[ns] unicast problem

[Sencun Zhu <szhu1@ise.gmu.edu>]

On Thu, 1 Feb 2001, Sencun Zhu wrote:

 
 Hi, all, I need to investigate the following simulation:
 
 1:  use unicast once to send a relative big packet(say 10kbyte)
 &
 2:  use multiple unicasts with each packet small ( say 1 kbyte 10 times).
 
 we know the second approach is worse because of overhead from
 transmission.
 
 I wonder how to use ns to evaluate it. if I want to compare these on
 bandwidth use , I might have to know every packet size in physical layer,
 (so I have to access the physical layer in ns to get the size? )
 or if I want to know the cost(resource use) for routers, which may be more
 complex.  
   Is there any previous work or result aggarding to this problem?
   any suggestion will be appreciated!   
 
 
 
 Sencun