[ns] link Capacity

[Meow Chiow Chia <meowchiowc@yahoo.com>]

Hi H�kan 
  Thanks for your advice.  Even through if I just
calculated for one way traffic, the link throughput
still exceeded the expected value.  I am wondering if
I miss out something !  

Best regards
Meow

----------
> From: 	H> �kan
Bystr�m[SMTP:hakan.bystrom@operax.com]
> Sent: 	Wednesday, November 28, 2001 11:55 AM
> To: 	Meow Chiow Chia
> Cc: 	ns-users@ISI.EDU
> Subject: 	Re: [ns] Link Capacity
> 
> >  <<flowcalc.awk>> 
> Meow Chiow Chia wrote: 
> 
> The resulted xgraph showed that the maximum link 
> throughput is actually bigger than 10000bits/sec. I
am 
> wondering why it would happen ?
> 
> I guess you're measuring traffic going in both
directions of the 
duplex link. This gives a maximum throughput of
20kbit/s. Otherwise try 
using my awk script which I've attached to this mail.
Run it on a trace of 
the link you like to perform the measurements on, i.e.
not a trace-all 
file: 
> 
> $ns trace-queue $node0 $node1 $trace_file 
> 
> I am wondering what 
> are the reason of the dropping packets , is that due

> to buffer memory overflow and/or link capacity has 
> been exceeded ?
> 
> Yes, both. This is however basic computer
communications knowledge 
and not a question about ns. 
> 
> Kindly 
> H�kan 
> -- 
> H�kan Bystr�m, Operax
> +46 920 755 07, office
> +46 70 374 03 24, cellular
>  
> 


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