[ns] RED queue

[#LIM XIAOWEI#]

Hi!
 
Without an error model, would there still be dropping of packets
 
my RED parameters are set as
minth threshold 5
max threshold 15
q_weight 0.002
maxp 0.1
markp 0.5
 
Thanks!
zoe

[ns] Buffer Size

[#LIM XIAOWEI#]

Hi!
 
how do you find the buffer size for the router when we implement RED?
The problem we have right now is the router refuse to drop any packets no 
matter how we define the link.
 
Pls help!
 
Thanks
zoe

[ns] PHB entry in DiffServ

[#LIM XIAOWEI#]

hi!

Some queries i would like to clarify;

How do we define PHB entry values? How do we define code points?

In the use of  

$dsredq setSchedulerMode Pri

$dsredq addQueueWeights 1 5, how do we define the value 1  5 ?

thanks!

zoe

[ns] Trace Files

[#LIM XIAOWEI#]

Hi!
 
I'm currently running a video trace through NS simulation, with the aim of 
getting an output trace at the end. 
However, it hasn't been successful.
1) What codes should i add to my tcl script to produce output trace file?
 
2) Should my input trace file be of a certain format? How do i attain that 
trace file?
 
Thanks!
 
Zoe
 
 

[ns] Trace files

[#LIM XIAOWEI#]

Hi!
 
Would like to ask, how do you generate a trace file from a raw video such that 
it is in a format that is recognized by NS-2?
Thanks!
Zoe

[ns] Trace Graph convertor

[#LIM XIAOWEI#]

Hi!
 
I'm currently using trace convertor and trace graph. I can't seem to use 
trconvert.exe to convert my trace file into one that suits the trace graph. 
 
When i type Eg trconvert foreman, it doesn't recognise my trace format.
 
FYI, my trace format is in this form,
 
1.122066 id 0 lost  

1.122066 id 1 udp 3036 

1.363516 id 2 lost  

1.363516 id 3 lost  

1.363516 id 4 udp 3183 

1.389316 id 5 udp 516 

1.417616 id 6 udp 566 

1.597466 id 7 udp 3321 

1.627916 id 8 udp 609 

1.651466 id 9 udp 471 

Pls Enlighten me! thanks!

[ns] Integrating Error Models

[#LIM XIAOWEI#]

Hi!
 
Would like to ask, how do you integrate error models into the simulation? 
Eg MArkov model and random error models.
 
Thanks!
 
 

[ns] Implementation of queue mechanisms

[#LIM XIAOWEI#]

Hi!
 
I'm having problems with integrating new queing mechanisms into NS-2. After 
installing the patch files required, the response is segmentation error. Is 
there something that i should do or add on to?
 
Another question that i have is, everytime we introduce something new to NS-2, 
do i need to install patch files? 
Thank you!
Regards,
 zoe
 
 

[ns] Patch Files

[#LIM XIAOWEI#]

Hi!
 
How do i create my own patch files for the changes i'm going to make in NS-2? 
Are patch files necessary?
 
Thanks!

[ns] Difference between red.cc and queue.cc

[#LIM XIAOWEI#]

Hi!

 

There is a question that we would like to seek your expertise on and that is 
the queue control. We understand and have found the queue control files 
available in NS-2 such as RED.CC, FAIR QUEUING.CC...and QUEUE.CC . 

However, there are certain areas that we don't quite understand.

1) What is the difference between queue.cc and red.cc since they are both 
queing methods?( We understand that RED is part of QUEUE hierarchy)

 

2) How do we integrate red.cc into the network we are simulating? Do we save it 
as a queue.cc file before compiling?

 

   Looking forward to your reply=)

 

   Regards,

   Zoe