. give me some help? 2) I need the rms value of the channel, how can I implement it? _ 享用世界上最大的电子邮件系统― MSN Hotmail。 http://www.hotmail.com
